BeppoSAX observation of the transient X-ray pulsar GS 1843+00

Authors
Piraino, S Santangelo, A Segreto, A Giarrusso, S Cusumano, G Del Sordo, S Robba, NR Dal Fiume, D Orlandini, M Oosterbroek, T Parmar, AN
Citation
S. Piraino et al., BeppoSAX observation of the transient X-ray pulsar GS 1843+00, ASTRON ASTR, 357(2), 2000, pp. 501-506
Citations number
32
Categorie Soggetti
Space Sciences
Journal title
ASTRONOMY AND ASTROPHYSICS
ISSN journal
00046361 → ACNP
Volume
357
Issue
2
Year of publication
2000
Pages
501 - 506
Database
ISI
SICI code
0004-6361(200005)357:2<501:BOOTTX>2.0.ZU;2-6
Abstract
We present the results from both the timing and spectroscopic analysis of t he transient X-ray pulsar GS 1843+00 observed by the BeppoSAX satellite on 1997 April 4, when the source was at a luminosity of similar to 10(37) erg s(-1). GS 1843+00 shows a very hard spectrum that is well fitted by an abso rbed power law (N-H similar to 2.3 x 10(22) cm(-2)) modified by a high ener gy cut-off above 6 keV. The source shows a small pulse amplitude in the who le energy band. The pulse profile evolves with energy from a double-peaked to single-peaked shape. The barycentric pulse period is 29.477 +/- 0.001 s.