超新星炮喷出脉冲星J0002
(原标题: Supernova Cannon Expels Pulsar J0002)
2022-10-02
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什么能像炮弹一样射出中子星？一颗超新星。大约1万年前，产生星云遗迹CTB 1的超新星不仅摧毁了一颗大质量恒星，还将其新形成的中子星核心——脉冲星——炸向银河系。这颗脉冲星每秒旋转8.7次，是通过可下载的软件Einstein@Home搜索美国宇航局轨道上的费米伽马射线天文台拍摄的数据发现的。脉冲星PSR J0002+6216（简称J0002）已经以每秒1000公里的速度离开了超新星遗迹CTB 1，它的速度甚至足以离开我们的银河系。在照片中，脉冲星的轨迹延伸到超新星遗迹的左下方。这幅特色图像结合了VLA和DRAO射电天文台的射电图像，以及美国宇航局轨道IRAS红外天文台存档的数据。众所周知，超新星可以起到大炮的作用，甚至脉冲星也可以起到炮弹的作用——但我们不知道超新星是如何做到的。
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What could shoot out a neutron star like a cannon ball? A supernova. About 10,000 years ago, the supernova that created the nebular remnant CTB 1 not only destroyed a massive star but blasted its newly formed neutron star core -- a pulsar -- out into the Milky Way Galaxy. The pulsar, spinning 8.7 times a second, was discovered using downloadable software Einstein@Home searching through data taken by NASA's orbiting Fermi Gamma-Ray Observatory. Traveling over 1,000 kilometers per second, the pulsar PSR J0002+6216 (J0002 for short) has already left the supernova remnant CTB 1, and is even fast enough to leave our Galaxy. Pictured, the trail of the pulsar is visible extending to the lower left of the supernova remnant. The featured image is a combination of radio images from the VLA and DRAO radio observatories, as well as data archived from NASA's orbiting IRAS infrared observatory. It is well known that supernovas can act as cannons, and even that pulsars can act as cannonballs -- what is not known is how supernovas do it.