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Hubble Space Telescope and Ground-based Optical and Ultraviolet Observations of GRB 010222

Galama, T. J. and Reichart, D. and Brown, T. M. and Kimble, R. A. and Price, P. A. and Berger, E. and Frail, D. A. and Kulkarni, S. R. and Yost, S. A. and Gal-Yam, A. and Bloom, J. S. and Harrison, F. A. and Sari, R. and Fox, D. and Djorgovski, S. G. (2003) Hubble Space Telescope and Ground-based Optical and Ultraviolet Observations of GRB 010222. Astrophysical Journal, 587 (1). pp. 135-142. ISSN 0004-637X. doi:10.1086/368123.

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We report on Hubble Space Telescope (HST) Wide Field Planetary Camera 2 optical and Space Telescope Imaging Spectrograph (STIS) near-ultraviolet MAMA observations and ground-based optical observations of GRB 010222, spanning 15 hr to 71 days. The observations are well described by a relativistic blast wave model with a hard electron energy distribution, p = 1.57^(+0.04)_(-0.03), and a jet transition at t* = 0.93^(+0.15)_(-0.06) days. These values are slightly larger than previously found as a result of a correction for the contribution from the host galaxy to the late-time ground-based observations and the larger temporal baseline provided by the HST observations. The host galaxy is found to contain a very compact core (size <0 25), which coincides with the position of the optical transient. The STIS near-ultraviolet MAMA observations allow for an investigation of the extinction properties along the line of sight to GRB 010222. We find that the far-ultraviolet curvature component c4 is rather large. In combination with the low optical extinction, AV = 0.110^(+0.010)_(-0.021) mag, when compared with the hydrogen column inferred from X-ray observations, we suggest that this is evidence for dust destruction.

Item Type:Article
Related URLs:
URLURL TypeDescription
Reichart, D.0000-0002-5060-3673
Brown, T. M.0000-0002-1793-9968
Berger, E.0000-0002-9392-9681
Kulkarni, S. R.0000-0001-5390-8563
Gal-Yam, A.0000-0002-3653-5598
Bloom, J. S.0000-0002-7777-216X
Harrison, F. A.0000-0003-2992-8024
Sari, R.0000-0002-1084-3656
Fox, D.0000-0002-3714-672X
Djorgovski, S. G.0000-0002-0603-3087
Additional Information:© 2003 The American Astronomical Society. Received 2002 June 25; accepted 2002 December 18. E. O. Ofek and J. Dann are thanked for their help with observations at the Wise Observatory. We wish to thank Steve Beckwith and the HST operations staff for facilitating the WFPC2 and STIS observations. T. J. G. acknowledges support from the Sherman Fairchild Foundation. F. A. H. acknowledges support from a Presidential Early Career award. S. R. K. and S. G. D. thank the National Science Foundation for support of their ground-based GRB programs. A. G. J. is a Colton Fellow. J. S. B. is a Fannie and John Hertz Foundation Fellow.
Group:Space Radiation Laboratory
Funding AgencyGrant Number
Sherman Fairchild FoundationUNSPECIFIED
Caltech President’s FundUNSPECIFIED
Tel Aviv UniversityUNSPECIFIED
Fannie and John Hertz FoundationUNSPECIFIED
Subject Keywords:gamma rays: bursts
Issue or Number:1
Record Number:CaltechAUTHORS:20190924-102314226
Persistent URL:
Official Citation:T. J. Galama et al 2003 ApJ 587 135
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:98829
Deposited By: Tony Diaz
Deposited On:24 Sep 2019 20:50
Last Modified:16 Nov 2021 17:41

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