Using Gamma Ray Bursts as standard candles

Using Gamma Ray Bursts as standard candles ››: Standard candles are sources of set luminosity by which cosmological distances are calculated. At the moment, Type 1a supernovae are the best ones up to a certain distance, because we can accurately measure their intensity and the way it tails off and easily calculate how far away they are within certain boundaries of error. Distances beyond redshift 1 are hard to work out though. Now Ghirlanda and co-workers have found a way to determine the energy of a gamma ray burst so that distances up to redshift 10 can be approximated.; [Permalink…07-Nov-04…Deserving memes…]

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