短伽马暴余辉与 AT2017gfo 的比较：揭示千新星性质
高能天体物理现象
2020-02-26 v3
摘要
随着千新星 AT2017gfo（与短伽马射线暴 GRB 170817A 相关的引力波源 GW170817 的光学对应体）的发现，多信使天文学获得巨大推动。AT2017gfo 是首个可在时间上被广泛进行测光与光谱监测的千新星。此前，仅有少数候选体在短 GRB 余辉的光芒中被观测到。在本工作中，我们旨在 39 个具有已知红移的短 GRB 的光学/NIR 光变曲线中搜寻 AT2017gfo 类千新星辐射的痕迹。我们的结果首次允许我们分别研究短 GRB 中 AT2017gfo 类千新星蓝、红两成分的光度范围。特别地，红成分光度与 AT2017gfo 相似，而蓝千新星可亮逾 10 倍。最后，我们找到进一步证据支持所有已宣称的千新星探测，并排除 GRB 050509B 与 061201 中存在 AT2017gfo 类千新星。
引用
@article{arxiv.1901.05792,
title = {A comparison between short GRB afterglows and AT2017gfo: shedding light on kilonovae properties},
author = {A. Rossi and G. Stratta and E. Maiorano and D. Spighi and N. Masetti and E. Palazzi and A. Gardini and A. Melandri and L. Nicastro and E. Pian and M. Branchesi and M. Dadina and V. Testa and S. Brocato and S. Benetti and R. Ciolfi and S. Covino and V. D'Elia and A. Grado and L. Izzo and A. Perego and S. Piranomonte and R. Salvaterra and J. Selsing and L. Tomasella and S. Yang and D. Vergani and L. Amati and J. B. Stephen},
journal= {arXiv preprint arXiv:1901.05792},
year = {2020}
}
备注
41 pages, 14 figures, submitted to MNRAS. Includes a table with updated short GRB optical/NIR photometry and one with AT2017gfo light curves in UBVRIgrizJHK filters. Updated constraints on luminosity of AT2017gfo-like kilonovae. Updated sample of kilonova candidates