{"id":219,"date":"2021-12-23T11:41:22","date_gmt":"2021-12-23T10:41:22","guid":{"rendered":"https:\/\/home.phys.ntnu.no\/LOVE-NEST\/?p=219"},"modified":"2022-03-24T12:21:02","modified_gmt":"2022-03-24T11:21:02","slug":"a-2-3-solar-mass-neutron-star-in-psr-j22155135","status":"publish","type":"post","link":"https:\/\/home.phys.ntnu.no\/LOVE-NEST\/a-2-3-solar-mass-neutron-star-in-psr-j22155135\/","title":{"rendered":"A 2.3 Solar-mass neutron star in PSR J2215+5135"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row][vc_column][vc_video link=&#8221;https:\/\/www.youtube.com\/watch?v=l41y_GqJq7c&#8221;][vc_column_text]VIDEO: PSR J2215+5135<br \/>\nOrbital period: 4.14 hours<br \/>\nSpin period: 2.61 milliseconds<br \/>\nDistance from Earth: about 10.000 light-years<\/p>\n<p>The inner face of the companion star, strongly irradiated by the pulsar, is heated up to about 8100 degrees Kelvin. As a consequence, hydrogen absorption lines dominate the visible spectrum of the hot side of the star.<\/p>\n<p>The outer face of the companion star is shielded from the pulsar wind, and remains at about 5700 degrees Kelvin. As a consequence, magnesium absorption lines are stronger on its cold side.<\/p>\n<p>This allowed astronomers to measure the velocity of both sides of the companion, finding one of the most massive neutron stars known to date: about 2.3 times heavier than the Sun!<\/p>\n<p>Design: G. P\u00e9rez-Diaz, IAC<br \/>\nBinary simulations: R. Hynes, LSU<br \/>\nFor more info: M. Linares, T. Shahbaz, J. Casares (2018, ApJ)[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>[vc_row][vc_column][vc_video link=&#8221;https:\/\/www.youtube.com\/watch?v=l41y_GqJq7c&#8221;][vc_column_text]VIDEO: PSR J2215+5135 Orbital period: 4.14 hours Spin period: 2.61 milliseconds Distance from Earth: about 10.000 light-years The inner face of the companion star, strongly irradiated by the pulsar, is heated up to about 8100 degrees Kelvin. As a consequence, hydrogen absorption lines dominate the visible spectrum of the hot side of the star.&hellip;<\/p>\n","protected":false},"author":3,"featured_media":216,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[],"class_list":["post-219","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog-outreach","category-18","description-off"],"_links":{"self":[{"href":"https:\/\/home.phys.ntnu.no\/LOVE-NEST\/wp-json\/wp\/v2\/posts\/219","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/home.phys.ntnu.no\/LOVE-NEST\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/home.phys.ntnu.no\/LOVE-NEST\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/home.phys.ntnu.no\/LOVE-NEST\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/home.phys.ntnu.no\/LOVE-NEST\/wp-json\/wp\/v2\/comments?post=219"}],"version-history":[{"count":0,"href":"https:\/\/home.phys.ntnu.no\/LOVE-NEST\/wp-json\/wp\/v2\/posts\/219\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/home.phys.ntnu.no\/LOVE-NEST\/wp-json\/wp\/v2\/media\/216"}],"wp:attachment":[{"href":"https:\/\/home.phys.ntnu.no\/LOVE-NEST\/wp-json\/wp\/v2\/media?parent=219"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/home.phys.ntnu.no\/LOVE-NEST\/wp-json\/wp\/v2\/categories?post=219"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/home.phys.ntnu.no\/LOVE-NEST\/wp-json\/wp\/v2\/tags?post=219"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}