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standard candles

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White Dwarf Detonation

Exploding diamonds in the sky

Pakmor et al. propose a new mechanism to make Type 1a supernova explosions from a pair of white dwarfs.

A Tale Of Two Stars: Early Results From The Type Ia Supernova SN2011fe (Part I)

Those watching the sky in August may have heard the news that a new star had appeared: the type Ia supernova PTF11kly (later rechristened SN2011fe) had touched off in M101, the Pinwheel Galaxy, a bare 6.4 Mpc away; close enough that for a brief period the supernova was visible to anyone with a good pair of binoculars. As the closest recent type Ia observed, astronomers were able to use it to place the first direct observational constraints on the progenitor of a type Ia supernova.

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