Open AccessGRB 020410: A Gamma‐Ray Burst Afterglow Discovered by Its Supernova Light
Author(s) -
A. J. Levan,
P. Nugent,
A. S. Fruchter,
I. Burud,
David Branch,
James E. Rhoads,
A. J. Castro–Tirado,
Javier Gorosabel,
J. M. Castro Cerón,
S. E. Thorsett,
C. Kouveliotou,
S. Golenetskii,
J. P. U. Fynbo,
P. Garnavich,
S. T. Holland,
J. Hjorth,
P. Møller,
E. Pian,
N. R. Tanvir,
M. Ulanov,
R. A. M. J. Wijers,
S. E. Woosley
Publication year - 2005
Publication title -
the astrophysical journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.376
H-Index - 489
eISSN - 1538-4357
pISSN - 0004-637X
DOI - 10.1086/428657
Subject(s) - afterglow , gamma ray burst , physics , astrophysics , redshift , supernova , astronomy , observatory , light curve , flux (metallurgy) , galaxy , chemistry , organic chemistry
We present the discovery and monitoring of the optical transient (OT)associated with GRB 020410. The fading OT was found by Hubble Space Telescope(HST) observations taken 28 and 65 days after burst at a position consistentwith the X-ray afterglow. Subsequent re-examination of early ground basedobservations revealed that a faint OT was present 6 hours after burst,confirming the source association with GRB 020410. A deep non-detection afterone week requires that the OT re-brightened between day 7 and day 28, andfurther late time HST data taken approximately 100 days after burst imply thatit is very red.We compare both the flux and color of the excess with supernovamodels and show that the data are best explained by the presence of a Type Ib/csupernova at a redshift z ~ 0.5, which occured roughly coincident with the dayof GRB.Comment: 23 Pages, 9 figures, submitted to Ap
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