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Gamma-Ray Bursts are Produced Predominately in the Early Universe | | J. R. Lin
; S. N. Zhang
; T. P. Li
; | | Date: |
16 Nov 2003 | | Journal: | Astrophys.J. 605 (2004) 819-822 DOI: 10.1086/382503 | | Subject: | astro-ph | | Abstract: | It is known that some observed gamma-ray bursts (GRBs) are produced at cosmological distances and that the GRB production rate may follow the star formation rate. We model the BATSE-detected intensity distribution of long GRBs in order to determine their space density distribution and opening angle distribution. Our main results are: the lower and upper distance limits to the GRB production are z 0.24 and >10, respectively; the GRB opening angle follows an exponential distribution and the mean opening angle is about 0.03 radians; and the peak luminosity appears to be a better standard candle than the total energy of a GRB. | | Source: | arXiv, astro-ph/0311363 | | Services: | Forum | Review | PDF | Favorites | |
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