The Expected Redshift Distribution of Gamma‐Ray Bursts | Zendy

Volker Bromm | Zendy; Abraham Loeb | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

The Expected Redshift Distribution of Gamma‐Ray Bursts

Author(s) -

Volker Bromm,

Abraham Loeb

Publication year - 2002

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/341189

Subject(s) - gamma ray burst , redshift , astrophysics , physics , supernova , sky , star formation , astronomy , mass distribution , cosmic cancer database , redshift survey , galaxy

We predict the redshift distribution of Gamma-Ray Bursts (GRBs) assuming thatthey trace the cosmic star formation history. We find that a fraction >~50% ofall GRBs on the sky originate at a redshift z >~5, even though the fraction ofthe total stellar mass formed by z~5 is only ~15%. These two fractions aresignificantly different because they involve different cosmological factorswhen integrating the star formation rate over redshift. Hence, deepobservations of transient events, such as GRB afterglows or supernovae, providean ideal strategy for probing the high-redshift universe. We also show that theintrinsic distribution of GRB durations is bimodal but significantly narrowerand shifted towards shorter durations than the observed distribution.Comment: 6 pages, 4 figures, revised and enlarged version, ApJ in press (2002

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research