Evolution of Galactic Nuclei, GRB Rate and Recurrence

Details Evolution of Galactic Nuclei, GRB Rate and Recurrence Evolution of Galactic Nuclei, GRB Rate and Recurrence

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998tx19.confe..35d&link_type=abstract

Abstracts of the 19th Texas Symposium on Relativistic Astrophysics and Cosmology, held in Paris, France, Dec. 14-18, 1998. Eds.:

Astronomy and Astrophysics

Astrophysics

Scientific paper

We calculate the redshift distribution of gamma-ray burst (GRB) rate in the framework of our new cosmological model of GRB origin in the central dense stellar clusters of evolved galactic nuclei due to the accidental radiative collisions of constituent neutron stars (see ApJ 502, 192, 1998). We take into account the observational redshift distribution of quasars and recently found correlation between the masses of galaxies and their central massive black holes (MBHs). The calculated redshift distribution of the GRB rate is consistent with that inferred from the BATSE data. Our model predicts a possibility of GRB recurrence, which is expected to take place in a sufficiently evolved galactic nucleus prior to the formation of MBH there. We discuss the expected characteristics of recurrent GRB events and compare them with those for the multiple GRBs observed during the two days of October 1996.

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