Astrofísicas: Agujeros negros

  • Publicación
    Revisiting the fundamental parameters for the black hole X-ray transient Swift J1753.5–0127
    We present time-resolved Gran Telescopio Canarias optical spectroscopy and William Herschel Telescope i-band photometry of the X-ray transient SWIFT J1753.5...
  • Publicación
    Rotating ``black holes'' with holes in the horizon
    Kerr-Schild solutions of the Einstein-Maxwell field equations, containing semi-infinite axial singular lines, are investigated. It is shown that axial...
  • Publicación
    RXTE detects X-ray bursts from Circinus X-1
    After the recent report of X-ray re-brightening (ATel #2608), RXTE has observed the peculiar neutron star X-ray binary Cir X-1 eleven times during the last two...
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    Search for black holes and other new phenomena in high-multiplicity final states in proton-proton collisions at √{ s} = 13TeV
    A search for new physics in energetic, high-multiplicity final states has been performed using proton-proton collision data collected with the CMS detector at a...
  • Publicación
    Search for very high-energy gamma-ray emission from the microquasar Cygnus X-1 with the MAGIC telescopes
    The microquasar Cygnus X-1 displays the two typical soft and hard X-ray states of a black hole transient. During the latter, Cygnus X-1 shows a one-sided...
  • Publicación
    Simultaneous INTEGRAL, RXTE, Swift and FT South observations of the transition of GX 339-4
    As GX 339-4 has started to leave the Low/Hard State (ATel #2545), we triggered the 2nd part of our INTEGRAL campaign on GX 339-4 in the declining phase of the...
  • Publicación
    Simultaneous NICER and NuSTAR observations of the ultraluminous source NGC 4190 ULX-1
    Aims: We present an X-ray analysis of three different XMM-Newton observations together with simultaneous NICER and NuSTAR observations of the ultraluminous X...
  • Publicación
    Simultaneous X-ray and optical spectroscopy of V404 Cygni supports the multi-phase nature of X-ray binary accretion disc winds
    Observational signatures of accretion disc winds have been found in a significant number of low-mass X-ray binaries at either X-ray or optical wavelengths. The...
  • Publicación
    SOAR/Goodman Spectroscopic Assessment of Candidate Counterparts of the LIGO/Virgo Event GW190814
    On 2019 August 14 at 21:10:39 UTC, the LIGO/Virgo Collaboration (LVC) detected a possible neutron star-black hole merger (NSBH), the first ever identified. An...