在超新星发生后,一个密切的二进制系统中的12.4天周期
Ping Chen1, Avishay Gal-Yam2, Jesper Sollerman3
1Department of Particle Physics and Astrophysics, Weizmann Institute of Science, Rehovot, Israel. chen.ping@weizmann.ac.il.
Nature
|January 10, 2024
概括
天文学家观察到超新星SN 2022jli,揭示了周期性的光变和排放. 这表明双星系中的一颗大质量恒星爆炸,
科学领域:
- 天文学与天体物理学
- 恒星进化
- 超新星
背景情况:
- 中子星和恒星质量的黑洞是由巨大的恒星爆炸所形成的.
- 巨大的恒星通常存在于二进制星系中,但在二进制星系中,紧物体形成的直接证据很少.
研究的目的:
- 为了研究超新星SN 2022jli的性质.
- 在超新星残骸中寻找二元和紧物体形成的痕迹.
主要方法:
- 对SN 2022jli进行光度监测,以检测光曲线的变化.
- 晚期排放的光谱分析,包括Hα.
- 与费米-LAT的马射线源数据的相关性.
主要成果:
- 在下降光线曲线上出现了12.4天的周期性波动.
- 晚期的光谱显示了狭窄的Hα发射与周期性的速度变化,表明积累到一个紧的残留物.
- 一个新的费米-LAT马射线源与SN 2022jli的位置和时间一致.
结论:
- 观察到的属性强烈地表明SN 2022jli是二进制星系中一颗巨大的恒星的产物.
- 这颗紧的残骸正在从它的伴侣身上获得质量,
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