Circumbinary Discs as the Origin of Circumstellar Material around Interacting H-poor Supernovae and Fast Blue Optical Transients

Ryotaro Chiba, Semih Tuna, Brian D. Metzger +1

Around 10 % of hydrogen-poor supernovae explode inside compact ($\sim 10^{15}$ cm), massive ($\sim 0.1{\mathrm{M}}_{\odot }$) circumstellar material (CSM), signalling an episode of e…