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arXiv 2008.11375astro-ph.HE
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十年前I型超亮超新星PTF10hgi的射电辐射:与FRB121102的比较

Radio emission from a decade old Type I superluminous supernova, PTF10hgi: Comparison with FRB121102

Surajit Mondal, Apurba Bera, Poonam Chandra, Barnali Das

摘要:

我们进行了比较研究之间唯一的无线电检测到的I型超亮超新星(SLSN)PTF 10 hgi,最活跃的重复快速射电暴FRB 121102。这项研究的根源在于假设的FRB-SLSN连接,即SLSN中诞生的磁星可以为FRB提供动力。本文给出的PTF 10 hgi的宽带谱(0.6- 15 GHz)为射电辐射的磁星风星云起源提供了有力的证据。同样的光谱也使我们能够对射电发射区的半径和磁场做出可靠的估计,并证明星云是由磁星的旋转能量驱动的。然后将此频谱与FRB 121102进行比较,我们使用存档数据将其扩展到400 MHz。新增加的测量对与FRB 121102相关的紧凑型持续源的排放模型提出了非常严格的约束。我们发现,虽然这两个源可以由底层磁星的旋转能量提供动力,但FRB 121102的平均能量注入率要高得多。因此,我们假设,如果PTF 10 hgi确实在发射快速射电暴,那么这些射电暴在能量上将比FRB 121102的射电暴弱得多。

英文摘要:

We perform a comparative study between the only radio detected Type I superluminous supernova (SLSN) PTF10hgi, and the most active repeating fast radio burst FRB121102. This study has its root in the hypothesized FRB-SLSN connection that states that magnetars born in SLSN can power FRBs. The wideband spectrum (0.6--15 GHz) of PTF10hgi presented here, provides strong evidence for the magnetar wind nebular origin of the radio emission. The same spectrum also enables us to make robust estimates of the radius and the magnetic field of the radio emitting region and demonstrates that the nebula is powered by the rotational energy of the magnetar. This spectrum is then compared with that of FRB121102 which we extend down to 400 MHz using archival data. The newly added measurements put very tight constraint on the emission models of the compact persistent source associated with FRB121102. We find that while both sources can be powered by the rotational energy of the underlying magnetar, the average energy injection rate is much higher in FRB121102. Hence, we hypothesise that, if PTF10hgi is indeed emitting fast radio bursts, those will be much weaker energetically than those from FRB121102.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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