1997A&A...320L..37P


Query : 1997A&A...320L..37P

1997A&A...320L..37P - Astronomy and Astrophysics, volume 320, L37-40 (1997/4-2)

Rapid X-ray variability of the superluminal source GRS 1915+105.

PAUL B., AGRAWAL P.C., RAO A.R., VAHIA M.N., YADAV J.S., MARAR T.M.K., SEETHA S. and KASTURIRANGAN K.

Abstract (from CDS):

The superluminal X-ray transient source GRS 1915+105 was observed during July 20-29, 1996 with the Indian X-ray Astronomy Experiment (IXAE) on the Indian satellite IRS-P3 launched on March 21, 1996 from Shriharikota Range in India. During our observations covering the energy band 2-18keV, we have seen strong erratic intensity variations on time scale of 0.1s-10s. Quasi Periodic Oscillations (QPOs) in a frequency range of 0.62 to 0.82Hz were detected with a rms fraction of about 9%. The rapid X-ray intensity variations in GRS 1915+105 are similar to those observed in some other black hole binaries and thus provide further support for the hypothesis that this source is likely to be a black hole. We discuss the possible emission region and mechanism of the observed quasi-periodic oscillations. Comparing the observed QPOs with the ones observed in other neutron star and black-hole systems, we argue that GRS 1915+105 is possibly a black-hole.

Abstract Copyright:

Journal keyword(s): accretion, accretion disks - black hole physics - X-rays: stars - stars: individual: Granat 1915+105

Simbad objects: 6

goto View the references in ADS

Number of rows : 6
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 V* BQ Cam HXB 03 34 59.9116110096 +53 10 23.296879776   17.16 15.42 14.26 13.04 O8.5Ve 425 1
2 V* GU Mus HXB 11 26 26.5961559600 -68 40 32.877752952           K3V-K7V 687 1
3 V* BR Cir HXB 15 20 40.85 -57 10 00.1   21.4 21.4     ~ 744 1
4 V* V821 Ara HXB 17 02 49.3876391280 -48 47 23.087954544 16.20 16.30 15.5     ~ 1915 0
5 Granat 1915+105 HXB 19 15 11.55576 +10 56 44.9052           ~ 2432 0
6 HD 226868 HXB 19 58 21.6757355952 +35 12 05.784512688 9.38 9.72 8.91 8.42   O9.7Iabpvar 4090 0

To bookmark this query, right click on this link: simbad:objects in 1997A&A...320L..37P and select 'bookmark this link' or equivalent in the popup menu


2022.05.23-23:34:40

© Université de Strasbourg/CNRS

    • Contact