1998A&A...331L..25I


Query : 1998A&A...331L..25I

1998A&A...331L..25I - Astronomy and Astrophysics, volume 331L25-28 (1998/3-2)

Discovery of the X-ray transient SAX J1808.4-3658, a likely low-mass X-ray binary.

IN'T ZAND J.J.M., HEISE J., MULLER J.M., BAZZANO A., COCCHI M., NATALUCCI L. and UBERTINI P.

Abstract (from CDS):

We report the discovery of a fairly bright transient during observations with the Wide Field Cameras on board the BeppoSAX satellite in September 1996. It was detected at a peak intensity of 0.1Crab (2 to 10keV) and lasted between 6 and 40 days above a detection threshold of 2mCrab. Two very bright type I X-ray bursts were detected from this transient in the same observations. These almost certainly identify this X-ray transient as a low-mass X-ray binary with a neutron star as compact component. The double-peaked time history of both bursts at high energies suggests a peak luminosity close to the Eddington limit. Assuming this to be true implies a distance to this object of 4kpc.

Abstract Copyright: ∼

Journal keyword(s): stars: neutron, SAX J1808.4-3658 - X-rays: bursts

Simbad objects: 2

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Number of rows : 2
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026
#notes
1 SAX J1808.4-3658 LXB 18 08 27.58 -36 58 43.9           ~ 1051 0
2 V* V691 CrA LXB 18 25 46.8185061768 -37 06 18.529336656 14.30 15.20 15.1     ~ 461 0

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