期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 453, 期 1, 页码 101-105出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stv1640
关键词
gamma-ray burst: general; dark ages, reionization, first stars; radio lines: general
资金
- DFG [1177, 1573]
- MEXT of Japan [24340048]
- People Programme (Marie Curie Actions) of the European Union's Seventh Framework Programme [327999]
- European Research Council [FIRSTLIGHT - 258942]
- Science and Technology Facilities Council [ST/L000652/1]
- Netherlands Foundation for Scientific Research (NWO) [639.041.336]
- Royal Society
- STFC [ST/L000695/1, ST/L000652/1, ST/I000976/1, ST/M001946/1, ST/I001212/1, ST/M001334/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/M001334/1, ST/L000695/1, ST/L000652/1, ST/M001946/1] Funding Source: researchfish
We investigate the feasibility of detecting 21 cm absorption features in the afterglow spectra of high redshift long Gamma Ray Bursts (GRBs). This is done employing simulations of cosmic reionization, together with estimates of the GRB radio afterglow flux and the instrumental characteristics of the LOw Frequency ARray (LOFAR). We find that absorption features could be marginally (with a S/N larger than a few) detected by LOFAR at z greater than or similar to 7 if the GRB is a highly energetic event originating from Pop III stars, while the detection would be easier if the noise were reduced by one order of magnitude, i.e. similar to what is expected for the first phase of the Square Kilometre Array (SKA1-low). On the other hand, more standard GRBs are too dim to be detected even with ten times the sensitivity of SKA1-low, and only in the most optimistic case can a S/N larger than a few be reached at z greater than or similar to 9.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据