A common envelope jets supernova (CEJSN) impostor scenario for fast blue optical transients

Understand

I propose a new scenario, the polar common envelope jets supernova (CEJSN) impostor scenario, to account for AT2018cow-like fast blue optical transients (FBOTs).

• The polar CEJSN impostor scenario evolves through four main phases.
• (1) A red supergiant (RSG) star expands to tidally interact with a neutron star (NS) companion (or a black hole).
• The interaction increases the RSG mass loss rate to form a circumstellar matter (CSM) halo to ~0.1pc.