Astrofísicas: Púlsares

  • Publicación
    Detection of the Geminga pulsar at energies down to 20 GeV with the LST-1 of CTAO
    Context. Geminga is the third gamma-ray pulsar firmly detected by imaging atmospheric Cherenkov telescopes (IACTs) after the Crab and the Vela pulsars. Most of...
  • Publicación
    Detection of the Geminga pulsar with MAGIC hints at a power-law tail emission beyond 15 GeV
    We report the detection of pulsed gamma-ray emission from the Geminga pulsar (PSR J0633+1746) between 15 GeV and 75 GeV. This is the first time a middle-aged...
  • Publicación
    Discovery of a 205.89 Hz Accreting Millisecond X-ray Pulsar in the Globular Cluster NGC 6440
    We report on the discovery of the second accreting millisecond X-ray pulsar (AMXP) in the globular cluster NGC 6440. Pulsations with a frequency of 205.89 Hz...
  • Publicación
    Discovery of a Second Transient Low-Mass X-ray Binary in the Globular Cluster Ngc 6440
    We have discovered a new transient low-mass X-ray binary, NGC 6440 X-2, with Chandra/ACIS, RXTE/PCA, and Swift/XRT observations of the globular cluster NGC 6440...
  • Publicación
    Discovery of an Accreting Millisecond Pulsar in the Eclipsing Binary System SWIFT J1749.4-2807
    We report on the discovery and the timing analysis of the first eclipsing accretion-powered millisecond X-ray pulsar (AMXP): SWIFT J1749.4-2807. The neutron...
  • Publicación
    Discovery of burst oscillations near the spin frequency in the intermittent accreting millisecond pulsar HETE J1900.1-2455
    RXTE observations of the intermittent accreting millisecond X-ray pulsar HETE J1900.1-2455 (Kaaret et al. 2006 ApJ 638, 963; Galloway et al. 2007 ApJ 654, L73)...
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    Discovery of kilohertz QPOs in RXTE observations of SAX J1748.9-2021.
    We report on RXTE observations of the ongoing outburst of the accreting millisecond X-ray pulsar SAX J1748.9-2021 (Altamirano et al. 2008, 674, 45A, see ATEL...
  • Publicación
    Discovery of Kilohertz Quasi-periodic Oscillations and Shifted Frequency Correlations in the Accreting Millisecond Pulsar XTE J1807-294
    We report the discovery of twin kilohertz quasi-periodic oscillations (kHz QPOs) in the X-ray flux of XTE J1807-294, the fourth accreting millisecond pulsar...
  • Publicación
    Discovery of slow X-ray pulsations in the high-mass X-ray binary 4U 2206+54
    Context: The source 4U 2206+54 is one of the most enigmatic high-mass X-ray binaries. In spite of intensive searches, X-ray pulsations have not been detected in...