Following the recent re-brightening (ATel #2608) and RXTE-PCA detection of X-ray bursts from the peculiar X-ray binary Cir X-1 between May 15 and 25 (ATel #2643...
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PublicationSwift-XRT detects X-ray burst from Circinus X-1
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PublicationSwift/XRT follow-up and a refined position of the X-ray transient XTE J1728-295
Following the report of the newly detected outburst of the transient XTE J1728-295 (possibly IGR J17285-2922 detected by INTEGRAL) in the RXTE PCA bulge scans...
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PublicationThe cooling tail of a long X-ray burst from XTE J1701-407
Swift XRT observed the recently discovered source XTE J1701-407 (Markwardt et al., ATel #1569, Degenaar et al., ATel #1572) on July 17th, 2008 at UT 13:31:45...
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PublicationThe limit of mass for gravitational collapse and nuclear forces at short distance
On the basis of the current knowledge about the size of the neutron, the nucleon-nucleon interaction, and the limit on the ratio Gm/c2R < 4/9 imposed by General...
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PublicationThe Mass of the Neutron Star in CYG X-2 (V1341 CYG)
Cygnus X-2 is one of the brightest and longest known X-ray sources. We present high resolution optical spectroscopy of Cyg X-2 obtained over 4 years which gives...
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PublicationThe Mass of the X-ray Pulsar in X1822-371
We have computed the K-correction for emission lines formed on the irradiated face of the companion stars in X-ray binaries. Our results, combined with the...
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TalkThe Neutron Star Circus: Accretion Flows and Thermonuclear Bursts
Neutron stars in low-mass X-ray binaries (NS-LMXBs) are unique laboratories of accretion physics, strong gravity and ultra-dense matter. I will give an overview...
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PublicationThe neutron star transient SAX J1810.8-2609 going back to quiescence
We observed the neutron star transient SAX J1810.8-2609 with Swift-XRT on November 3rd and 5th, in order to follow its way to quiescence. The source was not...
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PublicationThe NIR counterpart to XTE J1747-274(=IGR J17473-2721)
We report follow-up observations confirming the near-infrared (NIR) counterpart to the X-ray transient XTE J1747-274/IGR J17473-2721 (ATEL #467, #498). A Ks=16...