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http://iopscience.iop.org/0004-637X/803/1/20/
is a link to the abstract of:
THE CHANGING FRACTIONS OF TYPE IA SUPERNOVA NUV–OPTICAL SUBCLASSES WITH REDSHIFT
Peter A. Milne, Ryan J. Foley Peter, J. Brown, and Gautham Narayan
Type Ia supernovae were considered to have fixed brightness, which allowed distance estimates of very distant objects. According to my understanding of this paper, the assumption of same brightness, the idea of 'a standard candle', may not hold as previously believed.
If this is correct, it means distance estimates of objects at huge distances may be incorrect, and that the distances may be overestimated. My take on this -- models dependent on distance estimates may have to change, for example: accelerating expansion based on this kind of observation of the Universe could be impacted.
Does anyone familiar with this area have a more clear understanding? Garth started a thread on this topic in early February, for example.
https://www.physicsforums.com/threads/type-ia-supernova-not-standard-candles-im-confused.795968/
is a link to the abstract of:
THE CHANGING FRACTIONS OF TYPE IA SUPERNOVA NUV–OPTICAL SUBCLASSES WITH REDSHIFT
Peter A. Milne, Ryan J. Foley Peter, J. Brown, and Gautham Narayan
Type Ia supernovae were considered to have fixed brightness, which allowed distance estimates of very distant objects. According to my understanding of this paper, the assumption of same brightness, the idea of 'a standard candle', may not hold as previously believed.
If this is correct, it means distance estimates of objects at huge distances may be incorrect, and that the distances may be overestimated. My take on this -- models dependent on distance estimates may have to change, for example: accelerating expansion based on this kind of observation of the Universe could be impacted.
Does anyone familiar with this area have a more clear understanding? Garth started a thread on this topic in early February, for example.
https://www.physicsforums.com/threads/type-ia-supernova-not-standard-candles-im-confused.795968/