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Localized Fast Radio Bursts Are Consistent with Magnetar Progenitors Formed in Core-collapse Supernovae
The Astrophysical Journal Letters ( IF 8.8 ) Pub Date : 2021-01-28 , DOI: 10.3847/2041-8213/abd634
Christopher D. Bochenek , Vikram Ravi , Dillon Dong

With the localization of fast radio bursts (FRBs) to galaxies similar to the Milky Way and the detection of a bright radio burst from SGR J1935+2154 with energy comparable to extragalactic radio bursts, a magnetar origin for FRBs is evident. By studying the environments of FRBs, evidence for magnetar formation mechanisms not observed in the Milky Way may become apparent. In this Letter, we use a sample of FRB host galaxies and a complete sample of core-collapse supernova (CCSN) hosts to determine whether FRB progenitors are consistent with a population of magnetars born in CCSNe. We also compare the FRB hosts to the hosts of hydrogen-poor superluminous supernovae (SLSNe-I) and long gamma-ray bursts (LGRBs) to determine whether the population of FRB hosts is compatible with a population of transients that may be connected to millisecond magnetars. After using a novel approach to scale the stellar masses and star formation rates of each host galaxy to be statistically representative of z = 0 galaxies, we find that the CCSN hosts and FRBs are consistent with arising from the same distribution. Furthermore, the FRB host distribution is inconsistent with the distribution of SLSNe-I and LGRB hosts. With the current sample of FRB host galaxies, our analysis shows that FRBs are consistent with a population of magnetars born through the collapse of giant, highly magnetic stars.



中文翻译:

局部快速射电暴与核心坍缩超新星中形成的磁星前体一致

随着快速射电暴 (FRB) 定位到类似于银河系的星系,以及探测到来自 SGR J1935+2154 的明亮射电暴,其能量与河外射电暴相当,FRB 的磁星起源是显而易见的。通过研究 FRB 的环境,在银河系中未观察到的磁星形成机制的证据可能会变得明显。在这封信中,我们使用一个 FRB 宿主星系样本和一个完整的核心坍缩超新星 (CCSN) 宿主样本来确定 FRB 祖先是否与在 CSN 中诞生的磁星群一致。我们还将 FRB 宿主与贫氢超发光超新星 (SLSNe-I) 和长伽马射线爆发 (LGRB) 的宿主进行了比较,以确定 FRB 宿主的群体是否与可能与毫秒相关的瞬变群体兼容磁星。z = 0 星系,我们发现 CCSN 主机和 FRB 是一致的,来自相同的分布。此外,FRB 主机分布与 SLSNe-I 和 LGRB 主机的分布不一致。根据当前的 FRB 宿主星系样本,我们的分析表明,FRB 与通过巨大的高磁恒星坍缩而产生的磁星群一致。

更新日期:2021-01-28
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