Wednesday, March 4, 2015

oscillations in the expansion history

the age of the Universe is estimated from the inverse Hubble constant, i.e. from the current expansion speed. imagine now that the Universe underwent a series of expansion and contraction phases such that we would underestimate the Universe's true age from the Hubble constant. would there still be ways of figuring out the true age?

1 comment:

  1. I think one would need to determine the age of very old objects like low-mass stars, but from the inverse Hubble constant alone this would not be possible. only in the case that one has a working model for oscillations one could infer the age of the Universe by integrating over the inverse Hubble function.

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