Why trust type Ia, as a standard candle?
A post that bystander made,
http://asterisk.apod.com/vie ... 31&t=18732
Which makes me think, How can we trust that what we see in a ''standard candle'' Type Ia supernovae be, what they seem to be?
''Chandrasekhar limit with a mass of at least 2.1 times that of our Sun - give or take 10%''.
''Type Ia points to dark energy
Cosmologists use Type Ia supernovae as 'standard candles' to measure distances to faraway galaxies because of their uniform intrinsic brightness. This, in turn, can be used to measure the expansion of the universe by observing the supernovae as they fade away''.
So yet again, something pointing to rules being broken. Which makes me wonder, if the speed of light can not keep up with expansion, How did the Dark Flow keep up with expansion? over six billion light years.
''Type Ia supernovae were therefore instrumental in inferring the presence of 'dark energy', when it was discovered that the expansion of the universe was accelerating rather than slowing down, as should have been the case if gravity were the only force influencing the evolution of the universe''.
If even the template of expansion based on the Type Ia supernovae where in question, How can we be sure about the things we think we know?
''According to Bart Pindor, a cosmologist from the University of Melbourne, in Australia, the findings highlight the need for care when accepting Type Ia supernovae as 'standard candles' for measuring the expansion of the universe''.
Did red shift confirm a standard candle that was questionable, and is now red shift at risk?
Thanks bystander. You made me go looking.