Swift uncovers that SAX J0840.7+2248 is not a X-ray Binary, but BeppoSAX X-ray Rich GRB980429

Details Swift uncovers that SAX J0840.7+2248 is not a X-ray Binary, but BeppoSAX X-ray Rich GRB980429 Swift uncovers that SAX J0840.7+2248 is not a X-ray Binary, but BeppoSAX X-ray Rich GRB980429

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007atel.1089....1s&link_type=abstract

The Astronomer's Telegram, #1089

Astronomy and Astrophysics

Astronomy

1

Optical, X-Ray, Gamma Ray, Binaries, Gamma-Ray Bursts, Transients

Scientific paper

The transient source SAX J0840.7+2248 has recently been observed by Swift/XRT and UVOT for a total of 10.6ks on May 29 00:35:49 to 23:21:57 UT. The Swift/XRT data show no X-ray counterpart within the BeppoSAX/ WFC position error circle of 3 arcmin radius centered on RA,Decl(J2000)=08h 40m 40s, +22d 48m 18s (Heise et al., 1998, IAUC 6892). A 3sigma upper limit on a source within the SAX error box can be placed at 4.5E-14 erg cm-2 s-1 (for a spectrum of photon index 2, no intrinsic absorption, and a Galactic Hydrogen column of NH=(3.45)10^+20 cm-2).

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