Giant Flare of SGR 1806-20 from a Relativistic Jet
Journal of Physics : Conference Series Volume 31 Issue 1
Page 99-102
published_at 2006-05-22
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| File | |
| Title ( eng ) |
Giant Flare of SGR 1806-20 from a Relativistic Jet
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| Creator |
Yamazaki Ryo
Ioka Kunihito
Takahara Fumio
Shibazaki Noriaki
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| Source Title |
Journal of Physics : Conference Series
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| Volume | 31 |
| Issue | 1 |
| Start Page | 99 |
| End Page | 102 |
| Abstract |
Japanese magnetospheric explorer GEOTAIL recorded a detailed light curve during the initial 600 msec of a giant flare from SGR 1806-20 on December 27, 2004. We show that the observed light curve is well explained by an emission from relativistically expanding fireballs, like those of gamma-ray bursts (GRBs). Especially, the observed rapid fading after 500 msec suggests that ejecta is collimated in a jet. We derive an upper limit on the jet opening half-angle of 0.2 radian that is as narrow as those of GRBs.
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| Keywords |
gamma rays
theory - stars
neutron - stars
pulsars
individual (SGR 1806-20) -ISM
jets and outflows
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| NDC |
Astronomy. Space sciences [ 440 ]
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| Language |
eng
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| Resource Type | conference paper |
| Publisher |
IOP
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| Date of Issued | 2006-05-22 |
| Publish Type | Author’s Original |
| Access Rights | open access |
| Source Identifier |
[ISSN] 1742-6588
[DOI] 10.1088/1742-6596/31/1/016
[DOI] http://dx.doi.org/10.1088/1742-6596/31/1/016
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