{"id":94017,"date":"2021-03-11T17:13:18","date_gmt":"2021-03-11T11:43:18","guid":{"rendered":"https:\/\/blog.forumias.com\/?p=94017"},"modified":"2021-03-12T11:34:43","modified_gmt":"2021-03-12T06:04:43","slug":"astronomers-discover-most-distant-quasar-p17218","status":"publish","type":"post","link":"https:\/\/forumias.com\/blog\/astronomers-discover-most-distant-quasar-p17218\/","title":{"rendered":"Astronomers discover most distant &#8220;Quasar P172+18&#8221;"},"content":{"rendered":"<p><strong>What is the news?<\/strong><\/p>\n<p>International team of astronomers discovers the most distant \u2018Radio-Loud\u2019 Quasar. It is named \u201cP172+18\u201d.\u00a0 P172+18 discovered with the help of the European Southern Observatory\u2019s Very Large Telescope (ESO\u2019s VLT).<\/p>\n<p><strong>About P172+18:<\/strong><\/p>\n<ul>\n<li><strong>P172+18 <\/strong>is a quasar. It emitted wavelengths with a redshift of 6.8. The higher the redshift of the radio wavelength, the farther away is the source.\n<ul>\n<li><strong>Redshift<\/strong> is an increase in the wavelength and corresponding decrease in the frequency and photon energy of electromagnetic radiation(such as light).<\/li>\n<\/ul>\n<\/li>\n<li>The quasar is also one of the fastest accreting quasars. It means it is accumulating objects from the galaxy at an enormous speed.<\/li>\n<li>Further, 90% of the quasars do not emit strong radio waves, making this newly-discovered quasar special.<\/li>\n<\/ul>\n<p><strong>About Quasars:<\/strong><\/p>\n<ul>\n<li><strong>What are Quasars? <\/strong>Quasars are very luminous objects around black holes in faraway galaxies that emit jets at radio frequencies.<\/li>\n<li><strong>Origin of Name: <\/strong>The word quasar is short for &#8220;quasi-stellar radio source&#8221;. This name, which means star-like emitters of radio waves was given in the 1960s when quasars were first detected.\n<ul>\n<li>However, now most astronomers know most quasars are faint radio emitters. In addition to radio waves and visible light, quasars also emit ultraviolet rays, infrared waves, X-rays, and gamma-rays.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Where are they found?<\/strong> Quasars are only found in galaxies that have supermassive black holes which power these bright discs.<\/li>\n<li><strong>How are Quasars formed?<\/strong> Most active galaxies have a supermassive black hole at the centre which sucks in surrounding objects. These objects while moving around a black hole emit energy before being sucked into the black hole. Quasars are formed from this energy.<\/li>\n<li><strong>Key Characteristics of Quasars:<\/strong>\n<ul>\n<li>Most quasars are larger than our solar system as they are approximately 1 kiloParsec in width. (<strong>Parsec <\/strong>is a unit of length used to measure the astronomical objects outside the Solar System. They are approximately equal to 3.26 light-years).<\/li>\n<li>Even though quasars are very bright, we cannot see any quasars in the night sky without using a telescope. This is due to their great distance from Earth.<\/li>\n<li>Energy from quasars takes billions of years to reach the Earth&#8217;s atmosphere. For this reason, the study of quasars can provide astronomers with information about the early stages of the universe.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><strong>Source: <\/strong><a href=\"https:\/\/www.downtoearth.org.in\/news\/science-technology\/most-distant-source-of-radio-emission-discovered-holds-clues-about-ancient-universe-75833\"><strong>Down To Earth<\/strong><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>What is the news? International team of astronomers discovers the most distant \u2018Radio-Loud\u2019 Quasar. It is named \u201cP172+18\u201d.\u00a0 P172+18 discovered with the help of the European Southern Observatory\u2019s Very Large Telescope (ESO\u2019s VLT). About P172+18: P172+18 is a quasar. It emitted wavelengths with a redshift of 6.8. The higher the redshift of the radio wavelength,&hellip; <a class=\"more-link\" href=\"https:\/\/forumias.com\/blog\/astronomers-discover-most-distant-quasar-p17218\/\">Continue reading <span class=\"screen-reader-text\">Astronomers discover most distant &#8220;Quasar P172+18&#8221;<\/span><\/a><\/p>\n","protected":false},"author":10317,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"footnotes":""},"categories":[1566,1738,9],"tags":[1425],"class_list":["post-94017","post","type-post","status-publish","format-standard","hentry","category-daily-factly-articles","category-science-and-technology-daily-factly-articles","category-public","tag-st_4","entry"],"jetpack_featured_media_url":"","views":{"total":0,"cached_at":"","cached_date":1704735550},"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/posts\/94017","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\/10317"}],"replies":[{"embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/comments?post=94017"}],"version-history":[{"count":0,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/posts\/94017\/revisions"}],"wp:attachment":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/media?parent=94017"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/categories?post=94017"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/tags?post=94017"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}