Number counts of GRBs in a vacuum dominated universe

Details Number counts of GRBs in a vacuum dominated universe Number counts of GRBs in a vacuum dominated universe

Oct 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aipc..587..185s&link_type=abstract

GAMMA 2001: Gamma-Ray Astrophysics 2001. AIP Conference Proceedings, Volume 587, pp. 185-189 (2001).

Astronomy and Astrophysics

Astrophysics

Gamma-Ray Sources, Gamma-Ray Bursts, Observational Cosmology, Mathematical Procedures And Computer Techniques

Scientific paper

It is known that the population of GRBs is consistent with a standard cosmological model with Ω=1. However, recent theoretical and observational studies indicate that the universe could be vacuum dominated. We develop an analytical algorithm, beginning with the luminosity distance, DL, to analyze bursts in a vacuum dominated universe, Ω=Ωv+Ωm=1. Using that result, we then show that the BATSE sample of GRBs is consistent with a universe where Ωv~0.6. .

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