New X-ray sources near the Galactic bulge region

Details New X-ray sources near the Galactic bulge region New X-ray sources near the Galactic bulge region

Dec 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990pasj...42l..83y&link_type=abstract

Astronomical Society of Japan, Publications (ISSN 0004-6264), vol. 42, no. 6, 1990, p. L83-L91.

Astronomy and Astrophysics

Astronomy

10

Galactic Bulge, X Ray Binaries, X Ray Sources, X Ray Spectra, Absorption Spectra, Black Holes (Astronomy), Pulsars

Scientific paper

Nine new X-ray sources were discovered by the Ginga satellite during survey observations near the Galactic bulge region. Seven of the sources were found to have a hardness ratio similar to that of low-mass binary X-ray sources (LMXBs). One source has a hard spectrum with large low-energy absorption similar to that of X-ray pulsars. The other source, GS 1734-275, was found to be variable over a long time. It also exhibited an unusually soft spectrum, and, hence, could be a potential candidate for a black-hole binary. It was also found that the Exosat new source, GPS 1742-326, has a typical LMXB spectrum.

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