Audience: Undergraduate

  • News
    A lower limit to the accretion disc radius in the active galactic nucleus NGC 1052
    Low-luminosity active galactic nuclei (LLAGNs) are found in about 1/3 of all the galaxies in the Local Universe, establishing the most numerous class of AGNs...
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    A nearby transiting rocky exoplanet that is suitable for atmospheric investigation
    We detect a transiting rocky planet with an orbital period of 1.467 days around the nearby red dwarf star Gliese 486. The planet Gliese 486 b is 2.81 Earth...
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    A new stellar site for the formation of very heavy elements
    The recently discovered phosphorus-rich stars pose a challenge to stellar evolution and nucleosynthesis (that is, the formation of chemical elements in stellar...
  • News
    A nonlinear damping mechanism for waves in the solar corona
    The solar coronal heating problem originated almost 80 years ago and remains unsolved. A plausible explanation lies in mechanisms based on magnetic wave energy...
  • News
    A novel black hole mass scaling relation
    The confirmation of the existence of black holes is one of the most basic results in astrophysics. There is a wide range of masses of black holes, from those...
  • News
    A Plague of Magnetic Spots Among the Hot Stars of Globular Clusters
    For more than six decades, the quest to understand the formation of hot (about 20,000−30,000 K) extreme horizontal branch (EHB) stars in Galactic globular...
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    A planetesimal orbiting within the debris disc around a white dwarf star
    Numerous exoplanets have been detected around Sun-like stars. These stars end their lives as white dwarfs, which should inherit any surviving planetary systems...
  • News
    A shared accretion instability for black holes and neutron stars
    Accretion disks around compact objects are expected to enter an unstable phase at high luminosity. One instability may occur when the radiation pressure...
  • News
    A stellar stream remnant of a globular cluster below the metallicity floor
    Stellar ejecta gradually enrich the gas out of which subsequent stars form, making the least chemically enriched stellar systems direct fossils of structures...