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A Targeted Search for Variable Gravitationally Lensed Quasars Astrophys. J. (IF 4.8) Pub Date : 2024-09-18 William Sheu, Xiaosheng Huang, Aleksandar Cikota, Nao Suzuki, Antonella Palmese, David J. Schlegel and Christopher Storfer
We present a pipeline to identify photometric variability within strong gravitationally lensing candidates, in the Dark Energy Spectroscopic Instrument Legacy Imaging Surveys. In our first paper, we laid out our pipeline and presented seven new gravitationally lensed supernovae candidates in a retrospective search. In this companion paper, we apply a modified version of that pipeline to search for
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The Environments of Fast Radio Bursts Viewed Using Adaptive Optics Astrophys. J. (IF 4.8) Pub Date : 2024-09-18 Michele N. Woodland, Alexandra G. Mannings, J. Xavier Prochaska, Stuart D. Ryder, Lachlan Marnoch, Regina A. Jorgenson, Sunil Simha, Nicolas Tejos, Alexa Gordon, Wen-fai Fong, Charles D. Kilpatrick, Adam T. Deller and Marcin Glowacki
We present observations from the Gemini Multi-Conjugate Adaptive Optics System/Gemini South Adaptive Optics Imager at Gemini South of five fast radio burst (FRB) host galaxies of FRBs with subarcsecond localizations. We examine and quantify the spatial distributions and locations of the FRBs with respect to their host galaxy light distributions, finding a median host-normalized offset of 2.09 half-light
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Examining the Nature of the Starless Dark Matter Halo Candidate Cloud-9 with Very Large Array Observations Astrophys. J. (IF 4.8) Pub Date : 2024-09-18 Alejandro Benítez-Llambay, Rajeshwari Dutta, Michele Fumagalli and Julio F. Navarro
Observations with the Five-hundred-meter Aperture Spherical Telescope recently detected H i 21 cm emission near M94, revealing an intriguing object, Cloud-9, without an optical counterpart. Subsequent analysis suggests that Cloud-9 is consistent with a gas-rich (MH I ≈ 106M⊙), starless, dark matter (DM) halo of mass M200 ≈ 5 × 109M⊙. Using the Karl G. Jansky Very Large Array in D-array configuration
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A Tale of Two Molecules: The Underprediction of CO2 and Overprediction of PH3 in Late T and Y Dwarf Atmospheric Models Astrophys. J. (IF 4.8) Pub Date : 2024-09-18 Samuel A. Beiler, Sagnick Mukherjee, Michael C. Cushing, J. Davy Kirkpatrick, Adam C. Schneider, Harshil Kothari, Mark S. Marley and Channon Visscher
The sensitivity and spectral coverage of JWST are enabling us to test our assumptions of ultracool dwarf atmospheric chemistry, especially with regards to the abundances of phosphine (PH3) and carbon dioxide (CO2). In this paper, we use Near Infrared Spectrograph PRISM spectra (∼0.8−5.5 μm, R ∼ 100) of four late T and Y dwarfs to show that standard substellar atmosphere models have difficulty replicating
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Phase-resolved Spectroscopy of Low-frequency Quasiperiodic Oscillations from the Newly Discovered Black Hole X-Ray Binary Swift J1727.8-1613 Astrophys. J. (IF 4.8) Pub Date : 2024-09-18 Qing-Cang Shui, Shu Zhang, Jing-Qiang Peng, Shuang-Nan Zhang, Yu-Peng Chen, Long Ji, Ling-Da Kong, Hua Feng, Zhuo-Li Yu, Peng-Ju Wang, Zhi Chang, Hong-Xing Yin, Jin-Lu Qu, Lian Tao, Ming-Yu Ge, Liang Zhang and Jian Li
Low-frequency quasiperiodic oscillations (LFQPOs) are commonly observed in X-ray light curves of black hole X-ray binaries (BHXRBs); however, their origin remains a topic of debate. In order to thoroughly investigate variations in spectral properties on the quasiperiodic oscillation (QPO) timescale, we utilized the Hilbert–Huang transform technique to conduct phase-resolved spectroscopy across a broad
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Shocking and Mass Loss of Compact Donor Stars in Type Ia Supernovae Astrophys. J. (IF 4.8) Pub Date : 2024-09-18 Tin Long Sunny Wong, Christopher J. White and Lars Bildsten
Type Ia supernovae arise from thermonuclear explosions of white dwarfs accreting from a binary companion. Following the explosion, the surviving donor star leaves at roughly its orbital velocity. The discovery of the runaway helium subdwarf star US 708, and seven hypervelocity stars from Gaia data, all with spatial velocities ≳900 km s−1, strongly support a scenario in which the donor is a low-mass
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Imprints of the Local Bubble and Dust Complexity on Polarized Dust Emission Astrophys. J. (IF 4.8) Pub Date : 2024-09-17 George Halal, S. E. Clark and Mehrnoosh Tahani
Using 3D dust maps and Planck polarized dust emission data, we investigate the influence of the 3D geometry of the nearby interstellar medium (ISM) on the statistics of the dust polarization on large ( ) scales. We test recent models that assume that the magnetic field probed by the polarized dust emission is preferentially tangential to the Local Bubble wall, but we do not find an imprint of the Local
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Three Types of Solar Coronal Rain during Magnetic Reconnection between Open and Closed Magnetic Structures Astrophys. J. (IF 4.8) Pub Date : 2024-09-17 Fangfang Qiao, Leping Li, Hui Tian, Zhenyong Hou, Hongqiang Song, Kaifan Ji and Zheng Sun
Coronal rain (CR) is a crucial part of the mass cycle between the corona and chromosphere. It includes flare-driven CR and two types of quiescent CR, along nonflaring active region closed loops and along open structures, separately, labeled as type I, type II, and type III CR, respectively. Among them, type I and type III CR are generally associated with magnetic reconnection. In this study, employing
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CMB-PAInT: An inpainting tool for the cosmic microwave background J. Cosmol. Astropart. Phys. (IF 5.3) Pub Date : 2024-09-18 C. Gimeno-Amo, E. Martínez-González and R.B. Barreiro
The presence of astrophysical emissions in microwave observations forces us to perform component separation to extract the Cosmic Microwave Background (CMB) signal. However, even in the most optimistic cases, there are still strongly contaminated regions, such as the Galactic plane or those with emission from extragalactic point sources, which require the use of a mask. Since many CMB analyses, especially
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Constraining Post-Newtonian Parameters with the Cosmic Microwave Background J. Cosmol. Astropart. Phys. (IF 5.3) Pub Date : 2024-09-18 Daniel B. Thomas, Theodore Anton, Timothy Clifton and Philip Bull
The Parameterised Post-Newtonian (PPN) approach is the default framework for performing precision tests of gravity in nearby astrophysical systems. In recent works we have extended this approach for cosmological applications, and in this paper we use observations of the anisotropies in the Cosmic Microwave Background to constrain the time variation of the PPN parameters α and γ between last scattering
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Impossibility of rips and cosmological singularities in a universe merging with baby universes J. Cosmol. Astropart. Phys. (IF 5.3) Pub Date : 2024-09-18 Oem Trivedi and Maxim Khlopov
Understanding the late-time acceleration of the universe and its subtleties is one of the biggest mysteries in cosmology. A lot of different approaches have been put forward to deal with this, ranging from the conventional cosmological constant to various models of dark energy and beyond. Recently one very interesting approach to explaining the late time acceleration has been put forward, where the
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Towards unbiased recovery of cosmic filament properties: the role of spine curvature and optimized smoothing J. Cosmol. Astropart. Phys. (IF 5.3) Pub Date : 2024-09-18 Saee Dhawalikar and Aseem Paranjape
Cosmic filaments, the most prominent features of the cosmic web, possibly hold untapped potential for cosmological inference. While it is natural to expect the structure of filaments to show universality similar to that seen in dark matter halos, the lack of agreement between different filament finders on what constitutes a filament has hampered progress on this topic. We initiate a programme to systematically
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Results of the follow-up of ANTARES neutrino alerts J. Cosmol. Astropart. Phys. (IF 5.3) Pub Date : 2024-09-18 A. Albert, S. Alves, M. André, M. Ardid, S. Ardid, J.-J. Aubert, J. Aublin, B. Baret, S. Basa, Y. Becherini, B. Belhorma, M. Bendahman, F. Benfenati, V. Bertin, S. Biagi, M. Bissinger, J. Boumaaza, M. Bouta, M.C. Bouwhuis, H. Brânzaş, R. Bruijn, J. Brunner, J. Busto, B. Caiffi, D. Calvo, S. Campion, A. Capone, L. Caramete, F. Carenini, J. Carr, V. Carretero, S. Celli, L. Cerisy, M. Chabab, R. Cherkaoui
High-energy neutrinos could be produced in the interaction of charged cosmic rays with matter or radiation surrounding astrophysical sources. To look for transient sources associated with neutrino emission, a follow-up program of neutrino alerts has been operating within the ANTARES collaboration since 2009. This program, named TAToO, has triggered robotic optical telescopes (MASTER, TAROT, ROTSE and
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Observational features of reflection asymmetric black holes J. Cosmol. Astropart. Phys. (IF 5.3) Pub Date : 2024-09-18 Che-Yu Chen and Hung-Yi Pu
The Kerr spacetime is symmetric with respect to a well-defined equatorial plane. When testing the equatorial reflection symmetry of an isolated black hole, one is at the same time testing the Kerr hypothesis in General Relativity. In this work, we investigate the possible observational features when a Keplerian disk is surrounding a rotating black hole without reflection symmetry. When such symmetry
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Accurate power spectrum estimation toward Nyquist limit J. Cosmol. Astropart. Phys. (IF 5.3) Pub Date : 2024-09-18 Yipeng Wang and Yu Yu
The power spectrum, as a statistic in Fourier space, is commonly numerically calculated using the fast Fourier transform method to efficiently reduce the computational costs. To alleviate the systematic bias known as aliasing due to the insufficient sampling, the interlacing technique was proposed. We derive the analytical form of the shot noise under the interlacing technique, which enables the exact
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The glow of axion quark nugget dark matter. Part I. Large scale structures J. Cosmol. Astropart. Phys. (IF 5.3) Pub Date : 2024-09-18 Fereshteh Majidi, Xunyu Liang, Ludovic Van Waerbeke, Ariel Zhitnitsky, Michael Sekatchev, Julian S. Sommer, Klaus Dolag and Tiago Castro
Axion quark nuggets (AQN) are hypothetical, macroscopically large objects with a mass greater than a few grams and sub-micrometer size, formed during the quark-hadron transition. Originating from the axion field, they offer a possible resolution of the similarity between visible and dark components of the Universe, i.e. ΩDM ∼ Ωvisible and observed matter-antimatter asymmetry. These composite objects
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Critical analysis of replacing dark matter and dark energy with a model of stochastic spacetime J. Cosmol. Astropart. Phys. (IF 5.3) Pub Date : 2024-09-18 Mark P. Hertzberg and Abraham Loeb
We analyze consequences of trying to replace dark matter and dark energy with models of stochastic spacetime. In particular, we analyze the model put forth by ref. [1], in which it is claimed that “post-quantum classical gravity” (PQCG), a stochastic theory of gravity, leads to modified Newtonian dynamics (MOND) behavior on galactic scales that reproduces galactic rotation curves, and leads to dark
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Revisiting evolution of domain walls and their gravitational radiation with CosmoLattice J. Cosmol. Astropart. Phys. (IF 5.3) Pub Date : 2024-09-18 I. Dankovsky, E. Babichev, D. Gorbunov, S. Ramazanov and A. Vikman
Employing the publicly available 𝒞osmoℒattice code, we conduct numerical simulations of a domain wall network and the resulting gravitational waves (GWs) in a radiation-dominated Universe in the Z2-symmetric scalar field model. In particular, the domain wall evolution is investigated in detail both before and after reaching the scaling regime, using the combination of numerical and theoretical methods
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The MIRI Exoplanets Orbiting White dwarfs (MEOW) Survey: Mid-infrared Excess Reveals a Giant Planet Candidate around a Nearby White Dwarf Astrophys. J. Lett. (IF 8.8) Pub Date : 2024-09-18 Mary Anne Limbach, Andrew Vanderburg, Alexander Venner, Simon Blouin, Kevin B. Stevenson, Ryan J. MacDonald, Sydney Jenkins, Rachel Bowens-Rubin, Melinda Soares-Furtado, Caroline Morley, Markus Janson, John Debes, Siyi Xu, Evangelia Kleisioti, Matthew Kenworthy, Paul Butler, Jeffrey D. Crane, Dave Osip, Stephen Shectman and Johanna Teske
The MIRI Exoplanets Orbiting White dwarfs survey is a cycle 2 JWST program to search for exoplanets around dozens of nearby white dwarfs via infrared excess and direct imaging. In this Letter, we present the detection of mid-infrared excess at 18 and 21 μm toward the bright (V = 11.4) metal-polluted white dwarf WD 0310–688. The source of the IR excess is almost certainly within the system; the probability
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Reconciling M/L Ratios Across Cosmic Time: a Concordance IMF for Massive Galaxies Astrophys. J. Lett. (IF 8.8) Pub Date : 2024-09-18 Pieter van Dokkum and Charlie Conroy
The stellar initial mass function (IMF) is thought to be bottom heavy in the cores of the most massive galaxies, with an excess of low-mass stars compared to the Milky Way. However, studies of the kinematics of quiescent galaxies at 2 < z < 5 find M/L ratios that indicate lighter IMFs. Light IMFs have also been proposed for the unexpected populations of luminous galaxies that JWST has uncovered at
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Analyzing the Sequence of Phases Leading to the Formation of the Active Region 13664, with Potential Carrington-like Characteristics Astrophys. J. Lett. (IF 8.8) Pub Date : 2024-09-18 P. Romano, A. Elmhamdi, A. Marassi and and L. Contarino
Several recurrent X-class flares from Active Region (AR) 13664 triggered a severe G5-class geomagnetic storm between 2024 May 10 and 11. The morphology and compactness of this AR closely resemble the AR responsible for the famous Carrington Event of 1859. Although the induced geomagnetic currents produced a value of the Dst index, probably 1 order of magnitude weaker than that of the Carrington Event
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The Formation of Milky Way “Bones”: Ubiquitous HI Narrow Self-absorption Associated with CO Emission Astrophys. J. Lett. (IF 8.8) Pub Date : 2024-09-18 Shenglan Sun, Ke Wang, Xunchuan Liu and Fengwei Xu
Long and skinny molecular filaments running along Galactic spiral arms are known as “bones,” since they make up the skeleton of the Milky Way. However, their origin is still an open question. Here, we compare spectral images of HI taken by the Five-hundred-meter Aperture Spherical radio Telescope (FAST) with archival CO and Herschel dust emission to investigate the conversion from HI to H2 in two typical
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TESS Investigation—Demographics of Young Exoplanets (TI-DYE). II. A Second Giant Planet in the 17 Myr System HIP 67522 Astrophys. J. Lett. (IF 8.8) Pub Date : 2024-09-18 Madyson G. Barber, Pa Chia Thao, Andrew W. Mann, Andrew Vanderburg, Mayuko Mori, John H. Livingston, Akihiko Fukui, Norio Narita, Adam L. Kraus, Benjamin M. Tofflemire, Elisabeth R. Newton, Joshua N. Winn, Jon M. Jenkins, Sara Seager, Karen A. Collins and Joseph D. Twicken
The youngest (<50 Myr) planets are vital to understand planet formation and early evolution. The 17 Myr system HIP 67522 is already known to host a giant (≃10R⊕) planet on a tight orbit. In their discovery paper, Rizzuto et al. reported a tentative single-transit detection of an additional planet in the system using TESS. Here, we report the discovery of HIP 67522c, a 7.9 R⊕ planet that matches with
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On the Kinematic Nature of Apparent Disks at High Redshifts: Local Counterparts are Not Dominated by Ordered Rotation but by Tangentially Anisotropic Random Motion Astrophys. J. Lett. (IF 8.8) Pub Date : 2024-09-17 Bitao Wang, Yingjie Peng, Michele Cappellari, Hua Gao and Houjun Mo
It is not straightforward to physically interpret the apparent morphology of galaxies. Recent observations by the James Webb Space Telescope (JWST) revealed a dominant galaxy population at high redshifts (z > 2) that were visually classified as disks for their flattened shapes and/or exponential light profiles. The extensively accepted interpretation is that they are dynamically cold disks supported
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Cavitating Bubbles in Condensing Gas as a Means of Forming Clumps, Chondrites, and Planetesimals Astrophys. J. Lett. (IF 8.8) Pub Date : 2024-09-17 E. Chiang
Vaporized metal, silicates, and ices on the verge of recondensing into solid or liquid particles appear in many contexts: behind shocks, in impact ejecta, and within the atmospheres and outflows of stars, disks, planets, and minor bodies. We speculate that a condensing gas might fragment, forming overdensities within relative voids, from a radiation–condensation instability. Seeded with small thermal
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Single-star Warm-Jupiter Systems Tend to Be Aligned, Even around Hot Stellar Hosts: No T eff–λ Dependency* Astrophys. J. Lett. (IF 8.8) Pub Date : 2024-09-16 Xian-Yu Wang, Malena Rice, Songhu Wang, Shubham Kanodia, Fei Dai, Sarah E. Logsdon, Heidi Schweiker, Johanna K. Teske, R. Paul Butler, Jeffrey D. Crane, Stephen Shectman, Samuel N. Quinn, Veselin Kostov, Hugh P. Osborn, Robert F. Goeke, Jason D. Eastman, Avi Shporer, David Rapetti, Karen A. Collins, Cristilyn N. Watkins, Howard M. Relles, George R. Ricker, Sara Seager, Joshua N. Winn and Jon M. Jenkins
The stellar obliquity distribution of warm-Jupiter systems is crucial for constraining the dynamical history of Jovian exoplanets, as the warm Jupiters’ tidal detachment likely preserves their primordial obliquity. However, the sample size of warm-Jupiter systems with measured stellar obliquities has historically been limited compared to that of hot Jupiters, particularly in hot-star systems. In this
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Bright unintended electromagnetic radiation from second-generation Starlink satellites Astron. Astrophys. (IF 5.4) Pub Date : 2024-09-18 C. G. Bassa, F. Di Vruno, B. Winkel, G. I. G. Józsa, M. A. Brentjens, X. Zhang
We report on the detection of unintended electromagnetic radiation (UEMR) from the second-generation of Starlink satellites. Observations with the LOFAR radio telescope between 10 to 88 MHz and 110 to 188 MHz show broadband emission covering the frequency ranges from 40 to 70 MHz and 110 to 188 MHz from the v2-Mini and v2-Mini Direct-to-Cell Starlink satellites. The spectral power flux density of this
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Detection prospects of very and ultra high-energy gamma rays from extended sources with ASTRI, CTA, and LHAASO Astron. Astrophys. (IF 5.4) Pub Date : 2024-09-18 S. Celli, G. Peron
Context. The recent discovery of several ultra high-energy gamma-ray emitters in our Galaxy represents a significant advancement towards the characterisation of its most powerful accelerators. Nonetheless, in order to unambiguously locate the regions where the highest energy particles are produced and understand the responsible physical mechanisms, detailed spectral and morphological studies are required
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Magnetic helicity and energy budgets of jet events from an emerging solar active region Astron. Astrophys. (IF 5.4) Pub Date : 2024-09-18 A. Nindos, S. Patsourakos, K. Moraitis, V. Archontis, E. Liokati, M. K. Georgoulis, A. A. Norton
Using photospheric vector magnetograms obtained by the Helioseismic and Magnetic Imager onboard the Solar Dynamics Observatory and a magnetic connectivity-based method, we computed the magnetic helicity and free magnetic energy budgets of a simple bipolar solar active region (AR) during its magnetic flux-emergence phase, which lasted ∼47 h. The AR did not produce any coronal mass ejections (CMEs) or
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PSR B0943+10: Mode Switch, Polar Cap Geometry, and Orthogonally Polarized Radiation Astrophys. J. (IF 4.8) Pub Date : 2024-09-17 Shunshun Cao, Jinchen Jiang, Jaroslaw Dyks, Longfei Hao, Kejia Lee, Zhixuan Li, Jiguang Lu, Zhichen Pan, Weiyang Wang, Zhengli Wang, Jiangwei Xu, Heng Xu and Renxin Xu
As one of the paradigm examples to probe into pulsar magnetospheric dynamics, PSR B0943+10 (J0946+0951) manifests representatively, showing a mode switch, orthogonal polarization, and subpulse drifting, frequently studied below 600 MHz. Here, both integrated and single pulses are studied at a high frequency (1.25 GHz) with FAST. The mode switch is studied using a profile decomposition method. A phase
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Galactic Chemical Evolution Models Favor an Extended Type Ia Supernova Delay-time Distribution Astrophys. J. (IF 4.8) Pub Date : 2024-09-17 Liam O. Dubay, Jennifer A. Johnson and James W. Johnson
Type Ia supernovae (SNe Ia) produce most of the Fe-peak elements in the Universe and therefore are a crucial ingredient in galactic chemical evolution models. SNe Ia do not explode immediately after star formation, and the delay-time distribution (DTD) has not been definitively determined by supernova surveys or theoretical models. Because the DTD also affects the relationship among age, [Fe/H], and
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Binary Mergers in the Centers of Galaxies: Synergy between Stellar Flybys and Tidal Fields Astrophys. J. (IF 4.8) Pub Date : 2024-09-17 Mila Winter-Granic, Cristobal Petrovich, Valentın Peña-Donaire and Chris Hamilton
Galactic centers (GCs) are very dynamically active environments, often harboring a nuclear star cluster and supermassive black hole at their cores. Binaries in these environments are subject to strong tidal fields that can efficiently torque its orbit, exciting near-unity eccentricities that ultimately lead to their merger. In turn, frequent close interactions with passing stars impulsively perturb
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Massive Quiescent Disk Galaxies at 0.5 ≤ z ≤ 1 in CANDELS: Color Gradients and Likely Origin Astrophys. J. (IF 4.8) Pub Date : 2024-09-17 Qifan Cui, Pinsong Zhao and F. S. Liu
A rare population of massive disk-dominated quiescent galaxies has recently drawn much attention, which intrudes the red sequence (RS) population without destroying the underlying stellar disks. In this study, we have carefully identified 48 RS, disk-dominated galaxies with M* > 1010M⊙ between redshift 0.5 and 1.0 in all five CANDELS fields. These galaxies are well fitted by a two-component bulge plus
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Flux Rope Modeling of the 2022 September 5 Coronal Mass Ejection Observed by Parker Solar Probe and Solar Orbiter from 0.07 to 0.69 au Astrophys. J. (IF 4.8) Pub Date : 2024-09-17 Emma E. Davies, Hannah T. Rüdisser, Ute V. Amerstorfer, Christian Möstl, Maike Bauer, Eva Weiler, Tanja Amerstorfer, Satabdwa Majumdar, Phillip Hess, Andreas J. Weiss, Martin A. Reiss, Lucie M. Green, David M. Long, Teresa Nieves-Chinchilla, Domenico Trotta, Timothy S. Horbury, Helen O’Brien, Edward Fauchon-Jones, Jean Morris, Christopher J. Owen, Stuart D. Bale and Justin C. Kasper
As both Parker Solar Probe (PSP) and Solar Orbiter (SolO) reach heliocentric distances closer to the Sun, they present an exciting opportunity to study the structure of coronal mass ejections (CMEs) in the inner heliosphere. We present an analysis of the global flux rope structure of the 2022 September 5 CME event that impacted PSP at a heliocentric distance of only 0.07 au and SolO at 0.69 au. We
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Nonparametric Statistics on Magnetic Properties at the Footpoints of Erupting Magnetic Flux Ropes Astrophys. J. (IF 4.8) Pub Date : 2024-09-17 Rui Liu and Wensi Wang
It is under debate whether the magnetic field in the solar atmosphere carries neutralized electric currents, in particular, whether a magnetic flux rope (MFR), which is considered the core structure of coronal mass ejections, carries neutralized electric currents. Recently Wang et al. (2023) studied magnetic flux and electric current measured at the footpoints of 28 eruptive MFRs from 2010 to 2015
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Fast likelihood-free reconstruction of gravitational wave backgrounds J. Cosmol. Astropart. Phys. (IF 5.3) Pub Date : 2024-09-17 Androniki Dimitriou, Daniel G. Figueroa and Bryan Zaldívar
We apply state-of-the-art, likelihood-free statistical inference (machine-learning-based) techniques for reconstructing the spectral shape of a gravitational wave background (GWB). We focus on the reconstruction of an arbitrarily shaped signal (approximated by a piecewise power-law in many frequency bins) by the LISA detector, but the method can be easily extended to either template-dependent signals
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Neutrino halo profiles: HR-DEMNUni simulation analysis J. Cosmol. Astropart. Phys. (IF 5.3) Pub Date : 2024-09-17 Beatriz Hernández-Molinero, Carmelita Carbone, Raul Jimenez and Carlos Peña Garay
Using the high-resolution HR-DEMNUni simulations, we computed neutrino profiles within virialized dark matter haloes. These new high-resolution simulations allowed us to revisit fitting formulas proposed in the literature and provided updated fitting parameters that extend to less massive haloes and lower neutrino masses than previously in the literature, in accordance with new cosmological limits
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Cosmology with persistent homology: a Fisher forecast J. Cosmol. Astropart. Phys. (IF 5.3) Pub Date : 2024-09-17 Jacky H.T. Yip, Matteo Biagetti, Alex Cole, Karthik Viswanathan and Gary Shiu
Persistent homology naturally addresses the multi-scale topological characteristics of the large-scale structure as a distribution of clusters, loops, and voids. We apply this tool to the dark matter halo catalogs from the Quijote simulations, and build a summary statistic for comparison with the joint power spectrum and bispectrum statistic regarding their information content on cosmological parameters
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Radiating particles accelerated by a weakly charged Schwarzschild black hole J. Cosmol. Astropart. Phys. (IF 5.3) Pub Date : 2024-09-17 Bakhtinur Juraev, Zdeněk Stuchlík, Arman Tursunov and Martin Kološ
It is well known that supermassive black holes in the centers of galaxies are capable of accelerating charged particles to very high energies. In many cases, the particle acceleration by black holes occurs electromagnetically through an electric field induced by the source. In such scenarios, the accelerated particles radiate electromagnetic waves, leading to the appearance of the backreaction force
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The impact of constrained interacting dark energy on the bound-zone velocity profile J. Cosmol. Astropart. Phys. (IF 5.3) Pub Date : 2024-09-17 Jounghun Lee and Marco Baldi
We numerically study the effects of constrained interacting dark energy (CIDER) on the bound-zone velocity profiles around massive dark matter halos. Analyzing the CIDER simulations performed by ref. [1] for three different cases of dark sector coupling (β = 0.03, 0.05 and 0.08) as well as for the standard ΛCDM cosmology (β = 0), we determine the mean peculiar velocity profiles in the bound zones around
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A power spectrum approach to the search for axion-like particles from resolved galaxy clusters using CMB as a backlight J. Cosmol. Astropart. Phys. (IF 5.3) Pub Date : 2024-09-17 Harsh Mehta and Suvodip Mukherjee
Axions or axion-like particles (ALPs) are hypothetical particles predicted by beyond standard model theories, which make one of the dark matter candidates. These particles can convert into photons and vice-versa in the presence of a magnetic field, with a probability decided by its coupling strength gaγ. One of the ways to detect these particles is by using the Cosmic Microwave Background (CMB) as
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The H i Reservoir in Central Spiral Galaxies and the Implied Star Formation Process ∗ Astrophys. J. Lett. (IF 8.8) Pub Date : 2024-09-16 Jing Dou, Yingjie Peng, Qiusheng Gu, Alvio Renzini, Luis C. Ho, Filippo Mannucci, Emanuele Daddi, Chengpeng Zhang, Jiaxuan Li, Yong Shi, Tao Wang, Dingyi Zhao, Cheqiu Lyu, Di Li, Feng Yuan, Roberto Maiolino and Yulong Gao
The cold interstellar medium (ISM) as the raw material for star formation is critical to understanding galaxy evolution. It is generally understood that galaxies stop making stars when, in one way or another, they run out of gas. However, here we provide evidence that central spiral galaxies remain rich in atomic gas even if their star formation rate (SFR) and molecular gas fraction have dropped significantly
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Magnetically Arrested Circumbinary Accretion Flows Astrophys. J. Lett. (IF 8.8) Pub Date : 2024-09-16 Elias R. Most, Hai-Yang Wang and 海洋 王
Binary systems with comparable masses and a surrounding accretion disk can accrete gas through spiral accretion streams penetrating the central cavity formed by tidal interactions. Using three-dimensional Newtonian magnetohydrodynamics simulations, we investigate the possibility of a magnetically arrested accretion flow through the cavity. Rather than solely continuously feeding the binary through
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Climate Bistability at the Inner Edge of the Habitable Zone due to Runaway Greenhouse and Cloud Feedbacks Astrophys. J. Lett. (IF 8.8) Pub Date : 2024-09-16 Bowen Fan, Da Yang and Dorian S. Abbot
Understanding the climate dynamics at the inner edge of the habitable zone is crucial for predicting the habitability of rocky exoplanets. Previous studies using global climate models (GCMs) have indicated that planets receiving high stellar flux can exhibit climate bifurcations, leading to bistability between a cold (temperate) and a hot (runaway) climate. However, the mechanism causing this bistability
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Implication of Jet Physics from MeV Line Emission of GRB 221009A Astrophys. J. Lett. (IF 8.8) Pub Date : 2024-09-15 Zhen Zhang, Haoxiang Lin, Zhuo Li, Shao-Lin Xiong, Yan-Qiu Zhang, Qinyuan Zhang, Shu-Xu Yi and Xilu Wang
Ultrarelativistic jets are believed to play an important role in producing prompt emission and afterglow of gamma-ray bursts (GRBs), but the nature of the jet is poorly known owing to the lack of decisive features observed in the prompt emission. The discovery of an emission line evolving from about 37 to 6 MeV in the brightest-of-all-time GRB 221009A provides an unprecedented opportunity to probe
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A multi-wavelength study of Galactic H II regions with extended emission Astron. Astrophys. (IF 5.4) Pub Date : 2024-09-17 Jyotirmoy Dey, Jagadheep D. Pandian, Dharam V. Lal, Michael R. Rugel, Andreas Brunthaler, Karl M. Menten, Friedrich Wyrowski, Nirupam Roy, Sergio A. Dzib, Sac-Nicté X. Medina, Sarwar Khan, Rohit Dokara
Context. H II regions are the signposts of massive (M ≥ 8 M⊙) star-forming sites in our Galaxy. It has been observed that the ionizing photon rate inferred from the radio continuum emission of H II regions is significantly lower (~90%) than that inferred from far-infrared fluxes measured by the Infrared Astronomical Satellite.Aims. This discrepancy in the ionizing photon rates may arise due to there
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Mapping the exo-Neptunian landscape Astron. Astrophys. (IF 5.4) Pub Date : 2024-09-17 A. Castro-González, V. Bourrier, J. Lillo-Box, J.-B. Delisle, D. J. Armstrong, D. Barrado, A. C. M. Correia
Context. Atmospheric and dynamical processes are thought to play a major role in shaping the distribution of close-in exoplanets. A striking feature of such distribution is the Neptunian desert, a dearth of Neptunes on the shortest-period orbits.Aims. We aimed to define the boundaries of the Neptunian desert and study its transition into the savanna, a moderately populated region at larger orbital
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Sulfur monoxide (SO) as a shock tracer in protoplanetary disks: Case of AB Aurigae Astron. Astrophys. (IF 5.4) Pub Date : 2024-09-17 A. Dutrey, E. Chapillon, S. Guilloteau, Y. W. Tang, A. Boccaletti, L. Bouscasse, T. Collin-Dufresne, E. Di Folco, A. Fuente, V. Piétu, P. Rivière-Marichalar, D. Semenov
Context. Sulfur monoxide (SO) is known to be a good shock tracer in molecular clouds and protostar environments, but its abundance is difficult to reproduce, even with state-of-the-art astrochemical models.Aims. We investigate the properties of the observed SO emission in the protoplanetary disk of AB Auriga, a Herbig Ae star of 2.4 M⊙ in mass, located at 156 pc. The AB Aur system is unique because
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Discs are born eccentric Astron. Astrophys. (IF 5.4) Pub Date : 2024-09-17 Benoît Commerçon, Francesco Lovascio, Elliot Lynch, Enrico Ragusa
Context. Recent observations have begun probing the early phases of disc formation, but little data yet exists on disc structure and morphology of Class 0 objects. Using simulations, we are able to lay out predictions of disc morphologies expected in future surveys of young discs. Based on detailed simulations of ab initio star formation by core collapse, we predict that early discs must be eccentric
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K2-399 b is not a planet Astron. Astrophys. (IF 5.4) Pub Date : 2024-09-17 J. Lillo-Box, D. W. Latham, K. A. Collins, D. J. Armstrong, D. Gandolfi, E. L. N. Jensen, A. Castro-González, O. Balsalobre-Ruza, B. Montesinos, S. G. Sousa, J. Aceituno, R. P. Schwarz, N. Narita, A. Fukui, J. Cabrera, A. Hadjigeorghiou, M. Kuzuhara, T. Hirano, M. Fridlund, A. P. Hatzes, O. Barragán, N. M. Batalha
Context. The transit technique has been very efficient over the past decades in detecting planet-candidate signals. The so-called statistical validation approach has become a popular way of verifying a candidate’s planetary nature. However, the incomplete consideration of false-positive scenarios and data quality can lead to misinterpretation of the results.Aims. In this work, we revise the planetary
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FAST Survey of H i and OH Absorption toward Extragalactic Radio Sources Astrophys. J. (IF 4.8) Pub Date : 2024-09-16 Yogesh Chandola, D. J. Saikia, Yin-Zhe Ma, Zheng Zheng, Chao-Wei Tsai, Di Li, Denis Tramonte and Hengxing Pan
Neutral atomic hydrogen and molecular gas in the host galaxies of radio active galactic nuclei can be traced using H i 21 cm and OH-1667 MHz absorption lines to understand the fueling and feedback processes. We present the results of an H i and OH absorption survey with the Five-hundred-meter Aperture Spherical radio Telescope toward 40 radio sources of low–intermediate radio luminosity (∼1023–1026
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JWST NIRSpec High-resolution Spectroscopy of MACS0647–JD at z = 10.167: Resolved [O ii] Doublet and Electron Density in an Early Galaxy Astrophys. J. (IF 4.8) Pub Date : 2024-09-16 Abdurro’uf, Rebecca L. Larson, Dan Coe, Tiger Yu-Yang Hsiao, Javier Álvarez-Márquez, Alejandro Crespo Gómez, Angela Adamo, Rachana Bhatawdekar, Arjan Bik, Larry D. Bradley, Christopher J. Conselice, Pratika Dayal, Jose M. Diego, Seiji Fujimoto, Lukas J. Furtak, Taylor A. Hutchison, Intae Jung, Meghana Killi, Vasily Kokorev, Matilde Mingozzi, Colin Norman, Tom Resseguier, Massimo Ricotti, Jane R. Rigby
We present JWST/NIRSpec high-resolution G395H/F290LP spectroscopy of MACS0647−JD, a gravitationally lensed galaxy merger at z = 10.167. The new spectroscopy, which is acquired for the two lensed images (JD1 and JD2), detects and resolves emission lines in the rest-frame ultraviolet and blue optical, including the resolved [O ii] λλ3726, 3729 doublet, [Ne iii] λ3870, He iλ3890, Hδ, Hγ, and [O iii] λ4363
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A Kinetic-magnetohydrodynamic Model with Adaptive Mesh Refinement for Modeling Heliosphere Neutral-plasma Interaction Astrophys. J. (IF 4.8) Pub Date : 2024-09-16 Yuxi Chen, Gabor Toth, Erick Powell, Talha Arshad, Ethan Bair, Marc Kornbleuth and Merav Opher
The charge exchange between the interstellar medium and the solar wind plasma is crucial for determining the structures of the heliosphere. Since both the neutral-ion and neutral–neutral collision mean free paths are either comparable to or larger than the size of the heliosphere, the neutral phase space distribution can deviate far away from the Maxwellian distribution. A kinetic description for the
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General Relativistic Radiation Magnetohydrodynamics Simulations of Precessing Tilted Super-Eddington Disks Astrophys. J. (IF 4.8) Pub Date : 2024-09-16 Yuta Asahina and Ken Ohsuga
We perform a three-dimensional general relativistic radiation magnetohydrodynamics simulation of a tilted super-Eddington accretion disk around a spinning black hole (BH). The disk, which tilts and twists as it approaches the BH, precesses while maintaining its shape. The gas is mainly ejected around the rotation axis of the outer part of the disk rather than around the spin axis of the BH. The disk
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Exploring the Small-scale Magnetic Fields in the Atmosphere of HD 49385 by Asteroseismic Analysis Astrophys. J. (IF 4.8) Pub Date : 2024-09-16 Yuetong Wang, Yaguang Li, Yan Li, Guifang Lin and Tao Wu
Recent asteroseismic studies have shown convincing evidence that magnetic fields may exist in the interior of some pulsating red giants. Inspired by this breakthrough, we explored the effect of small-scale magnetic fields on the p-mode oscillations in an evolved star, HD 49385. We incorporate a modified Eddington T–τ equation that phenomenologically mimics the effect of the magnetic fields in the atmosphere
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Cautionary Tales on Heating-rate Prescriptions in Kilonovae Astrophys. J. Lett. (IF 8.8) Pub Date : 2024-09-16 Nikhil Sarin and Stephan Rosswog
A major ingredient for kilonova lightcurves is the radioactive heating rate and its dependence on the electron fraction and velocity of the ejecta and, in principle, on the nuclear mass formula. Heating-rate formulae commonly used as the basis for kilonova models previously employed in the literature produce substantially different outputs for high electron fractions (Ye ≳ 0.3) and at late times (t
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The Origin of the Coherent Radio Flash Potentially Associated with GRB 201006A Astrophys. J. Lett. (IF 8.8) Pub Date : 2024-09-16 Nikhil Sarin, Teagan A. Clarke, Spencer J. Magnall, Paul D. Lasky, Brian D. Metzger, Edo Berger and Navin Sridhar
Rowlinson et al. recently claimed the detection of a coherent radio flash 76.6 minutes after a short gamma-ray burst (GRB). They proposed that the radio emission may be associated with a long-lived neutron star engine. We show through theoretical and observational arguments that the coherent radio emission, if real and indeed associated with GRB 201006A and at the estimated redshift, is unlikely to
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The Stellar Distribution in Ultrafaint Dwarf Galaxies Suggests Deviations from the Collisionless Cold Dark Matter Paradigm Astrophys. J. Lett. (IF 8.8) Pub Date : 2024-09-15 Jorge Sánchez Almeida, Ignacio Trujillo and Angel R. Plastino
Unraveling the nature of dark matter (DM) stands as a primary objective in modern physics. Here we present evidence suggesting deviations from the collisionless cold DM (CDM) paradigm. It arises from the radial distribution of stars in six ultrafaint dwarf (UFD) galaxies measured with the Hubble Space Telescope. After a trivial renormalization in size and central density, the six UFDs show the same
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Solar Atmospheric Oscillations as Measured by the GOES-R Series EXIS EUVS-C Instrument Astrophys. J. Lett. (IF 8.8) Pub Date : 2024-09-15 Thomas D. Eden, Francis. G. Eparvier, Andrew R. Jones, William E. McClintock, Donald L. Woodraska, Tom Woods and Martin Snow
This Letter presents first observations of distinct solar atmospheric oscillations from signals collected by the Extreme Ultraviolet and X-ray Irradiance Sensors EUVS-C instrument, which is part of each Geostationary Observational Environmental Satellite R-Series instrument payload. The EUVS-C instrument is a full-disk, normal-incidence spectrograph that covers a narrow band in the mid-ultraviolet
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Resolving Twin Jets and Twin Disks with JWST and ALMA: The Young WL 20 Multiple System Astrophys. J. (IF 4.8) Pub Date : 2024-09-15 Mary Barsony, Michael E. Ressler, Valentin J. M. Le Gouellec, Łukasz Tychoniec and Martijn L. van Gelder
We report the discovery of jets emanating from pre-main-sequence objects exclusively at mid-infrared wavelengths, enabled by the superb sensitivity of JWST’s Mid-Infrared Instrument Medium-Resolution Spectrometer. These jets are observed only in lines of [Ni ii], [Fe ii], [Ar ii], and [Ne ii]. The H2 emission, imaged in eight distinct transitions, has a completely different morphology, exhibiting a