TY - JOUR
T1 - The distribution of cosmological γ-ray bursts
AU - Cohen, Ehud
AU - Piran, Tsvi
PY - 1995/5/1
Y1 - 1995/5/1
N2 - We compare the burst distribution of the BATSE-2B catalog to a cosmological distribution. The observed distribution agrees well with a cosmological one, however, it is insensitive to cosmological parameters such as Ω and Λ. The bursts are not necessarily standard candles, and their luminosity can vary by up to a factor of 10. The maximal redshift, zmax, of bursts longer than 2 s is 2.1+1-0.7 (assuming no evolution). The present data is insufficient to determine maximal redshift, zmax, of bursts shorter than 2 s.
AB - We compare the burst distribution of the BATSE-2B catalog to a cosmological distribution. The observed distribution agrees well with a cosmological one, however, it is insensitive to cosmological parameters such as Ω and Λ. The bursts are not necessarily standard candles, and their luminosity can vary by up to a factor of 10. The maximal redshift, zmax, of bursts longer than 2 s is 2.1+1-0.7 (assuming no evolution). The present data is insufficient to determine maximal redshift, zmax, of bursts shorter than 2 s.
KW - Cosmology: observations
KW - Gamma rays: bursts
UR - http://www.scopus.com/inward/record.url?scp=11944262826&partnerID=8YFLogxK
U2 - 10.1086/187851
DO - 10.1086/187851
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AN - SCOPUS:11944262826
SN - 0004-637X
VL - 444
SP - L25-L28
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 1 PART 2
ER -