Publication type: Non-refereed

  • Publication
    X-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...
  • Publication
    X-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...
  • Publication
    X-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...
  • Publication
    X-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...
  • Publication
    X-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...
  • Publication
    X-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...
  • Publication
    X-Ray Transient in M31
    IAUC 7291 available at Central Bureau for Astronomical Telegrams.
  • Publication
    X-Ray Transient in M32
    IAUC 7498 available at Central Bureau for Astronomical Telegrams.
  • Publication
    X-ray Transients in M31
    A bright X-ray transient in M31 was detected in a 5000-sec Chandra ACIS-I observation on 2001 Aug 31.54 UT. The new transient (CXOU J004305.5+411703) is located...