{"id":211132,"date":"2022-10-19T19:35:04","date_gmt":"2022-10-19T14:05:04","guid":{"rendered":"https:\/\/blog.forumias.com\/?p=211132"},"modified":"2022-11-12T18:59:51","modified_gmt":"2022-11-12T13:29:51","slug":"the-illusion-of-being-faster-than-lighthow-a-star-problem-was-solved","status":"publish","type":"post","link":"https:\/\/forumias.com\/blog\/the-illusion-of-being-faster-than-lighthow-a-star-problem-was-solved\/","title":{"rendered":"The illusion of being faster than light:how a star problem was solved"},"content":{"rendered":"\n

Source<\/strong>– The post is based on the article \u201cThe illusion of being faster than light: <\/strong>how a star problem was solved\u201d <\/strong>published in The Hindu <\/strong>on 19th October 2022<\/strong>.<\/p>\n

Syllabus: <\/strong>GS3- Science and Technology<\/p>\n

News- <\/strong>The article explains the new observation by scientists related to merging of neutron stars.<\/p>\n

What is the new discovery?<\/strong><\/h5>\n

In 2017, the Laser Interferometer Gravitational-Wave (LIGO)<\/strong> observatories recorded a signal. It indicated that two massive and dense stellar bodies had merged to form a third body, likely a black hole. From this merger, an unusual jet of matter was observed, which gave an illusion of traveling faster than light.<\/p>\n

In a paper published in Nature, the scientists describe measuring the \u201capparent speed\u201d of the jet to be about seven times the speed of light<\/strong>. They have measured the speed of the relativistic jet to be close to 0.9997c, where \u201cc\u201d is the speed of light.<\/p>\n

It clears the doubt around the source of the jet travelling faster then light. These clearly are massive neutron stars merging to give a black hole and throwing off relativistic jets of particles in the process.<\/p>\n

What are neutron stars?<\/strong><\/p>\n

Neutron stars are formed when a star reaches the end of its lifetime. They are formed by supernova explosions. They are extremely dense.<\/p>\n

What is the phenomenon of illusion created by particles moving at seven times the speed of light?<\/strong><\/h5>\n

This happens in cases where a source moves towards us with a velocity that is very close to light’s velocity. This phenomena happens in the case of black holes. It was also known earlier.<\/p>\n

The present measurements and observations made with GAIA data amount to measuring the position of an object in the sky.<\/p>\n

Normally, if we make these measurements from earth-based telescopes, it would require data from radio telescopes spaced apart by intercontinental distances. This technique is called Very Long Baseline Interferometry (VLBI)<\/strong> and was used in the earlier papers. But the newly measured has better precision than VLBI technique.<\/p>\n

What are the impacts of study?<\/strong><\/h5>\n

We have learnt that neutron star mergers can result in relative speed very close to light. It is better than the earlier VLBI technique.<\/p>\n

It strengthens the hypothesis that such neutron star mergers are responsible for a class of gamma-ray bursts. Gamma-ray bursts are flashes of extreme gamma ray photons that release a huge amount of energy. They come from different galaxies in the universe and are observed here quite frequently.<\/p>\n","protected":false},"excerpt":{"rendered":"

Source– The post is based on the article \u201cThe illusion of being faster than light: how a star problem was solved\u201d published in The Hindu on 19th October 2022. Syllabus: GS3- Science and Technology News- The article explains the new observation by scientists related to merging of neutron stars. What is the new discovery? In… Continue reading The illusion of being faster than light:how a star problem was solved<\/span><\/a><\/p>\n","protected":false},"author":10320,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"footnotes":""},"categories":[1230,9],"tags":[216,10498],"class_list":["post-211132","post","type-post","status-publish","format-standard","hentry","category-9-pm-daily-articles","category-public","tag-gs-paper-3","tag-the-hindu","entry"],"jetpack_featured_media_url":"","views":{"total":0,"cached_at":"","cached_date":1704722215},"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/posts\/211132","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/users\/10320"}],"replies":[{"embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/comments?post=211132"}],"version-history":[{"count":0,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/posts\/211132\/revisions"}],"wp:attachment":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/media?parent=211132"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/categories?post=211132"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/tags?post=211132"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}