Cosmological X-Ray Flashes in the Off-Axis Jet Model
The Astrophysical Journal Volume 593 Issue 2
Page 941-945
published_at 2003-10
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| File | |
| Title ( eng ) |
Cosmological X-Ray Flashes in the Off-Axis Jet Model
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| Creator |
Yamazaki Ryo
Ioka Kunihito
Nakamura Takashi
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| Source Title |
The Astrophysical Journal
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| Volume | 593 |
| Issue | 2 |
| Start Page | 941 |
| End Page | 945 |
| Abstract |
The &angl0;V/Vmax&angr0; of the cosmological X-ray flashes detected by the Wide Field Cameras on BeppoSAX is calculated theoretically in a simple jet model. The total emission energy from the jet is assumed to be constant. We find that if the jet opening half-angle is smaller than 0.03 radian, the theoretical &angl0;V/Vmax&angr0; for fixed opening half-angle is less than ∼0.4, which is consistent with the recently reported observational value of 0.27 ± 0.16 at the 1 σ level. This suggests that the off-axis gamma-ray burst jet with the small opening half-angle at the cosmological distance can be identified as the cosmological X-ray flash.
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| Keywords |
gamma rays
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| NDC |
Astronomy. Space sciences [ 440 ]
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| Language |
eng
|
| Resource Type | journal article |
| Publisher |
Chicago University Press
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| Date of Issued | 2003-10 |
| Rights |
Copyright (c) 2003 The American Astronomical Society
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 0004-637X
[DOI] 10.1086/376677
[DOI] http://dx.doi.org/10.1086/376677
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