The USNO deep optical survey of small IPN3 localizations: Where are the hosts?

Details The USNO deep optical survey of small IPN3 localizations: Where are the hosts? The USNO deep optical survey of small IPN3 localizations: Where are the hosts?

May 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aipc..428..625v&link_type=abstract

Fourth Huntsville gamma-ray burst symposium. AIP Conference Proceedings, Volume 428, pp. 625-629 (1998).

Astronomy and Astrophysics

Astronomy

2

Gamma-Ray Sources, Gamma-Ray Bursts, Quasars, Astronomical Observations

Scientific paper

We present a summary of our deep optical photometric surveys of five small (<8 arcmin2) IPN3 GRB localizations at high Galactic latitude (bII>25°). All of the localizations contain galaxies ranging in brightness from V~18 to our survey limits at about V~23. Without model-dependent assumptions of acceptable GRB distances, these galaxies, which are several magnitudes brighter than the galaxy associated with the GRB970228 optical transient, are viable GRB host candidates. We find a QSO candidate in only one of the localizations, and are therefore unable to support the hypothesis, based on larger IPN1 localizations, that QSO/AGNs or blue galaxies may be associated with GRBs [1,2]. We examine possible reasons for this negative result.

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