{"id":109004,"date":"2026-06-20T13:56:54","date_gmt":"2026-06-20T08:26:54","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=109004"},"modified":"2026-06-20T13:56:54","modified_gmt":"2026-06-20T08:26:54","slug":"fast-x-ray-transient","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/fast-x-ray-transient\/","title":{"rendered":"Fast X-Ray Transient"},"content":{"rendered":"<h2><b>Fast X-Ray Transient Latest News<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Recently, astronomers have uncovered new clues about the origin of a rare and powerful cosmic X-ray flash known as a Fast X-ray Transient (FXT).<\/span><\/p>\n<h2><b>About Fast X-Ray Transient<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">FXTs are <\/span><b>energetic, non-repeating bursts of low-energy X-rays<\/b><span style=\"font-weight: 400;\"> associated with violent <\/span><b>cosmic events.<\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">It was first identified about a decade ago.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">They typically last <\/span><b>from a few minutes<\/b><span style=\"font-weight: 400;\"> to <\/span><b>several hours<\/b><span style=\"font-weight: 400;\"> before fading rapidly, making them difficult to study and leaving their origins largely uncertain.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Many FXTs are associated with <\/span><b>high-redshift long period gamma-ray bursts<\/b><span style=\"font-weight: 400;\"> (lGRBs).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Known X-ray transient types with these timescales include stellar flares, <\/span><b>X-ray binary outbursts, supernova shock breakouts (SN SBOs) and gamma-ray bursts<\/b><span style=\"font-weight: 400;\"> (GRBs).<\/span><\/li>\n<\/ul>\n<h3><b>What is Gamma-Ray Burst?<\/b><\/h3>\n<ul>\n<li><span style=\"font-weight: 400;\">It is a powerful <\/span><b>astronomical cosmic<\/b><span style=\"font-weight: 400;\"> burst of <\/span><b>high-energy gamma-ray.<\/b><\/li>\n<li><span style=\"font-weight: 400;\">It emits more energy in a few seconds than our Sun will emit in its lifetime.<\/span><\/li>\n<li><span style=\"font-weight: 400;\">It has two distinct emission phases: the <\/span><b>short-lived prompt emission<\/b><span style=\"font-weight: 400;\"> (the initial burst phase that emits gamma-rays), followed by a long-lived <\/span><b>multi-wavelength afterglow phase.<\/b><span style=\"font-weight: 400;\">\u00a0<\/span><\/li>\n<li aria-level=\"1\"><b>Sources of Gamma Ray<\/b>\n<ul>\n<li><span style=\"font-weight: 400;\">They are produced by the <\/span><b>hottest and most energetic objects<\/b><span style=\"font-weight: 400;\"> in the universe, such as <\/span><b>neutron stars and pulsars, supernova<\/b><span style=\"font-weight: 400;\"> explosions, and regions around black holes.<\/span><\/li>\n<li><span style=\"font-weight: 400;\">On Earth, gamma waves are generated by nuclear explosions, lig<\/span><b>htning, and the less dramatic activity of radioactive decay.<\/b><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><strong>Source: <a href=\"https:\/\/www.pib.gov.in\/PressReleasePage.aspx?PRID=2275128&amp;reg=48&amp;lang=1\" target=\"_blank\" rel=\"nofollow noopener\">PIB<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Fast X-ray Transients  are energetic, non-repeating bursts of low-energy X-rays associated with violent cosmic events. Read more about Fast X-Ray Transient, Meaning, Sources, Latest News.<\/p>\n","protected":false},"author":24,"featured_media":108983,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[8225],"class_list":{"0":"post-109004","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-upsc-prelims-current-affairs","8":"tag-fast-x-ray-transient","9":"no-featured-image-padding"},"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/109004","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/users\/24"}],"replies":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/comments?post=109004"}],"version-history":[{"count":4,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/109004\/revisions"}],"predecessor-version":[{"id":109042,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/109004\/revisions\/109042"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/108983"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=109004"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=109004"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=109004"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}