A 12.4-day periodicity in a close binary system after a supernova

文献类型： 外文期刊

第一作者： Chen, Ping

作者： Chen, Ping;Gal-Yam, Avishay;Ofek, Eran O.;Katz, Boaz;Kushnir, Doron;Waxman, Eli;Zackay, Barak;Irani, Ido;Sharon, Amir;Strotjohann, Nora L.;Sollerman, Jesper;Yang, Sheng;Schulze, Steve;Post, Richard S.;Liu, Chang;Miller, Adam A.;Liu, Chang;Miller, Adam A.;Das, Kaustav K.;Kasliwal, Mansi M.;Kulkarni, Shri R.;Yao, Yuhan;Fremling, Christoffer;Dekany, Richard;Riddle, Reed L.;Yan, Lin;Fremling, Christoffer;Drake, Andrew J.;Jegou du Laz, Theophile;Neill, James D.;Qin, Yu-Jing;Horesh, Assaf;Liu, Dezi;Liu, Xiangkun;Fang, Yuan;Liu, Xiaowei;Rose, Kovi;Yang, Sheng;Bellm, Eric C.;Fynbo, Johan P. U.;Fynbo, Johan P. U.;Groom, Steven L.;Helou, George;Wold, Avery;Mazzali, Paolo A.;Mazzali, Paolo A.

作者机构：

期刊名称：NATURE （ 影响因子：64.8； 五年影响因子：60.9 ）

ISSN： 0028-0836

年卷期： 2024 年 625 卷 7994 期

页码：

收录情况： SCI

摘要： Neutron stars and stellar-mass black holes are the remnants of massive star explosions1. Most massive stars reside in close binary systems2, and the interplay between the companion star and the newly formed compact object has been theoretically explored3, but signatures for binarity or evidence for the formation of a compact object during a supernova explosion are still lacking. Here we report a stripped-envelope supernova, SN 2022jli, which shows 12.4-day periodic undulations during the declining light curve. Narrow H alpha emission is detected in late-time spectra with concordant periodic velocity shifts, probably arising from hydrogen gas stripped from a companion and accreted onto the compact remnant. A new Fermi-LAT gamma-ray source is temporally and positionally consistent with SN 2022jli. The observed properties of SN 2022jli, including periodic undulations in the optical light curve, coherent H alpha emission shifting and evidence for association with a gamma-ray source, point to the explosion of a massive star in a binary system leaving behind a bound compact remnant. Mass accretion from the companion star onto the compact object powers the light curve of the supernova and generates the gamma-ray emission.

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