High Redshift Gamma-Ray Bursts as a Probe of the Early Universe and First Stars

Document Type

Article

Publication Date

1-22-2018

Publication Title

Scientia Sinica: Physica, Mechanica et Astronomica

Volume

48

Issue

3

First page number:

1

Last page number:

11

Abstract

Gamma-ray bursts (GRBs) are the most violent explosions in the universe. Thanks totheir extreme brightness, GRBs can be detected up to the edge of the visible universe.As bright beacons in the deep universe, high-redshift GRBs have been considered as an ideal tool toexplore the properties of the early universe: including the dark energy and cosmological parameters,star formation rate, first stars, the reionization and metal enrichment history of the universe.So the detection of high-zz GRBs has important scientific significance. Compared to currentmissions, Einstein Probe has a higher sensitivity and a wider field-of-view, operating the softX-ray band (0.5–4 keV), which would be suitable for the detection of high-zz GRBs. With itsobservational mode and ability, we compute the expected detection rate of high-zz GRBs byEinstein Probe by means of a observational tested population synthesis model of Swift GRBs… See full text for full abstract.

Keywords

Early universe; First stars; Gamma-ray burst; High-redshift

Disciplines

Astrophysics and Astronomy

Language

Chinese; English

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