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Explaining recently studied intermediate luminosity optical transients (ILOTs) with jet powering
Research in Astronomy and Astrophysics ( IF 1.8 ) Pub Date : 2021-05-20 , DOI: 10.1088/1674-4527/21/4/90
Noam Soker 1, 2 , Noa Kaplan 1
Affiliation  

We apply the jet-powered ILOT scenario to two recently studied intermediate luminosity optical transients (ILOTs), and find the relevant shell mass and jets’ energy that might account for the outbursts of these ILOTs. In the jet-powered ILOT scenario, an accretion disk around one of the stars of a binary system launches jets. The interaction of the jets with a previously ejected slow shell converts kinetic energy to thermal energy, part of which is radiated away. We apply two models of the jet-powered ILOT scenario. In the spherical shell model, the jets accelerate a spherical shell, while in the cocoon toy model the jets penetrate into the shell and inflate hot bubbles, the cocoons. We find consistent results. For the ILOT (ILRT: intermediate luminosity red transient) SNhunt120 we find the shell mass and jets’ energy to be M s ≃ 0.5 − 1 M and E 2j ≃ 5 1047 erg, respectively. The jets’ half opening angle is αj ≃ 30 − 60. For the second peak of the ILOT (luminous red nova) AT 2014ej we find these quantities to be M s ≃ 1 − 2 M and E 2j ≃ 1.5 1048 erg, with αj ≃ 20 − 30. The models cannot tell whether these ILOTs were powered by a stellar merger that leaves one star, or by mass transfer where both stars survived. In both cases the masses of the shells and energies of the jets suggest that the binary progenitor system was massive, with a combined mass of M 1 + M 2 ≳ 10 M .



中文翻译:

解释最近研究的具有喷射动力的中间光度光学瞬变 (ILOT)

我们将喷气驱动的 ILOT 场景应用于最近研究的两个中间光度光学瞬变 (ILOT),并找到了可能解释这些 ILOT 爆发的相关壳质量和喷流能量。在喷气驱动的 ILOT 情景中,双星系统中一颗恒星周围的吸积盘会发射喷气机。射流与先前喷射的慢壳的相互作用将动能转化为热能,其中一部分被辐射掉。我们应用了喷气动力 ILOT 场景的两个模型。在球壳模型中,射流会加速球壳,而在茧玩具模型中,射流会穿透球壳并膨胀热气泡,即茧。我们发现一致的结果。对于 ILOT(ILRT:中间光度红色瞬变)SNhunt120,我们发现壳层质量和喷流能量为M s ≃ 0.5 − 1 M E 2j ≃ 5 10 47 erg,分别。喷流的半张角为α j ≃ 30 − 60。对于 ILOT(发光红色新星)AT 2014ej 的第二个峰值,我们发现这些量为M s ≃ 1 − 2 M E 2j ≃ 1.5 10 48 erg , 与α j ≃ 20 − 30。模型无法判断这些 ILOT 是由留下一颗恒星的恒星合并提供动力,还是由两颗恒星幸存的质量转移提供动力。在这两种情况下,壳的质量和喷流的能量表明双星前身系统是巨大的,其总质量为M 1 + M 2 10 M⊙

更新日期:2021-05-20
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