Gamma-ray bursts in starburst galaxies

Details Gamma-ray bursts in starburst galaxies Gamma-ray bursts in starburst galaxies

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005assl..329p..11c&link_type=abstract

Starbursts: From 30 Doradus to Lyman Break Galaxies, Held in Cambridge, UK, 6-10 September 2004. Edited by R. de Grijs and R.M.

Astronomy and Astrophysics

Astrophysics

Scientific paper

Recently, it has been established that at least some long-duration gamma ray bursts (GRBs) are associated with supernova explosions. Studying galaxies that host GRBs yields insight into the properties of star-forming galaxies at high redshifts. We investigate the broad-band spectral energy distribution of a sample of GRB host galaxies at redshifts 0.4 < z < 2. They are all consistent with being starburst galaxies. Their global star-formation rates (SFR) derived from the UV fluxes are not extreme, but when normalising the SFR to the galaxy luminosity, differences from field galaxy populations at similar redshifts appear. The specific SFRs of GRB hosts are slightly larger, while the starburst ages and global extinctions are similar.

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