The X-ray burster SLX1732-304 in the globular cluster Terzan-1: Observations with the ART-P telescope on board the GRANAT observatory

Details The X-ray burster SLX1732-304 in the globular cluster Terzan-1: Observations with the ART-P telescope on board the GRANAT observatory The X-ray burster SLX1732-304 in the globular cluster Terzan-1: Observations with the ART-P telescope on board the GRANAT observatory

Mar 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995adspr..16q..95p&link_type=abstract

Advances in Space Research (ISSN 0273-1177), vol. 16, no. 3, p. 95-98

Astronomy and Astrophysics

Astronomy

8

Bursts, Globular Clusters, Granat Satellite, Image Processing, Stellar Luminosity, X Ray Sources, Black Body Radiation, Compton Effect, Energy Spectra, Field Of View, X Ray Astronomy, X Ray Telescopes

Scientific paper

Observations of the X-ray source SLX1732-304 in the globular cluster Terzan 1 were performed with a coded-mask X-ray telescope ART-P aboard the Granat observatory on Sept 8 and Oct 6, 1990. The ART-P telescope is able to obtain X-ray images in the 3-30 keV energy band and localized X-ray sources with the accuracy better than 1.5 arcmin. SLX1732-304 was associated with the global cluster Terzan 1 and recognized as an X-ray burster by a coded-mask telescope XRT aboard the SpaceLab-2 mission and the Hakucho observatory. According to ART-P flux and luminosity of SLX1732-304 in the 4-20 energy band were equal to Fx = 4.20 +/- 0.09) x 10-2 photons/sq cm/s and Lx = (6.1 +/- 0.2) x 1036 ergs/s (on Sept 8, 1990) and was Fx = (9.8 +/- 1.5) x 10-3 photons/sq cm/s and Lx = (1.68 +/- 0.30) x 1036 ergs/s (on Oct 6, 1990) respectively. On Sept 8, 1990 ART-P detected X-ray burst from SLX1732-304 with the maximum luminosity equal to Lx (5.0 +/- 0.2) x 1038 ergs/s in the 3-20 energy band.

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