一种极软且极弱的快 X 射线瞬态事件关联 luminous 超新星
高能天体物理现象
2025-04-25 v1
摘要
长型伽玛射线Burst（LGRB），包括其子类低亮度伽玛射线Burst（LL-GRB）和X射线闪（XRF），这些现象以较低的光谱峰值能量为特征，已知与宽线型类型Ic超新星（SNe Ic-BL）相关联，这些超新星源于失去外部氢和氦包裹的巨质恒星的核坍缩。然而，由于对软X射线辐射的灵敏度有限，GRB/XRF人口的软、弱端仍然鲜有探索。本文报告了由Einstein Probe（EP）在软X射线波段检测到的一项快损X射线瞬态事件EP250108a，其红移为，随后进行了广泛的多波段观测。EP250108a的X射线亮度类似于XRF 060218，这是XRFs的原型，但它将GRB/XRF向前突破至前所未有的软、弱范畴，其和。同时，EP250108a被发现与SN 2025kg相关联，这是迄今为止最具灌注力且可能由磁星驱动的SNe Ic-BL检测到的超新星。对这一事件进行建模，优势样本的光度曲线支持其为轻度相对论外流所致。这一发现表明，EP凭借其独特能力，正在打开一扇通向巨质恒星死亡多样化结果的新观测窗口。
关键词
引用
@article{arxiv.2504.17034,
title = {An extremely soft and weak fast X-ray transient associated with a luminous supernova},
author = {W. -X. Li and Z. -P. Zhu and X. -Z. Zou and J. -J. Geng and L. -D. Liu and Y. -H. Wang and R. -Z. Li and D. Xu and H. Sun and X. -F. Wang and Y. -W. Yu and B. Zhang and X. -F. Wu and Y. Yang and A. V. Filippenko and X. -W. Liu and W. -M. Yuan and D. Aguado and J. An and T. An and D. A. H. Buckley and A. J. Castro-Tirado and S. -Y. Fu and J. P. U. Fynbo and D. A. Howell and J. -W. Hu and S. -Q. Jiang and A. Kumar and J. -R. Mao and J. R. Maund and X. Liu and B. Mockler and A. Moskvitin and M. Andrews and C. R. Bom and T. G. Brink and K. Chatterjee and Y. Chen and H. -Q. Cheng and J. Cooke and J. L. Dai and G. -W. Du and N. Erasmus and Y. Fang and J. Farah and V. Goranskij and M. Gritsevich and M. Gu and Z. Guo and E. Hsiao and Y. -D. Hu and Y. -L. Hua and W. Jacobson-Galán and S. -M. Jia and C. -C. Jin and M. M. Kasliwal and C. D. Kilpatrick and B. Kumar and W. -H. Lei and C. -K. Li and D. -Y. Li and L. -P. Li and Z. -X. Ling and Q. -C. Liu and Y. Liu and Y. -Q. Liu and A. López-Oramas and O. Maslennikova and C. McCully and I. Monageng and M. Newsone and E. Padilla Gonzalez and H. -W. Pan and H. -W. Peng and G. Pignata and F. Poidevin and S. B. Potter and I. Pérez-Fournon and L. Santana-Silva and A. Santos and C. -Y. Song and F. -F. Song and O. Spiridonova and N. -C. Sun and X. -J. Sun and G. Terreran and L. -Z. Wang and L. -F. Wang and B. -T. Wang and Z. -Y. Wang and G. -L. Wu and D. -F. Xiang and H. -F. Xiao and Y. -F. Xu and S. -J. Xue and S. -Y. Yan and Y. -P. Yang and L. -X. Yu and Y. -H. Zhang and Y. -H. Zhang and C. Zhang and J. -H. Zhang and J. -J. Zhang and W. Zheng and H. Zou},
journal= {arXiv preprint arXiv:2504.17034},
year = {2025}
}
备注
54 pages, 10 figures, submitted