X-ray observation of XTE J2012+381 during the 1998 outburst

Naik, S. ; Agrawal, P. C. ; Paul, B. ; Rao, A. R. ; Seetha, S. ; Kasturirangan, K. (2000) X-ray observation of XTE J2012+381 during the 1998 outburst Journal of Astrophysics and Astronomy, 21 (1-2). pp. 29-38. ISSN 0250-6335

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Official URL: http://www.ias.ac.in/jarch/jaa/21/29-38.pdf

Related URL: http://dx.doi.org/10.1007/BF02702260


The outburst of X-ray transient source XTE J2012+381 was detected by the RXTE All-Sky Monitor on 1998 May 24th. Following the outburst, X-ray observations of the source were made in the 2-18 keV energy band with the Pointed Proportional Counters of the Indian X-ray Astronomy Experiment (IXAE) on-board the Indian satellite IRS-P3 during 1998 June 2nd-10th. The X-ray flux of the source in the main outburst decreased exponentially during the period of observation. No large amplitude short-term variability in the intensity is detected from the source. The power density spectrum obtained from the timing analysis of the data shows no indication of any quasi-periodic oscillations in 0.002-0.5 Hz band. The hardness ratio i.e. the ratio of counts in 6-18 keV to 2-6 keV band, indicates that the X-ray spectrum is soft with spectral index > 2. From the similarities of the X-ray properties with those of other black hole transients, we conclude that the X-ray transient XTE J2012+381 is likely to be a black hole.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:Accretion; Accretion Disks; Black Hole Physics; X-rays: Stars- stars: Individual- XTE J2012+381
ID Code:16583
Deposited On:15 Nov 2010 09:30
Last Modified:17 May 2016 01:19

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