Maqola

A Search for Host Galaxies of 24 Gamma‐Ray Bursts

J. E. OvaldsenInstitute of Theoretical Astrophysics, University of Oslo P.O. Box 1029 Blindern, N-0315 Oslo, NorwayA. O. JaunsenInstitute of Theoretical Astrophysics, University of Oslo P.O. Box 1029 Blindern, N-0315 Oslo, NorwayJ. P. U. FynboDark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej, DK-2100 Copenhagen Ø, DenmarkJ. HjorthDark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej, DK-2100 Copenhagen Ø, DenmarkC. C. ThöneDark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej, DK-2100 Copenhagen Ø, DenmarkC. FéronDark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej, DK-2100 Copenhagen Ø, DenmarkD. XuDark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej, DK-2100 Copenhagen Ø, DenmarkJosefine SeljInstitute of Theoretical Astrophysics, University of Oslo P.O. Box 1029 Blindern, N-0315 Oslo, NorwayJ. TeuberDark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej, DK-2100 Copenhagen Ø, Denmark

2007en

ABI

Annotatsiya

We report the results from observations of 24 gamma ray burst (GRB) fields from 2005 and 2006 undertaken at the Danish 1.54m telescope at ESO/La Silla. Photometry and positions for two previously unpublished host galaxy candidates (GRBs 050915 and 051021) are presented, as well as for eight other detected objects which are either known GRB hosts or candidate hosts. The candidates are suitable for spectroscopic follow-up in order to have their redshifts and other physical characteristics determined. In the cases where no likely host candidate is detected inside the refined Swift XRT error circle we are still able to put interesting and rather deep limits on the host magnitude. Based on our detections and upper limits we have performed simulations which suggest that the host galaxies are drawn from a fainter sample than previous (i.e. pre-Swift) studies.

Hali tarjima qilinmagan

Identifikatorlar

DOI: 10.1086/517962

Iqtiboslar va manbalar

3 ta iqtibos0 ta foydalanilgan manba

Koʻrsatkichlar — AkademScholar