Chandra-NuSTAR Observations of Rapid, Luminous, and Blue Stellar Explosions

  • Margutti, Raffaella (PD/PI)

Project: Research project

Project Details


We propose an in-depth X-ray study of fast blue optical transients (FBOTs), a new class of transients with luminosities and time scales that challenge traditional SN models. Alternative scenarios include a failed SN of a stripped star, He-shell detonation on a white dwarf, and a SN shock breaking through a dense medium. FBOTs have mostly been studied in the optical/UV regime, which is of thermal origin and it is not sensitive to the nature of the underlying energy source. Here we propose to capitalize on our recent discovery of X-rays with unprecedented properties from the FBOTs AT2018cow and CSS161010, and start the first broad-band X-ray monitoring campaign of FBOTs. The primary goal is to test for the presence of engines driving the explosions and constrain their nature.
Effective start/end date1/11/211/10/23


  • Smithsonian Astrophysical Observatory (GO1-22062X//NAS8-03060)
  • National Aeronautics and Space Administration (GO1-22062X//NAS8-03060)


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