GRB 221009A：被称为“波浪”暴走的伽玛射线脉冲
高能天体物理现象
2024-09-10 v1
摘要
我们对 Fermi 大范围望远镜（LAT）对 GRB 221009A（人类检测到的最亮伽玛暴）数据的完整分析进行了报告。该暴射电信号中检测到的高能（超过 30 MeV）辐射，在 1 秒前发生， precedes 了触发 Fermi 伽马射线暴监测器（GBM）的低能（小于 10 MeV）脉冲，这与其他 GRB 中观察到的现象一致。GRB 221009A 的提示相位持续了数百秒之久。由于其极其明亮，我们识别出了一个 64 秒的坏时间间隔（BTI），该间隔是由于硬 X 射线和软伽玛射线的极高能量流造成的，在该时间段内，事件重建效率较差，死时间比例较高。后期发射随时间呈幂律衰减，但对前 450 秒内的后期发射外推，表明辐射开始于提示相位。我们还发现，LAT 检测到的高能事件与单极辐射机制不相容，在提示相位期间，更可能与一种被认定为单极自颤辐射（SSC）的额外成分有关。一项在 GBM 触发后 33 千秒内由 LAT 检测到的显著 400 GeV 伽玛射线，方向上与 GRB 221009A 的位置一致，这难以解释为 SSC 或 TeV 电磁级联的产物，其来源所致的过程尚不确定。鉴于其接近及其强大的能量特性，GRB 221009A 是一个极其罕见的事件。
引用
@article{arxiv.2409.04580,
title = {GRB 221009A: the B.O.A.T Burst that Shines in Gamma Rays},
author = {M. Axelsson and M. Ajello and M. Arimoto and L. Baldini and J. Ballet and M. G. Baring and C. Bartolini and D. Bastieri and J. Becerra Gonzalez and R. Bellazzini and B. Berenji and E. Bissaldi and R. D. Blandford and R. Bonino and P. Bruel and S. Buson and R. A. Cameron and R. Caputo and P. A. Caraveo and E. Cavazzuti and C. C. Cheung and G. Chiaro and N. Cibrario and S. Ciprini and G. Cozzolongo and P. Cristarella Orestano and M. Crnogorcevic and A. Cuoco and S. Cutini and F. D'Ammando and S. De Gaetano and N. Di Lalla and A. Dinesh and R. Di Tria and L. Di Venere and A. Domínguez and S. J. Fegan and E. C. Ferrara and A. Fiori and A. Franckowiak and Y. Fukazawa and S. Funk and P. Fusco and G. Galanti and F. Gargano and C. Gasbarra and S. Germani and F. Giacchino and N. Giglietto and M. Giliberti and R. Gill and F. Giordano and M. Giroletti and J. Granot and D. Green and I. A. Grenier and S. Guiriec and M. Gustafsson and M. Hashizume and E. Hays and J. W. Hewitt and D. Horan and T. Kayanoki and M. Kuss and A. Laviron and J. Li and I. Liodakis and F. Longo and F. Loparco and L. Lorusso and B. Lott and M. N. Lovellette and P. Lubrano and S. Maldera and D. Malyshev and A. Manfreda and G. Martí-Devesa and R. Martinelli and I. Martinez Castellanos and M. N. Mazziotta and J. E. McEnery and I. Mereu and M. Meyer and P. F. Michelson and N. Mirabal and W. Mitthumsiri and T. Mizuno and P. Monti-Guarnieri and M. E. Monzani and T. Morishita and A. Morselli and I. V. Moskalenko and M. Negro and R. Niwa and N. Omodei and M. Orienti and E. Orlando and D. Paneque and G. Panzarini and M. Persic and M. Pesce-Rollins and V. Petrosian and R. Pillera and F. Piron and T. A. Porter and G. Principe and J. L. Racusin and S. Rainò and R. Rando and B. Rani and M. Razzano and S. Razzaque and A. Reimer and O. Reimer and F. Ryde and M. Sánchez-Conde and P. M. Saz Parkinson and D. Serini and C. Sgrò and V. Sharma and E. J. Siskind and G. Spandre and P. Spinelli and D. J. Suson and H. Tajima and D. Tak and J. B. Thayer and D. F. Torres and J. Valverde and G. Zaharijas and S. Lesage and M. S. Briggs and E. Burns and S. Bala and P. N. Bhat and W. H. Cleveland and S. Dalessi and C. de Barra and M. Gibby and M. M. Giles and R. Hamburg and B. A. Hristov and C. M. Hui and D. Kocevski and B. Mailyan and C. Malacaria and S. McBreen and S. Poolakkil and O. J. Roberts and L. Scotton and P. Veres and A. von Kienlin and C. A. Wilson-Hodge and J. Wood},
journal= {arXiv preprint arXiv:2409.04580},
year = {2024}
}
备注
60 pages, 38 figures, 9 tables