EP251023a: A fast X-ray transient featuring a magnetar-powered optical internal plateau followed by a steep decay

EP251023a is an extragalactic fast X-ray transient (eFXT) that was only detected by the Einstein Probe (EP) and that lacks a gamma-ray counterpart. The prompt emission consisted of a main emission with a duration T90 = 292 ± 19 s, followed by a long-lasting tail emission that persisted until the obs...

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Main Authors:	Jiang S.-Q., Xu D., Lei W.-H., An J., Zou Y.-C., Zhu Z.-P., Chornock R., Svinkin D., Li W.-X., Fernández-García E., Wu Y., Zhang W.-D., Fynbo J. P. U., Fu S.-Y., Liu X., He L.-B., Andrews M., Castro-Tirado A. J., Farah J. R., Frederiks D., Gritsevich M., Howell D. A., Hu D.-F., Lysenko A. L., Maury A., McCully C., Pandey S. B., Pérez-García I., Ridnaia A., Tsvetkova A., Ulanov M., Wu S.-Y., Wynn K., Xiong D.-R., Yang H.-N., Zhang B.-B., Zhao T.
Format:	Artigo
Language:	Inglês
Published:	EDP Sciences 2026-09-01
Series:	Astronomy & Astrophysics
Subjects:	gamma-ray burst: general stars: magnetars x-rays: bursts x-rays: individuals: ep251023a
Online Access:	https://www.aanda.org/articles/aa/full_html/2026/09/aa61547-26/aa61547-26.html
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