• MAXI/GSC 7-Year High and Low Galactic Latitude Source Catalog (3MAXI) (13 Apr 2021)
    This catalog of 221 low galactic latitude X-ray sources and 686 high galactic latitude X-ray sources detected by the MAXI Gas Slit Camera (GSC) in its first 7 years of operations (combining Hori et al. 2018, ApJS, 207, 36 and Kawamuro et al. 2018, ApJS, 238, 33) is now available in Browse and Xamin.
  • NICER Finds X-ray Boosts in the Crab Pulsar's Radio Bursts (08 Apr 2021)
    A global science collaboration using data from NASA's Neutron star Interior Composition Explorer (NICER) telescope has discovered X-ray surges accompanying radio bursts from the pulsar in the Crab Nebula. The finding shows that these giant radio pulses release far more energy than previously suspected.
  • NICER follow-up of SRGA J181414.6-225604 (08 Apr 2021)
    NICER followup observations of a possible new X-ray transient discovered by the SRG observatory detected a source showing a peak in soft X-rays and a hard non-thermal tail at higher energies. No evidence for temporal variability was seen.
  • Viewing tool updated (07 Apr 2021)
    The Swift pole constraints have been updated in the Viewing tool. The revised coefficients extrapolate the trend for the next two years.
  • NICER Virtual Data Analysis and Science Meeting: Registration Open (31 Mar 2021)
    Registration is now open for a virtual data analysis workshop, which will be held the week of May 10, 2021, on Monday, Tuesday, Thursday and Friday, 9 am to 1 pm. You can register using the workshop registration form.
  • NICER and Swift observations of the new outburst of MAXI J1820+070 (30 Mar 2021)
    NICER and Swift observations of the black hole X-ray transient MAXI J1820+070 near the start of its outburst found an X-ray luminosity of only 1e33 ergs/s. This is one of the lowest luminosities at which the start of a black hole-X-ray transient outburst has been caught in X-rays.