AT2018kzr: the merger of an oxygen-neon white dwarf and a neutron star or black hole

@inproceedings{Gillanders2020AT2018kzrTM,
  title={AT2018kzr: the merger of an oxygen-neon white dwarf and a neutron star or black hole},
  author={J. Gillanders and S. Sim and S. Smartt},
  year={2020}
}
  • J. Gillanders, S. Sim, S. Smartt
  • Published 2020
  • Physics
  • We present detailed spectroscopic analysis of the extraordinarily fast-evolving transient AT2018kzr. The transient’s observed lightcurve showed a rapid decline rate, comparable to the kilonova AT2017gfo. We calculate a self-consistent sequence of radiative transfer models (using tardis) and determine that the ejecta material is dominated by intermediate-mass elements (O, Mg and Si), with a photospheric velocity of ∼ 12000–14500 km s−1. The early spectra have the unusual combination of being… CONTINUE READING

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