Swift uncovers that SAX J0840.7+2248 is not an X-ray Binary, but BeppoSAX X-ray Rich GRB 980429

Romano, P.
Guidorzi, C.
Sidoli, L.
Montanari, E.
Capitanio, F.
Amati, L.
Cucchiara, A.
Frontera, F.
Masetti, N.
Mereghetti, S.
Rossi, F.

Open link

Publication date

January 2008

DOI

10.1063/1.2943430

Publisher

AIP Publishing

ISSN

0094-243X

Abstract

During our Swift/XRT program to obtain X-ray positions at arcsecond level for a sample of Galactic X-ray binaries, we discovered that SAX J0840.7+2248 is not a binary, but rather BeppoSAX/WFC+GRBM X-ray Rich GRB 980429. Here we report on this discovery and on the properties of this long, X-ray rich gamma-ray burst, from prompt to (very) late followup