AST-753intermediate

Type Ia Supernova Evidence: Physical Mechanisms

Type Ia supernovae can be standardized as distance indicators because their light-curve shape and color correlate with intrinsic luminosity. Standardized Type Ia supernovae map the recent expansion history, constrain dark-energy parameters, calibrate cosmological distances, and provide one leg of the local distance ladder.

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Type Ia Supernova Evidence: Physical Mechanisms

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Type Ia supernovae can be standardized as distance indicators because their light-curve shape and color correlate with intrinsic luminosity.

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An accelerating expansion changes the relationship between redshift and luminosity distance.

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Independent supernova teams found a consistent departure from matter-only decelerating models.