1998A&A...329..186G

Query : 1998A&A...329..186G

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

goto View the references in ADS

Number of rows : 5
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 V* V518 Per HXB 04 21 42.7227473352 +32 54 26.939156184           M4.5V 670 0
2 1A 0620-00 HXB 06 22 44.5423857312 -00 20 44.290460544           K3V-K7V 1144 0
3 V* MM Vel HXB 10 13 36.3431303106 -45 04 31.128938218           G5V-M0V 211 1
4 V* GU Mus HXB 11 26 26.5961559600 -68 40 32.877752952           K3V-K7V 734 1
5 V* QZ Vul HXB 20 02 49.5220407111 +25 14 10.631666444           K3V-K6V 432 0

To bookmark this query, right click on this link: simbad:objects in 1998A&A...329..186G and select 'bookmark this link' or equivalent in the popup menu