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論文・著書情報
| タイトル |
| 和文: | |
| 英文: | FREGATE observation of a strong burst from SGR1900+14 |
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| 著者 |
| 和文: |
Olive, J.-F.,
Hurley, K.,
Dezalay, J.-P.,
Atteia, J.-L.,
Barraud, C.,
Butler, N.,
Crew, G. B.,
Doty, J.,
Ricker, G.,
Vanderspek, R.,
Lamb, D. Q.,
河合 誠之,
Yoshida, A.,
Shirasaki, Y.,
Sakamoto, T.,
Tamagawa, T.,
Torii, K.,
Matsuoka, M.,
Fenimore, E. E.,
Galassi, M.,
Tavenner, T.,
Donaghy, T. Q.,
Graziani, C. ..
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| 英文: |
Olive, J.-F.,
Hurley, K.,
Dezalay, J.-P.,
Atteia, J.-L.,
Barraud, C.,
Butler, N.,
Crew, G. B.,
Doty, J.,
Ricker, G.,
Vanderspek, R.,
Lamb, D. Q.,
Kawai, N.,
Yoshida, A.,
Shirasaki, Y.,
Sakamoto, T.,
Tamagawa, T.,
Torii, K.,
Matsuoka, M.,
Fenimore, E. E.,
Galassi, M.,
Tavenner, T.,
Donaghy, T. Q.,
Graziani, C. ..
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| 言語 |
English |
| 掲載誌/書名 |
| 和文: | |
| 英文: | Gamma-Ray Burst and Afterglow Astronomy 2001: A Workshop Celebrating the First Year of the HETE Mission |
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巻, 号, ページ
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Vol. 662
pp. 82-87
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| 出版年月 |
2003年4月 |
| 出版者 |
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| 会議名称 |
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| 開催地 |
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| アブストラクト |
After a long period of quiescence, the soft gamma repeater SGR1900+14 was suddenly reactivated on April 2001. On July 2nd 2001, a bright flare emitted by this source triggerred the WXM and FREGATE instruments onboard the HETE-2 satellite. Unlike typical short (~ 0.1 s) and spiky SGRs recurrent bursts, this event features a 4.1 s long main peak, with a sharp rise (~ 50 ms) and a slower cutoff (~ 250 ms). This main peak is followed by a ~ 2 sec decreasing tail. We found no evidence of any precursor or any extended `afterglow' tail to this burst. We present the preliminary spectral fits of the total emission of this flare as observed by the FREGATE instrument between 7 and 150 keV. The best fit is obtained with a model consisting of two blackbody components of temperatures 4.15 keV and 10.4 keV. A thermal bremsstrahlung can not be fitted to this spectrum. We compare these features and the burst energetics with the other strong or giant flares from SGR1900+14. |
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