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A strong and broad Fe line in the XMM-Newton spectrum of the new X-ray transient and black hole candidate XTEJ1652-453
A strong and broad Fe line in the XMM-Newton spectrum of the new X-ray transient and black hole candidate XTEJ1652-453
- Source :
- Monthly Notices of the Royal Astronomical Society. 411(1):137-150
- Publication Year :
- 2011
-
Abstract
- We observed the new X-ray transient and black hole candidate XTEJ1652-453 simultaneously with XMM-Newton and the Rossi X-ray Timing Explorer (RXTE). The observation was done during the decay of the 2009 outburst, when XTEJ1652-453 was in the hard-intermediate state. The spectrum shows a strong and broad Fe emission line with an equivalent width of similar to 450 eV. The profile is consistent with that of a line being produced by reflection off the accretion disc, broadened by relativistic effects close to the black hole. The best-fitting inner radius of the accretion disc is similar to 4 gravitational radii. Assuming that the accretion disc is truncated at the radius of the innermost stable circular orbit, the black hole in XTEJ1652-453 has a spin parameter of similar to 0.5. The power spectrum of the RXTE observation has an additional variability component above 50 Hz, which is typical for the hard-intermediate state. No coherent quasi-periodic oscillations at low frequency are apparent in the power spectrum, which may imply that we view the system at a rather low inclination angle.
- Subjects :
- ACTIVE GALACTIC NUCLEI
Astrophysics::High Energy Astrophysical Phenomena
CYGNUS X-1
black hole physics
IRON-LINE
stars: individual: XTEJ1652-453
accretion discs
XTE J1650-500
INNER DISK
GX 339-4
X-rays: binaries
BINARIES
accretion
ACCRETION DISK
LOW/HARD STATE
Astrophysics::Earth and Planetary Astrophysics
PHOTON IMAGING CAMERA
Subjects
Details
- Language :
- English
- ISSN :
- 00358711
- Volume :
- 411
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Monthly Notices of the Royal Astronomical Society
- Accession number :
- edsair.dris...00893..0d0b5b9842f2bd231f9de49c2b2c6c69