Astrophysical: Black holes

  • Publication
    Optical Observations of GX 339-4 in Outburst with the Faulkes Telescope South
    Further to ATel #2455 (see also ATels #2380, #2384) detailing recent INTEGRAL observations of the 2010 outburst of the black hole candidate transient source GX...
  • Publication
    Optical observations of the X-ray Transient XTE J1118+480
    Time resolved (40-sec resolution, ~6-hours per night), R-band photometry of the outbursting black hole candidate XTE J1118+480 (ATEL #383) was obtained with the...
  • Publication
    Optical Outburst of the Halo Black Hole X-ray Transient XTE J1118+480
    We report the discovery of a new outburst of the black hole X-ray transient XTE J1118+480 (IAUC #7418, ATEL#64, #67). Observations carried out with the 0.8m...
  • Publication
    Optical photometry and polarimetry of GX 339-4 during its outburst rise
    GX 339-4 is currently brightening at X-ray, UV, optical and radio frequencies (ATel #1945, #1954, #1960). Our monitoring campaign with the Faulkes Telescope...
  • Publication
    Optical photometry of SWIFT J1753.5-0127 following its X-ray brightening
    In ATel #1599; Krimm et al. report a gradual brightening and softening of SWIFT J1753.5-0127's X-ray emission, using the SWIFT satellite on June 30, 2008. We...
  • Publication
    Optical re-brightening of the black hole binary XTE J1859+226
    Observations of the black hole binary XTE J1859+226 revealed an unexpected optical re-brightening. Images were taken with the Nordic Optical Telescope (NOT)...
  • Publication
    Optical re-brightening of the black hole transient XTE J1752-223
    We observed the black hole candidate XTE J1752-223 (ATel #2258) with the William Herschel Telescope (WHT) and the ACAM imager/spectrograph at the Observatorio...
  • Publication
    Optical Spectroscopy of Candidates in the LIGO/Virgo Binary Merger Error Boxes
    We performed optical spectroscopy of the candidates inside the gravitational wave errorboxes (S190408an, S190425z, S190426c, S190510g, S190728q, S190814bv). The...
  • Publication
    Optical Spectroscopy of SWIFT J1753.5-0127
    Spectra of the optical counterpart to the gamma ray source SWIFT J1753.5-0127 (ATEL #546,#547,#549,#550) were acquired on 2005 July 3th 03:52-09:48 UT with the...