X-shooter伽马射线暴余辉遗留样本（XS-GRB）
高能天体物理现象
2019-03-13 v1
摘要
本工作中，我们呈现了截至2017-03-31所有用X-shooter光谱仪迅速观测的射线暴（GRB）余辉的光谱。总计，我们获得了103个在GRB触发后48小时内观测到的独立GRB的光谱观测。其中97%测得了红移，覆盖0.059至7.84的红移范围。基于一组最小化关于GRB内禀属性偏置的观测选择标准，后续工作聚焦于产生一个由Swift卫星发现的93个余辉光谱的均匀样本。我们在此公开发布所有减缩光谱，包括连续谱估计与大气吸收修正。为完整起见，我们也提供18个晚期对潜在宿主星系观测的减缩数据。我们依据样本中暴的X射线属性，评估了相对于母GRB总体的完备程度，发现此处呈现的样本代表了完整的Swift样本。我们将暗暴比例限制为<28%，并确认了先前结果，即更高的光学暗度与增强的X射线吸收相关。对于其中42个暴，我们提供了中性氢柱密度的测量，使已发表HI柱密度测量总数增加了33%。该数据集提供了研究跨越宇宙时间的星际介质（从本地前身星环境到介入宇宙）的独特资源。
引用
@article{arxiv.1802.07727,
title = {The X-shooter GRB afterglow legacy sample (XS-GRB)},
author = {J. Selsing and D. Malesani and P. Goldoni and J. P. U. Fynbo and T. Krühler and L. A. Antonelli and M. Arabsalmani and J. Bolmer and Z. Cano and L. Christensen and S. Covino and P. D'Avanzo and V. D'Elia and A. De Cia and A. de Ugarte Postigo and H. Flores and M. Friis and A. Gomboc and J. Greiner and P. Groot and F. Hammer and O. E. Hartoog and K. E. Heintz and J. Hjorth and P. Jakobsson and J. Japelj and D. A. Kann and L. Kaper and C. Ledoux and G. Leloudas and A. J. Levan and E. Maiorano and A. Melandri and B. Milvang-Jensen and E. Palazzi and J. T. Palmerio and D. A. Perley and E. Pian and S. Piranomonte and G. Pugliese and R. Sánchez-Ramírez and S. Savaglio and P. Schady and S. Schulze and J. Sollerman and M. Sparre and G. Tagliaferri and N. R. Tanvir and C. C. Thöne and S. D. Vergani and P. Vreeswijk and D. Watson and K. Wiersema and R. Wijers and D. Xu and T. Zafar},
journal= {arXiv preprint arXiv:1802.07727},
year = {2019}
}
备注
41 pages, 10 Figures, 4 Tables. Submitted to A&A. Paper and code also available at https://github.com/jselsing/XSGRB-sample-paper