Home > Astronomy, General Astronomy, Supernovae, White Dwarves > Rapidly Rotating White Dwarf Stars Can Solve The Missing Companion Problem For Type IA Supernovae

Rapidly Rotating White Dwarf Stars Can Solve The Missing Companion Problem For Type IA Supernovae


The research group of Izumi Hachisu (The University of Tokyo), Mariko Kato (Keio University) and Ken’ichi Nomoto (Kavli IPMU, The Univiersity of Tokyo) discovered that a Type Ia supernova occurs after its companion star evolves into a faint helium white dwarf in many cases, given the fact that the white dwarf is spinning in the progenitor system.

Supernovae are brilliant explosions of stars. Among them, Type Ia supernovae have been used as “standard candles”, which has led to the discovery of the accelerating expansion of the Universe. Type Ia supernovae are also important to study as they are the main producer of iron group elements in the Universe.

Some recent observations have provided indications of the progenitor binary star systems just before the explosions.

Full Story: http://www.ipmu.jp/node/1369

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