Gamma-Ray Burst Formation Rate Inferred from the Spectral Peak EnergyndashPeak Luminosity Relation
Astrophysical Journal Volume 609 Issue 2
Page 935-951
published_at 2004-06
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| File | |
| Title ( eng ) |
Gamma-Ray Burst Formation Rate Inferred from the Spectral Peak EnergyndashPeak Luminosity Relation
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| Creator |
Yonetoku D.
Murakami T.
Nakamura T.
Yamazaki Ryo
Inoue A.K.
Ioka K.
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| Source Title |
Astrophysical Journal
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| Volume | 609 |
| Issue | 2 |
| Start Page | 935 |
| End Page | 951 |
| Abstract |
We estimate a gamma-ray burst (GRB) formation rate based on the new relation between the spectral peak energy (Ep) and the peak luminosity. The new relation is derived by combining the data of Ep and the peak luminosities by BeppoSAX and BATSE, and it looks considerably tighter and more reliable than the relations suggested by the previous works. Using the new Ep-luminosity relation, we estimate redshifts of the 689 GRBs without known distances in the BATSE catalog and derive a GRB formation rate as a function of the redshift. For the redshift range of 0 ≤ z ≤ 2, the GRB formation rate increases and is well correlated with the star formation rate, while it keeps constant toward z ∼ 12. We also discuss the luminosity function and the redshift dependence of the intrinsic luminosity.
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| Keywords |
early universe
gamma rays
bursts
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| NDC |
Astronomy. Space sciences [ 440 ]
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| Language |
eng
|
| Resource Type | journal article |
| Publisher |
University of Chicago Press
|
| Date of Issued | 2004-06 |
| Rights |
Copyright (c) 2004 The American Astronomical Society.
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 0004-637X
[DOI] 10.1086/421285
[DOI] http://dx.doi.org/10.1086/421285
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