Bibcode
DOI
Natalucci, L.; Cornelisse, R.; Bazzano, A.; Cocchi, M.; Ubertini, P.; Heise, J.; in 't Zand, J. J. M.; Kuulkers, E.
Referencia bibliográfica
The Astrophysical Journal, Volume 523, Issue 1, pp. L45-L49.
Fecha de publicación:
9
1999
Revista
Número de citas
26
Número de citas referidas
19
Descripción
We have analyzed in detail the discovery measurements of the X-ray
burster SAX J1750.8-2900 by the Wide Field Cameras on board BeppoSAX in
spring 1997, at a position ~1.2d off the Galactic center. The source was
in outburst on March 13 when the first observation started and showed
X-ray emission for ~2 weeks. A total of nine bursts were detected, with
peak intensities varying from ~0.4 to 1.0 crab in the 2-10 keV range.
Most bursts showed a fast rise time (~1 s), an exponential decay profile
with e-folding time of ~5 s, spectral softening during decay, and a
spectrum which is consistent with few keV blackbody radiation. These
features identify them as type I X-ray bursts of thermonuclear origin.
The presence of type I bursts and the source position close to the
Galactic center favors the classification of this object as a neutron
star low-mass X-ray binary. X-ray emission from SAX J1750.8-2900 was not
detected in the previous and subsequent Galactic bulge monitoring, and
the source was never seen bursting again.