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Archive for November 6th, 2012


Tuesday, November 6, 2012

The White Widow Model: A New Scenario for the Birth of Type Ia Supernovae

Supernova remnant 0509-67.5 was searched for a left-behind partner star without success. (NASA)

Supernova remnant 0509-67.5 was searched for a left-behind partner star without success. (NASA)

J. Craig Wheeler has studied the exploding stars called supernovae for more than four decades. Now he has a new idea on the identity of the “parents” of one of the most important types of supernovae — the Type Ia, those used as “standard candles” in cosmology studies that led to the discovery of dark energy, the mysterious force causing the universe’s expansion to speed up.

Wheeler lays out
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