GRB 241030A：挑战前冲发射的明亮尾后glow
高能天体物理现象
2026-03-20 v1
摘要
伽马射线暴 GRB 241030A（z = 1.411） exhibited 类似 GRB 221009A 的明亮尾后glow，被检测覆盖 gamma 射线、X 射线、紫外与光学波段，为探讨伽马射线暴尾后glow 物理提供了探针。我们编译了从一次到一周不等的时间段后的多波段观测数据，通过统一的光度测量管道处理数据。我们分别对观测数据进行解析性分析和贝叶斯推断，并使用两个独立模型。我们的模型假设尾后glow 发生源于后侧结构喷流的强前冲，可能还包含来自同步自复辐射（SSC）散射的贡献。我们的模型成功复现 X 射线至光学的数据，倾向于喷流向常数密度星际介质传播，且观察角度位于喷流核心内。在两个分析中，我们发现需要的模型参数值相对于标准理论的预期值而言极为严苛。特别是，我们的结果暗示尽管初始能量较为温和，喷流拥有极高的动能，从而导致尾后发射极其低效。此外，喷流在加速粒子方面效率低下，电子和磁能分数较低，导致显著的 SSC 发射。我们的分析表明，喷流具有较大的开口角并在高密度介质中传播。如果尾后glow 确实由强前冲背后的辐射驱动，我们的结果将 GRB 241030A 置于一类特征为极高动能、较大喷流开口角和极低尾后发射效率的 GRB 子类中，伴随强烈的 SSC 辐射。这些预测与其他 GRB 的常规预期难以调和。因此，我们建议 GRB 241030A 的尾后glow 可能不完全由前冲发射驱动。
引用
@article{arxiv.2603.18956,
title = {GRB 241030A: a bright afterglow challenging forward shock emission},
author = {J. -G. Ducoin and C. Pellouin and V. Aivazyan and D. Akl and F. Alvarez and C. Andrade and C. Angulo and S. Antier and J. -L. Atteia and S. Basa and R. L. Becerra and Z. Benkhaldoun and E. Bissaldi and A. Breeveld and E. de. Bruin and E. Burns and N. R. Butler and M. W. Coughlin and F. Daigne and T. Dietrich and D. Dornic and C. Douzet and T. du Laz and P. -A. Duverne and H. B. Eggenstein and E. Elhosseiny and A. Esamdin and P. A. Evans and J. F. Agüí Fernández and M. Ferro and F. Fortin and M. Freeberg and L. García-García and R. Gill and N. Globus and N. Guessoum and G. M. Hamed and P. Hello and A. Holzmann Airasca and D. F. Hu and T. Hussenot-Desenonges and R. Inasaridze and A. Iskandar and S. Q. Jiang and C. C. Jin and A. Kaeouach and S. Karpov and N. J. Klingler and A. Klotz and N. Kochiashvili and H. Koehn and R. Kneip and T. Kvernadze and A. Le Calloch and W. H. Lee and A. Lekic and Y. F. Liang and C. Limonta and J. Liu and K. Ocelotl. C. López and D. López-Cámara and R. H. Mabrouk and F. Magnani and J. Mao and M. Mašek and E. Moreno Méndez and B. M. Mihov and M. Molham and K. Noysena and M. Odeh and N. Omodei and H. Peng and M. Pereyra and M. Pillas and R. Pillera and T. Pradier and Y. Rajabov and N. A. Rakotondrainibe and B. Schneider and M. Serrau and L. Slavcheva-Mihova and O. Sokoliuk and H. Sun and A. Takey and M. Tanasan and K. S. Tinyanont and D. Turpin and A. de Ugarte Postigo and B. T. Wang and L. T. Wang and X. F. Wang and Z. M. Wang and A. M. Watson and H. Z. Wu and Q. Y. Wu and J. J. Xu and Y. S. Yan and H. N. Yang and W. Yuan and H. S. Zhao},
journal= {arXiv preprint arXiv:2603.18956},
year = {2026}
}