Accretion disc cooling and narrow absorption lines in the tidal disruption event AT 2019dsg

@article{Cannizzaro2020AccretionDC,
  title={Accretion disc cooling and narrow absorption lines in the tidal disruption event AT 2019dsg},
  author={Giacomo Cannizzaro and Thomas Wevers and Peter G. Jonker and Miguel 'Angel P'erez-Torres and Javier Moldon and D. Mata-S{\'a}nchez and Giorgos Leloudas and Dheeraj R. Pasham and Seppo Mattila and Iair Arcavi and K Decker French and Francesca Onori and Cosimo Inserra and Matt Nicholl and Mariusz Gromadzki and T.-W. Chen and Tom{\'a}s E. M{\"u}ller-Bravo and P Short and Joseph P. Anderson and David R. Young and Keith C. Gendreau and Zaven Arzoumanian and M. L{\"o}wenstein and Ronald A. Remillard and Rupak Roy and Daichi Hiramatsu},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2020}
}
We present the results of a large multi-wavelength follow-up campaign of the Tidal Disruption Event (TDE) \dsg, focusing on low to high resolution optical spectroscopy, X-ray, and radio observations. The galaxy hosts a super massive black hole of mass $\rm (5.4\pm3.2)\times10^6\,M_\odot$ and careful analysis finds no evidence for the presence of an Active Galactic Nucleus, instead the TDE host galaxy shows narrow optical emission lines that likely arise from star formation activity. The… Expand
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A tidal disruption event (TDE) involves the tidal shredding of a star in the vicinity of a dormant supermassive black hole. The nearby (≈230 mega-parsec) radio-quiet (radio luminosity of 4 × 10 ergExpand
Theoretical interpretation of the observed neutrino emission from Tidal Disruption Events
The observation of a neutrino at IceCube in association with the Tidal Disruption Event (TDE) AT2019dsg, has suggested TDEs as a new class of sources of astrophysical neutrinos. We present a model ofExpand
Tidal Disruption Events and High-Energy Neutrinos
Tidal Disruption Events (TDEs) occur when stars pass close to supermassive black holes, and have long been predicted to emit cosmic rays and neutrinos. Recently the TDE AT2109dsg was identified inExpand

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