{"id":26115,"date":"2024-08-23T04:56:26","date_gmt":"2024-08-23T04:56:26","guid":{"rendered":"http:\/\/finn-family.com\/?p=26115"},"modified":"2024-08-23T04:56:26","modified_gmt":"2024-08-23T04:56:26","slug":"supernova-remnant-cta-1","status":"publish","type":"post","link":"http:\/\/finn-family.com\/?p=26115","title":{"rendered":"Supernova Remnant CTA 1"},"content":{"rendered":"<div><img src='https:\/\/apod.nasa.gov\/image\/2408\/CTA1_15_75_Lelu1024.jpg' style='max-width:600px;' \/><\/p>\n<div>There is a quiet pulsar at the heart of CTA 1. The supernova remnant was discovered as a source of emission at radio wavelengths by astronomers in 1960 and since identified as the result of the death explosion of a massive star. But no radio pulses were detected from the expected pulsar, the rotating neutron star remnant of the massive star&#8217;s collapsed core. Seen about 10,000 years after the initial supernova explosion, the interstellar debris cloud is faint at optical wavelengths. CTA 1&#8217;s visible wavelength emission from still expanding shock fronts is revealed in this deep telescopic image, a frame that spans about 2 degrees across a starfield in the northern constellation of Cepheus. While no pulsar has since been found at radio wavelengths, in 2008 the Fermi Gamma-ray Space Telescope detected pulsed emission from CTA 1, identifying the supernova remnant&#8217;s rotating neutron star. The source has been recognized as the first in a growing class of pulsars that are quiet at radio wavelengths but pulse in high-energy gamma-rays. via NASA <a href=\"https:\/\/apod.nasa.gov\/apod\/ap240823.html\"><\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>There is a quiet pulsar at the heart of CTA 1. The supernova remnant was discovered as a source of emission at radio wavelengths by astronomers in 1960 and since <a href=\"http:\/\/finn-family.com\/?p=26115\" class=\"more-link\">[&hellip;]<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"Layout":"","footnotes":"","_links_to":"","_links_to_target":""},"categories":[9],"tags":[10,12],"class_list":["entry","author-admin","post-26115","post","type-post","status-publish","format-standard","category-whatsup","tag-ifttt","tag-nasa"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"http:\/\/finn-family.com\/index.php?rest_route=\/wp\/v2\/posts\/26115","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/finn-family.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/finn-family.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/finn-family.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/finn-family.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=26115"}],"version-history":[{"count":1,"href":"http:\/\/finn-family.com\/index.php?rest_route=\/wp\/v2\/posts\/26115\/revisions"}],"predecessor-version":[{"id":26116,"href":"http:\/\/finn-family.com\/index.php?rest_route=\/wp\/v2\/posts\/26115\/revisions\/26116"}],"wp:attachment":[{"href":"http:\/\/finn-family.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=26115"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/finn-family.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=26115"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/finn-family.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=26115"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}