File:KSC-04-S-00399 (ksc 121704 pulsar).webm
KSC-04-S-00399_(ksc_121704_pulsar).webm (WebM audio/video file, VP9/Opus, length 1 min 40 s, 320 × 212 pixels, 219 kbps overall, file size: 2.6 MB)
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DescriptionKSC-04-S-00399 (ksc 121704 pulsar).webm |
English: Investigating pulsar 3C58 leaves scientists out in the cold. Keywords: Chandra x-ray observatory, pulsars, supernova, neutron stars, cooling, nuclear forces, cosmic magnetism, 3C58 Astronomers with NASA's Chandra X-ray Observatory have found a pulsating star that's too cool to be believed. The object they discovered is a type of neutron star called a pulsar. Pulsars spin and flash radiation like the spinning lights found on a police car. Understanding how pulsars function could help explain how nuclear forces and magnetism work in our universe. Pulsar 3C58 should have a temperature of about 1.5 million degrees Celsius. However, new readings from Chandra show the star's temperature to be 500,000 degrees cooler than expected. Pulsars form following the supernova explosion of a once-healthy star. The explosion triggers a compression of protons and electrons inside the star's core. The result is a core dense with neutrons and even tinier neutrinos. The neutrinos escape the center, removing heat-energy and cooling the star. Why 3C58 is cooling so rapidly is unknown by scientists. One possible theory suggests the core contains an unusually high number of surviving protons or exotic subatomic particles. One thing's for certain: Chandra is hot on the answer's trail. |
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Date | Taken on 21 December 2004 | ||
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Author | NASA Kennedy Space Center | ||
Keywords InfoField | Chandra_x-ray_observatory; supernova; cooling; nuclear_forces; 3C58; neutron_stars; cosmic_magnetism; pulsars |
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This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) | ||
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current | 16:28, 7 May 2024 | 1 min 40 s, 320 × 212 (2.6 MB) | OptimusPrimeBot (talk | contribs) | Imported media from http://images-assets.nasa.gov/video/ksc_121704_pulsar/ksc_121704_pulsar~orig.mp4 |
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Short title | Pulsar 3C58 is Too Cool 12-17-04 |
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Copyright holder | 2004 |
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