ISSN:
1572-9672
Keywords:
Neutron stars
;
gamma-ray bursts
;
cosmology
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Theoretical logN-logS distributions and (V/V max) tests of gamma-ray bursts in the model of coalescence of neutron star (NS+NS) and/or NS+black hole (NS+BH) binaries are calculated for a flat Universe (Ω=1) with different values of the cosmological constant Λ and under various assumptions about the star formation history. The observed logN-logS distribution and value of (V/V max)=0.33 for 411 bursts with knownC max/C lim from the 2d BATSE catalogue are best fitted with a model for which ΩΛ = 0.2 and primary star formation occurs at redshiftsz≃5–6.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00751423
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