Outburst, identification, and X-ray light curve of GS 1354 - 64 (= MX 1353 - 64?, Centaurus X-2?)

Details Outburst, identification, and X-ray light curve of GS 1354 - 64 (= MX 1353 - 64?, Centaurus X-2?) Outburst, identification, and X-ray light curve of GS 1354 - 64 (= MX 1353 - 64?, Centaurus X-2?)

Oct 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...361..590k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 361, Oct. 1, 1990, p. 590-595.

Astronomy and Astrophysics

Astronomy

24

Black Holes (Astronomy), Light Curve, Novae, X Ray Binaries, X Ray Sources, Charge Coupled Devices, X Ray Spectra

Scientific paper

This paper describes the optical identification and the X-ray light curve of an ultrashort transient X-ray source, GS 1354 - 64, discovered on February 13, 1987 by the All Sky Monitor (ASM) on onboard Ginga satellite. The data obtained by ASM are supplemented by data from the ESO 1-m Schmidt and the 1.54-m Danish telescopes, showing that the X-ray spectrum of the GS 1354 - 64 consists of two components: a disk blackbody spectrum with a temperature of 0.7 keV and a power-law component with a photon index of 2.1, which is one of the characteristics of the black hole candidates. It is shown that, although the position of the GS 1354 - 64 source is consistent with the positions of two X-ray outbursts, MX 1353 - 64 and Cen X-2, the characteristics of GS 1354 - 64 are markedly different from either of these sources.

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