SIMBAD references

1999A&A...342..496T - Astronomy and Astrophysics, volume 342, 496-501 (1999/2-2)

Spring, 1997 GRANAT/SIGMA observations of the Galactic Center: discovery of the X-ray nova GRS 1737-31.

TRUDOLYUBOV S., CHURAZOV E., GILFANOV M., REVNIVTSEV M., SUNYAEV R., KHAVENSON N., DYACHKOV A., TSERENIN I., VARGAS M., GOLDONI P., LAURENT P., PAUL J., JOURDAIN E., ROQUES J.-P., MANDROU P. and VEDRENNE G.

Abstract (from CDS):

The results of GRANAT/SIGMA hard X-ray observations of the Galactic center in March, 1997 are reported. One new source - GRS 1737-31 and two previously known sources - 1E 1740.7-2942 and GRO J1744-28 were detected. The spectral and temporal behavior of GRS 1737-31 suggests that this source may be a distant X-ray Nova and a black hole candidate. The comparison of the hard X-ray transient detection rates by GRANAT/SIGMA and currently operating all-sky monitors (CGRO/BATSE, GRANAT/WATCH) leads to following conclusions regarding the spatial and luminosity distributions of the hard X-ray transients: (i) the spatial distribution of X-ray Novae exhibits a concentration towards the Galactic Center similar to the distribution of the visible matter in the Galaxy. In particular, it is more concentrated than Galactic disk population. (ii) if hard X-ray transients follow distribution of visible mass in the Galaxy then their peak luminosity in the 35-150keV band is close to 1037erg/s with a relatively small scatter.

Abstract Copyright:

Journal keyword(s): stars: individual: 1E 1740.7-2942 - stars: individual: GRO J1744-28 - stars: individual: GRS 1737-31 - stars: novae, cataclysmic variables - gamma rays: observations - X-rays: stars

Simbad objects: 11

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