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This Radio Wave Mystery Changed Astronomy

2025/2/26
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Short Wave

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Jocelyn Bell Burnell
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Jocelyn Bell Burnell: 我于1967年发现了第一个脉冲星,这项发现彻底改变了天文学领域。我的研究始于使用射电望远镜观测宇宙中的无线电波,特别是来自类星体。在数据分析过程中,我发现了一个奇怪的重复信号,经过仔细研究,我意识到它来自一种新型天体——脉冲星。脉冲星是快速旋转的中子星,其强大的磁场会发出周期性的无线电波脉冲。这项发现不仅证实了中子星的存在,也为我们研究宇宙提供了新的工具和视角。我的职业生涯并非一帆风顺,由于婚姻和家庭原因,我不得不多次更换工作地点,这使得我的职业生涯变得不稳定。但脉冲星的发现成为了我职业生涯中最重要的成就,它帮助我克服了许多困难,并让我在多个天文学领域取得了成功。如今,脉冲星被广泛应用于测量宇宙距离、寻找引力波和系外行星等研究中,它的发现意义深远,并且未来还有更多值得探索的领域。 Regina Barber: 本期节目讲述了Jocelyn Bell Burnell博士的故事,以及她如何通过发现脉冲星彻底改变了天文学领域。她的发现不仅证实了中子星的存在,还为我们研究宇宙提供了新的工具和视角,例如测量宇宙距离,寻找引力波和系外行星。 Anthony Hewish: (虽然访谈中没有Anthony Hewish的直接引语,但可以推测他的观点) 作为Jocelyn Bell Burnell的导师,我见证了她发现脉冲星的全过程。起初我对她的发现持怀疑态度,但最终被她提供的证据所折服。她的发现是天文学领域的一项重大突破,我为她的成就感到骄傲。尽管诺贝尔奖授予了我,但我认为Jocelyn Bell Burnell也应该获得同样的荣誉,因为这项发现主要归功于她的辛勤工作和敏锐的观察力。

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This chapter explores the life cycle of stars, focusing on the different fates of massive and smaller stars. It explains how smaller stars, bigger than our sun, can collapse into neutron stars, which are composed of neutrons created by the compression of protons and electrons during the explosion. The chapter also describes the characteristics of neutron stars, such as their size, rapid spinning, and strong magnetic fields.
  • Massive stars explode and may collapse into black holes.
  • Smaller stars (bigger than our sun) collapse into neutron stars.
  • Neutron stars are composed mainly of neutrons, created by the compression of protons and electrons.
  • A neutron star is about 10 miles across, spins rapidly, and has a strong magnetic field.

Shownotes Transcript

In 1967 Jocelyn Bell Burnell made a discovery that revolutionized the field of astronomy. She detected the radio signals emitted by certain dying stars called pulsars. This encore episode: Jocelyn's story. Host Regina G. Barber) talks to Jocelyn about her winding career, her discovery and how pulsars are pushing forward the field of astronomy today.*Have cosmic queries and unearthly musings? Contact us at [email protected]). We might open an intergalactic case file and reveal our findings in a future episode.**Listen to every episode of Short Wave sponsor-free and support our work at NPR by signing up for Short Wave+ at plus.npr.org/shortwave).*Learn more about sponsor message choices: podcastchoices.com/adchoices)NPR Privacy Policy)