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Geminga |
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Geminga [′jem·iŋ·gə] (astronomy) A relatively nearby neutron star, about 150 parsecs (450 light-years) distant, that emits pulsed x-rays and gamma rays (making it an x-ray and gamma-ray pulsar), steady optical radiation, and possible unconfirmed radio and optical pulsations. The term is derived from Gemini gamma-ray source. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The rapidly rotating remnant of a supernova explosion from 300,000 years ago, Geminga acts like a lighthouse beacon, regularly beaming radiation toward Earth. Wang notes that his findings, presented at the American Astronomical Society meeting in January, argue against the proposal that a single, relatively close supernova called Geminga created the Local Bubble (SN: 1/2/93, p. The pulsar Geminga now has a competitor for the title of nearest known pulsar to Earth. |
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