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Contact: Paul Preuss
paul_preuss@lbl.gov
415-272-3253
DOE/Lawrence Berkeley National Laboratory

Many Type Ia Supernovae

Caption: Type Ia supernovae result from the explosions of white dwarf stars. These supernovae vary widely in peak brightness, how long they stay bright, and how they fade away, as the lower graph shows. Theoretical models (dashed black lines) seek to account for the differences, for example why faint supernovae fade quickly and bright supernovae fade slowly. A new analysis by the Nearby Supernova Factory indicates that when peak brightnesses are accounted for, as shown in the upper graph, the late-time behaviors of faint and bright supernovae provide solid evidence that the white dwarfs that caused the explosions had different masses, even though the resulting blasts are all "standard candles."

Credit: Nearby Supernova Factory, Lawrence Berkeley National Laboratory, Australian National University

Usage Restrictions: with credit as given

Related news release: Standard-candle supernovae are still standard, but why?


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