Quote:
Originally Posted by Jerry
Distribution of 56Ni Yields for Type Ia Supernovae and Implications for Their Progenitors
Bo Wang1,2 ⋆, Xiang-Cun Meng1,2, Xiao-Feng Wang3,4 and Zhan-Wen Han1
Broadening the expected absolute absolute magnitude range of supernova Ia explosions greatly increased the probability that the most distant events we observe are very bright.
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Jerry. I'm not so sure the tacit assumption that an order of magnitude increase of nickel holds here. Once again, the relative distribution of ejecta is not isotropic (which would lead to spherical remnants), but polar preferential(which leads to prolate spheroids seen in the radio maps at Molonglo.).So, the expectation that more nickel seen from this viewing angle means more nickel seen over the entire fireball is not true. The galactic alignment of most progenitors due to galactic magnetic fields, which bears watching with Cepheids' pulsations too, means a viewing angle correction may be necessary.
pete