T. J. Galama et al 1998 ApJ 497 L13 doi:10.1086/311268
T. J. Galama1, P. J. Groot1, J. van Paradijs1,2, C. Kouveliotou3,4, R. G. Strom1,5, R. A. M. J. Wijers6, N. Tanvir6, J. Bloom7, M. Centurion8,9, J. Telting9, R. G. M. Rutten9, P. Smith10, C. Mackey10, S. Smartt9, C. Benn9, J. Heise11 and J. in't Zand11
Show affiliationsWe report on the results of optical follow-up observations of the counterpart of the gamma-ray burst GRB 970508, starting 7 hr after the event. Multicolor U-, B-, V-, Rc-, and Ic-band observations were obtained during the first three consecutive nights. The counterpart was monitored regularly in Rc until ~4 months after the burst. The light curve after the maximum follows a decline that can be fitted with a power law with exponent α = -1.141 ± 0.014. Deviations from a smooth power-law decay are moderate (rms = 0.15 mag). We find no flattening of the light curve at late times. The optical afterglow fluence is a significant fraction, ~5%, of the GRB fluence. The optical energy distribution can be well represented by a power law, the slope of which changed at the time of the maximum (the spectrum became redder).
Issue 1 (1998 April 10)
Received 1997 November 20, accepted for publication 1998 February 10
Published 1998 March 17
T. J. Galama et al 1998 ApJ 497 L13
Iddo Eliazar and Joseph Klafter 2009 J. Phys. A: Math. Theor. 42 472003
Sudipta Roy 2007 J. Phys. D: Appl. Phys. 40 R413
J Tempere and J T Devreese 2006 J. Phys. B: At. Mol. Opt. Phys. 39 S57
Sang-Yoon Kim and Woochang Lim 2003 J. Phys. A: Math. Gen. 36 6951
M. Tsujimoto et al. 2005 ApJS 160 503
Klaus Baberschke 2009 J. Phys.: Conf. Ser. 190 012012
A. Mastichiadis and D. Kazanas 2006 ApJ 645 416
Hiroyuki Hirashita 1999 ApJ 522 220
Kazuya Tada and Mitsuyoshi Onoda 2009 J. Phys. D: Appl. Phys. 42 132001