Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-01-28
Astronomy and Astrophysics
Astrophysics
Accepted in A&A as a Research Note. 4 pages, 4 figures
Scientific paper
10.1051/0004-6361:20079027
Aims. We report the discovery of a peculiar object observed serendipitously with XMM-Newton. We present its timing and spectral properties and investigate its optical counterpart. Methods. The light curve of the X-ray source, its spectrum, and the spectrum of the best optical counterpart are presented and analyzed. Results. The X-ray flux decreases by a factor of 6.5 within 1 h and stays in a low state for at least 10 h, thereby suggesting the presence of an eclipse. The spectrum is very soft, a power law with a slope of Gamma~2.8, and does not change significantly before and after the flux drop. The source is spatially coincident within few arc-seconds with a Seyfert~2 galaxy belonging to a galaxy pair. Conclusions. Although the background AGN seems the best counterpart, neither the temporal nor the spectral properties of the X-ray source are compatible with it. We investigate the possibility of having a foreground low-mass X-ray binary in quiescence, where the companion is not detected in the optical wavelength.
Altieri Bruno
Carpano S.
King Andrew R.
Leisy Pierre
Nucita Achille A.
No associations
LandOfFree
XMMU J134736.6+173403: an eclipsing LMXB in quiescence or a peculiar AGN? does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with XMMU J134736.6+173403: an eclipsing LMXB in quiescence or a peculiar AGN?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and XMMU J134736.6+173403: an eclipsing LMXB in quiescence or a peculiar AGN? will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-156824