What can gamma ray bursts teach us about dark energy?

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It has been suggested that Gamma Ray Bursts (GRB) may enable the expansion rate of our Universe to be measured out to very high redshifts (z {approx}> 5) just as type Ia supernovae have done at z {approx} 1-1.5. We explore this possibility here, and find that GRB have the potential to detect dark energy at high statistical significance, but they are unlikely to be competitive with future supernovae missions, such as SNAP, in measuring the properties of the dark energy. The exception to this conclusion is if there is appreciable dark energy at early times, in which case the ... continued below

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5 pages

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Hooper, Dan; /Fermilab; Dodelson, Scott & /Fermilab /Chicago U., Astron. Astrophys. Ctr. December 1, 2005.

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Description

It has been suggested that Gamma Ray Bursts (GRB) may enable the expansion rate of our Universe to be measured out to very high redshifts (z {approx}> 5) just as type Ia supernovae have done at z {approx} 1-1.5. We explore this possibility here, and find that GRB have the potential to detect dark energy at high statistical significance, but they are unlikely to be competitive with future supernovae missions, such as SNAP, in measuring the properties of the dark energy. The exception to this conclusion is if there is appreciable dark energy at early times, in which case the information from GRB's will provide an excellent complement to the z {approx} 1 information from supernovae.

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5 pages

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  • Journal Name: Astropart.Phys.27:113-118,2007

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  • Report No.: FERMILAB-PUB-05-532-A
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 878920
  • Archival Resource Key: ark:/67531/metadc874131

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  • December 1, 2005

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  • Sept. 21, 2016, 2:29 a.m.

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  • Dec. 2, 2016, 6:25 p.m.

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Hooper, Dan; /Fermilab; Dodelson, Scott & /Fermilab /Chicago U., Astron. Astrophys. Ctr. What can gamma ray bursts teach us about dark energy?, article, December 1, 2005; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc874131/: accessed August 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.