{"id":224667,"date":"2025-11-07T01:17:32","date_gmt":"2025-11-07T07:17:32","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2025\/11\/nearby-pulsar-offers-insights-into-emission-physics-near-the-death-line"},"modified":"2025-11-07T01:17:32","modified_gmt":"2025-11-07T07:17:32","slug":"nearby-pulsar-offers-insights-into-emission-physics-near-the-death-line","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2025\/11\/nearby-pulsar-offers-insights-into-emission-physics-near-the-death-line","title":{"rendered":"Nearby pulsar offers insights into emission physics near the death line"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/nearby-pulsar-offers-insights-into-emission-physics-near-the-death-line2.jpg\"><\/a><\/p>\n<p>Using the Five-hundred-meter Aperture Spherical Radio Telescope (FAST), astronomers from the Chinese Academy of Sciences (CAS) and elsewhere have observed a nearby pulsar known as PSR J2129+4119. Results of the observational campaign, <a href=\"https:\/\/arxiv.org\/abs\/2510.26209\" target=\"_blank\">published<\/a> October 30 on the <i>arXiv<\/i> pre-print server, deliver important insights into the behavior and properties of this pulsar.<\/p>\n<p>Radio emission from pulsars exhibits a variety of phenomena, including subpulse drifting, nulling, or mode changing. In the case of subpulse drifting, radio emission from a pulsar appears to drift in spin phase within the main pulse profile. When it comes to nulling, the emission from a pulsar ceases abruptly from a few to hundreds of pulse periods before it is restored.<\/p>\n<p>Discovered in 2017, PSR J2129+4119 is an old and nearby pulsar located some 7,500 light years away. It has a pulse period of 1.69 seconds, dispersion measure of 31 cm\/pc<sup>3<\/sup>, and characteristic age of 342.8 million years. The pulsar lies below the so-called \u201cdeath line\u201d\u2014a theoretical boundary in the period-period derivative diagram below which the coherent radio emission is sustained.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Using the Five-hundred-meter Aperture Spherical Radio Telescope (FAST), astronomers from the Chinese Academy of Sciences (CAS) and elsewhere have observed a nearby pulsar known as PSR J2129+4119. Results of the observational campaign, published October 30 on the arXiv pre-print server, deliver important insights into the behavior and properties of this pulsar. Radio emission from pulsars [\u2026]<\/p>\n","protected":false},"author":427,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[219,8],"tags":[],"class_list":["post-224667","post","type-post","status-publish","format-standard","hentry","category-physics","category-space"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/224667","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/427"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=224667"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/224667\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=224667"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=224667"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=224667"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}