Astrofísicas: Estrellas de neutrones

  • Publicación
    Spectral transition of 4U 1608-522 during the undergoing 2010 outburst
    Following the SuperAGILE detection of an X-ray burst from the neutron star transient and atoll source 4U 1608-522 (ATel #2461), on 3 March 2010 at 06:33:25 UT...
  • Publicación
    Swift detects increased activity of the neutron star transient SAX J1750.8-2900
    After our report on the flux decay of the neutron star transient SAX J1750.8-2900 (ATel #1662) we have continued monitoring the source with Swift-XRT in order...
  • Publicación
    SWIFT J1749.4-2807: X-ray decay, refined position and optical observation
    We analyzed seven, target ID 31686, Swift follow-up observations of the neutron-star X-ray transient Swfit J1749.4-2807 (Wijnands et al. 2009) currently in...
  • Publicación
    Swift-XRT detects X-ray burst from Circinus X-1
    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...
  • Publicación
    Swift/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...
  • Publicación
    The 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...
  • Publicación
    The 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...
  • Publicación
    The 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...
  • Publicación
    The 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...