SIMBAD references

1998A&A...329..186G - Astronomy and Astrophysics, volume 329186-189 (1998/1-1)

SIGMA observations of X-ray Nova Velorum 1993 (GRS 1009-45).

GOLDONI P., VARGAS M., GOLDWURM A., LAURENT P., ROQUES J.-P., JOURDAIN E., MALZAC J., VEDRENNE G., REVNIVTSEV M., CHURAZOV E., GILFANOV M., SUNYAEV R., DYACHKOV A., KHAVENSON N., TSERENIN I. and KULESHOVA N.

Abstract (from CDS):

We report on hard X-ray observations of X-ray Nova Velorum 1993 (GRS 1009-45) performed with the SIGMA coded mask X-ray telescope in January 1994. The source was clearly detected with a flux of about 60mCrab in the 40-150keV energy band during the two observations with a hard spectrum (α~-1.9) extending up to ∼150keV. These observations confirm the duration of the activity of the source in hard X-rays over 100 days after the first maximum and suggest a spectral hardening which has already been observed in Nova Muscae. These and other characteristics found in these observations strengthen the case for this Nova to be a black hole candidate similar to Nova Muscae.

Abstract Copyright: ∼

Journal keyword(s): Black hole physics - gamma rays: observations - novae - stars: individual: Nova Vel 1993 = GRS 1009-45

Simbad objects: 5

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