The Prolonged Death of Light from Type Ia Supernovae http://bit.ly/1oE5QHI
New supernova observations reveal extended brightness, could help researchers better understand invaluable cosmology tool.
Three years after its explosion, a type Ia supernova continues to shine brighter than expected, new research finds. The observations, made with the Hubble Space Telescope and published today in The Astrophysical Journal, suggest that the powerful explosions produce an abundance of a heavy form of cobalt that gives the heat from nuclear decay an extra energy boost.
The work could help researchers pinpoint the parents of type Ia supernovae–a type of stellar explosion that is frequently used to measure distances to faraway galaxies–and reveal the mechanics behind these explosions.AMNH researchers make a discovery about the chemical composition of Type Ia supernovae, which may aid in the understanding of how these stars explode—and become the “standard candles” by which we measure the distance of far-off galaxies.
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