Publications

  • A shared accretion instability for black holes and neutron stars

    Accretion disks around compact objects are expected to enter an unstable phase at high luminosity1. One instability may occur when the radiation pressure generated by accretion modifies the disk viscosity, resulting in the cyclic depletion and refilling of the inner disk on short timescales2. Such a scenario, however, has only been quantitatively

    Vincentelli, F. M. et al.

    Advertised on:

    3
    2023
  • Euclid: Testing the Copernican principle with next-generation surveys

    Context. The Copernican principle, the notion that we are not at a special location in the Universe, is one of the cornerstones of modern cosmology. Its violation would invalidate the Friedmann-Lemaître-Robertson-Walker metric, causing a major change in our understanding of the Universe. Thus, it is of fundamental importance to perform

    Camarena, D. et al.

    Advertised on:

    3
    2023
  • Evidence for globular cluster collapse after a dwarf-dwarf merger: A potential nuclear star cluster in formation

    Direct observational evidence for the creation of nuclear star clusters (NSCs) is needed to support the proposed scenarios for their formation. We analysed the dwarf galaxy UGC 7346, located in the peripheral regions of the Virgo Cluster, to highlight a series of properties that indicate the formation of a NSC caught in its earlier stages. First

    Román, J. et al.

    Advertised on:

    3
    2023
  • Gaia-ESO survey: Massive stars in the Carina Nebula. I. A new census of OB stars

    Context. The Carina Nebula is one of the major massive star-forming regions in the Galaxy. Its relatively nearby distance (2.35 kpc) makes it an ideal laboratory for the study of massive star formation, structure, and evolution, both for individual stars and stellar systems. Thanks to the high-quality spectra provided by the Gaia-ESO survey and the

    Berlanas, S. R. et al.

    Advertised on:

    3
    2023
  • Hint of an exocomet transit in the CHEOPS light curve of HD 172555

    HD 172555 is a young (~20 Myr) A7V star surrounded by a 10 au wide debris disk suspected to be replenished partly by collisions between large planetesimals. Small evaporating transiting bodies, that is exocomets, have also been detected in this system by spectroscopy. After β Pictoris, this is another example of a system possibly witnessing a phase

    Kiefer, F. et al.

    Advertised on:

    3
    2023
  • MAGIC observations provide compelling evidence of hadronic multi-TeV emission from the putative PeVatron SNR G106.3+2.7

    Context. Certain types of supernova remnants (SNRs) in our Galaxy are assumed to be PeVatrons, capable of accelerating cosmic rays (CRs) to ~ PeV energies. However, conclusive observational evidence for this has not yet been found. The SNR G106.3+2.7, detected at 1-100 TeV energies by different γ-ray facilities, is one of the most promising

    MAGIC Collaboration et al.

    Advertised on:

    3
    2023