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| Miscellaneous :
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Ibarra et al. 2008 ATel 1397:
- INTEGRAL, XMM and Rosat source probably associated
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Landi et al. 2008 ATel 1437:
- Swift/XRT observation
- Two optical objects in XRT error box
- X-ray spectrum fitted by the combination of
two power law of similar indices (Gamma~0.6), one being absorbed by the
Galactic column density only, the other by higher absorption with
Nh~6.7e22 cm-2.
- XRT image here (courtesy R. Landi)
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Masetti et al. 2008 ATel 1620:
- Balmer (up to Hδ at least), HeI and HeII emission lines at z=0,
superimposed on a rather blue continuum.
- Spectral characteristics of the source=>Galactic Cataclysmic
Variable.
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| Masetti et al. 2009 :
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Tomsick et al. 2009 :
- Chandra observations
- Chandra spectrum well represented by single power law
- NH=0.11 x 1022
cm-2, Γ=-0.28
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Nichelli et al. 2009ATel 2354 :
- Periodic signal at ~830.7 in a Swift observation
- Re-analysis of Chandra archival observation => strong signal at about 1660s.
- True period of the source is 1660s,
a pulsed fraction ~50%.
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Bernardini et al. 2012 (A&A):
- Multi-wavelengths observations
- Source is an IP
- Pulse and orbital periods = 831s (2ω), 6.3-8.7 hr
- Broad band spectral analysis
- MWD~0.96 Msun at d~610 pc
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Thornstensen & Halpern 2013 (ApJ):
- Optical observations => V=16.9 +-0.2
- Results consistent with previous ones => Blue continuum, double peaked Hα emission line
- Periodicity (radial profile) at 91.9 minutes (but not entirely reliable) that might be the orb. period.
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