X/gamma-ray measurements of the faint GRB 020321
J. J. M. in 't Zand, L. Kuiper, J. Heise, L. Amati, E. Costa, M. Feroci, F. Frontera, G. Gandolfi, L. Nicastro, L. Piro, P. Rodriguez-Pascual, M. Santos-Lleo, N. Schartel
Abstract
GRB 020321 is a faint GRB that received wide follow-up attention in X-rays (BeppoSAX/NFI, Chandra/ACIS-S, XMM-Newton), radio (ATCA) and optical (ESO, HST). We identify a weak X-ray afterglow by a combined study of the Chandra and XMM-Newton observations. Its decay index of 1.2 is typical for GRB afterglows. Inside the 4"-accurate error box there is a weak optical counterpart candidate with a much shallower decay index.
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