论文标题
一项针对即将到来的SVOM时代的高级$ z $ grb和探索Circumburst环境的试点研究
A Pilot Study of Catching High-$z$ GRBs and Exploring Circumburst Environment in the Forthcoming SVOM Era
论文作者
论文摘要
GRB次要的快速光谱是一项重要而艰巨的任务。根据档案XS-GRB光谱数据库，我们在这里对即将到来的\ rm ERA在两个方面的余辉光谱进行了一项试点研究。首先，我们的仿真表明从\ it \ rm/vt蓝色和红色通道获得的颜色可有效区分低$ z $（$ z \ lyssim3 $）和远处的grb候选者，直到$ z \ sim6 $。其次，通过使样本量增加一倍，我们发现先前提出的Circumburst气体对及时发射的全球光电离反应（即CIV/CII- $ L _ {\ MATHRM {iso}}/e^2 _ {\ Mathrm {peacs}} $ MATHRM {peak}} $ succersef at imStive IS AD dissative insative in $ l _ {\ Mathrm {iso}}/e^2 _ {\ Mathrm {peach}} $ end。我们认为，由于其能力快速鉴定了余辉的光学候选及其反 - 极指向策略，因此可以通过更大的光谱样本在\ rm ERA中进一步解决这个问题。
Rapid spectroscopy of GRB afterglows is an important and hard task. Based on the archival XS-GRB spectral database, we here perform a pilot study on the afterglow's spectroscopy in the forthcoming \it SVOM \rm era in two aspects. At first, our simulation indicates that the color acquired from the \it SVOM\rm/VT blue and red channels is effective in discriminating between low-$z$ ($z\lesssim3$) and distant GRB candidates until $z\sim6$. Secondly, by doubling the sample size, we find that the previously proposed global photoionization response of the circumburst gas to the prompt emission (i.e., the CIV/CII-$L_{\mathrm{iso}}/E^2_{\mathrm{peak}}$ relationship) is roughly confirmed, although the confirmation is dissatisfactory at the large $L_{\mathrm{iso}}/E^2_{\mathrm{peak}}$ end. We believe that this issue can be further addressed in the \it SVOM \rm era by larger spectroscopy sample, thanks to its capability of rapid identification of optical candidates of afterglow and its anti-solar pointing strategy.
