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20-100-keV properties of cataclysmic variables detected in the INTEGRAL/IBIS survey

Jul, 2006
9 pages
Published in:
  • Mon.Not.Roy.Astron.Soc. 372 (2006) 224-232
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Abstract: (arXiv)
Analysis of INTEGRAL/IBIS survey observations has revealed that the rare intermediate polar and asynchronous polar cataclysmic variables are consistently found to emit in the 20-100 keV energy band, whereas synchronous polars and the common non-magnetic CVs rarely do so. From the correlation of a candidate INTEGRAL/IBIS survey source list with a CV catalogue, 15 CV detections by IBIS have been established including a new INTEGRAL source IGR J06253+7334. The properties of these sources and 4 additional CV candidates are discussed in the context of their 20-100 keV emission characteristics and we conclude that the INTEGRAL mission is an important tool in the detection of new magnetic CV systems. Furthermore, analysis of the time-averaged spectra of CVs detected by INTEGRAL indicate that although there is little difference between the spectral slopes of the different sub-types, intermediate polars may be considerably more luminous than polars in the soft gamma-ray regime. We also present the detection of an unusual high-energy burst from V1223 Sgr discovered by inspection of the IBIS light-curve. Additionally, we have compared the IBIS and optical AAVSO light-curves of SS Cyg and extracted IBIS spectra during single periods of optical outburst and quiescence. We find that the 20-100 keV flux is an order of magnitude greater during optical quiescence. This is in agreement with previous studies which show that the hard X-ray component of SS Cyg is suppressed during high accretion states
  • surveys
  • novae cataclysmic variables
  • gamma-rays: observations
  • X-rays: binaries
  • [1]
    2] Halpern & Mirabal (2006)
    • Masetti
    • [1]
      (2006b)
      • Hartog
      • [1]
        3] den (2005)
        • Bikmaev
        • [1]
          4] (2006)
          • Bonnet-Bidaud
          • [1]
            5] (2001) [7] Ritter & Kolb (1998)
            • Martino
            • [1]
              6] de (2001)
              • Araujo-Betancor
              • [1]
                10] (2003) [12] Berriman (1987)
                • Staude
                • [1]
                  11] (2003)
                  • Kuiper
                  • [1]
                    13] (2006)
                    • Mukai
                    • [1]
                      14] (2006) [16] Haberl, Motch & Zickgraf (2002)
                      • Masetti
                      • [1]
                        15] (2006a)
                        • Martino
                        • [1]
                          17] de (2006)
                          • Gänsicke
                          • [1]
                            18] (2005) [20] Hernanz & Sala (2002)
                            • Buckley
                            • [1]
                              19] (1995) [23] Geckeler & Staubert (1997)
                              • Watson
                              • [1]
                                22] (1995) [25] Thorstensen & Taylor (2001)
                                • Motch
                                • [1]
                                  24] (1996)
                                  • Bonnet-Bidaud
                                  • [1]
                                    26] (2006)
                                    • Friend
                                    • [1]
                                      27] (1990) P=polar
                                      • Harrison