NGC 2808 was observed with the Chandra X-ray Observatory and the Chandra Advanced CCD Imaging Spectrometer-Imager (ACIS-I) at its focus on 2007 June 19-21 (28...
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PublicationX-ray sources toward NGC 2808 (Servillat+, 2008)
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PublicationX-ray spectral variability of LINERs selected from the Palomar sample
Variability in active galactic nuclei (AGN) has been discovered at X-ray, UV, and radio frequencies on timescales from hours to years, being one of their most...
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PublicationX-ray spectral variability of low ionization nuclear emission line regions (LINERs)
Although variability is a general property of AGN, and in LINERs variations in timescales of months/years have been found for some objects, it is not clear how...
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PublicationX-ray spectral variability of low-mass X-ray binaries
The author reports on a study of the x-ray spectral variability of 37 low-mass x-ray binaries (LMXRB). The sample studied consists of all LMXRB which were...
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PublicationX-ray spectroscopy of faint X-ray background sources.
We present results on the X-ray spectral analysis of the XMM-Newton deep surveys on the Lockman Hole and Chandra Deep Field South fields. Using the results of...
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PublicationX-ray state change in 4U 1608-52
The neutron star X-ray transient 4U 1608-52 is often in a state of outburst (e.g. ATel #1113); the Swift/BAT light curve shows three clear outburst peaks so far...
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PublicationX-ray study of NGC 2451 A and B. (Huensch+ 2003)
The ROSAT X-ray observations were carried out at three different epochs between 1992 and 1996. Two PSPC (called "A" and "B") and one HRI ("H") observations were...
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PublicationX-Ray Transient in M31
IAUC 7291 available at Central Bureau for Astronomical Telegrams.
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PublicationX-Ray Transient in M32
IAUC 7498 available at Central Bureau for Astronomical Telegrams.