Issue |
Astron. Astrophys. Suppl. Ser.
Volume 138, Number 3, September 1999
Gamma-Ray Bursts in the Afterglow Era Contents Rome, November 3-6, 1998
|
|
---|---|---|
Page(s) | 477 - 478 | |
DOI | https://doi.org/10.1051/aas:1999317 | |
Published online | 15 September 1999 |
Severe new limits on the host galaxies of Gamma-Ray Bursts
Department of Physics, Yale University, New Haven, CT 06520-8121, U.S.A.
Received:
29
December
1998
Accepted:
9
June
1999
Most burst models require bursters to reside in normal host galaxies with
peak luminosities of photon s-1 or
photon s-1. These models can be directly tested by looking for host
galaxies in small GRB error boxes in either of two data sets: (1) 8 optical transients
detected for SAX bursts and (2) 23 of the all-time bright bursts. If the hosts are
normal galaxies, then analysis of either data set shows
photon s-1.
This result strongly rejects both luminosity cases provided bursters appear in normal
host galaxies, with the bright burst sample being free of problems relating to galaxy
evolution. In conclusion, bursters are either more distant than allowed for in the
star-formation-rate scenario or they are not in normal galaxies.
Key words: gamma-rays: bursts
© European Southern Observatory (ESO), 1999