Astrofísicas: Estrellas de neutrones

  • Publicación
    New outburst of the accreting-millisecond X-ray pulsar NGC 6440 X-2
    On Friday 19th, 2010 (19h 13m 26s UT), the RXTE galactic bulge scans detected a flux excess in the direction of the globular cluster NGC 6440. This globular...
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    New outbursts of two faint X-ray transients (GRS 1741.9-2853 and XMM J174457-2850.3) located in the Galactic center region
    The Galactic Center region was observed in a series of 7 pointings with the Chandra X-ray Observatory on 5 June 2005 01:44-13:08 UTC. During these observations...
  • Publicación
    Observational properties of accretion discs: Precessing and warped?
    Over the last 40 years, X-ray astronomy missions have revealed long-term, superorbital periods in a variety of X-ray binaries. These modulations can provide...
  • Publicación
    Observations of Cygnus X-2 with IUE: Ultraviolet results from a multiwavelength campaign
    The observations of the low-mass x ray binary, Cyg X-2, taken with the International Ultraviolet Explorer (IUE) in a campaign conducted in June and October of...
  • Publicación
    On the presence of two discs in the X-ray/Be binary A 0535 + 26/HDE 245770
    The analysis of the efficiency of accretion in the X-ray binary system A 0535 + 26/HDE 245770 and of the specific angular momentum of the matter accreted during...
  • Publicación
    Optical and hard X-ray detections of an outburst from Aquila X-1
    We report a new outburst from the neutron star X-ray transient Aquila X-1. Optical monitoring with the Faulkes Telescopes North and South show a rise above...
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    Optical and Near-IR Observations of the Current Outburst of Aql X-1
    As part of a monitoring campaign of quiescent and outbursting low-mass X-ray binaries with the CTIO/SMARTS telescopes and the Faulkes telescopes , we report...
  • Publicación
    Optical and NIR observations of XTE J1739-285
    We report optical and near-infrared (NIR) observations of the field containing the neutron star X-ray transient XTE J1739-285 (IAUC #7300, ATel #622). The...
  • Publicación
    Optical counterpart to IGR J17098-3628
    Following the recent report of a possible radio counterpart to the X-ray transient IGR J17098-3628 (ATEL #490), we re-investigated our Magellan I-band exposures...