GRB 010222: A Burst Within a Starburst
Abstract
We present millimeter and submillimeter wavelength observations and near-infrared K-band imaging toward the bright gamma-ray burst GRB 010222. Over seven epochs the flux density of the source was constant with an average flux density 3.74+/-0.53 mJy at 350 GHz and 1.05+/-0.22 mJy at 250 GHz, giving a spectral index alpha=3.78+/-0.25. We rule out the possibility that this emission originated from the burst or its afterglow and we conclude that it is due to a dusty, high redshift starburst galaxy (SMM J14522+4301). We argue that the host galaxy of GRB 010222 is the most plausible counterpart of SMM J14522+4301, based in part on the centimeter detection of the host at the expected level. The optical/NIR properties of the host galaxy of GRB 010222 suggest that it is a blue, sub-L_*, similar to other GRB host galaxies. This contrasts with the enormous far-infrared luminosity of this galaxy based on our submillimeter detection (L_Bol~4X10^{12} L_odot). We suggest that this GRB host galaxy has a very high star formation rate, SFR 600 M_\odot/yr, most of which is unseen at optical wavelengths.
Cite
@article{arxiv.astro-ph/0108436,
title = {GRB 010222: A Burst Within a Starburst},
author = {D. A. Frail and F. Bertoldi and G. H. Moriarty-Schieven and E. Berger and P. A. Price and J. S. Bloom and R. Sari and S. R. Kulkarni and C. L. Gerardy and D. E. Reichart and S. G. Djorgovski and T. J. Galama and F. A. Harrison and F. Walter and D. S. Shepherd and J. Halpern and A. B. Peck and K. M. Menten and S. A. Yost and D. W. Fox},
journal= {arXiv preprint arXiv:astro-ph/0108436},
year = {2009}
}
Comments
ApJ, submitted