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Are Electron Capture Supernovae Similar to Type IIp (Core Collapse) Supernovae?

-- Rex | October 6, 2020

"Engine-driven" supernova explosion with accretion disk and high-velocity jets.

Question:

Are electron-capture supernovae similar to type IIp (core collapse) supernovae when observed?

-- Rex

Answer:

The following is extracted from the introductory information on electron-capture supernovae (ECSNe) provided in Jones etal. (2016). ECSNe are caused by a degenerate oxygen-neon (ONe) core which collapses to form a neutron star. If the supernova is from a single star, a type IIP or IIn-P supernova would be produced with a luminosity less than or equal to a standard type IIP SNe. It is likely, though, that the progenitor stars of ECSNe have a binary companion, which makes it possible for ECSNe to produce SNe of type Ib/c, depending upon the degree of stripping by the companion star.

-- Jeff Mangum

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