{"id":5295,"date":"2021-02-25T14:26:25","date_gmt":"2021-02-25T14:26:25","guid":{"rendered":"https:\/\/dailyrapidnews.com\/eng\/?p=5295"},"modified":"2021-02-25T14:26:25","modified_gmt":"2021-02-25T14:26:25","slug":"ghost-particle-travels-750-million-light-years-ends-up-buried-under-the-antarctic-ice","status":"publish","type":"post","link":"https:\/\/dailyrapidnews.com\/eng\/2021\/02\/25\/ghost-particle-travels-750-million-light-years-ends-up-buried-under-the-antarctic-ice\/","title":{"rendered":"Ghost particle travels 750 million light-years, ends up buried under the Antarctic ice"},"content":{"rendered":"<p>For the first time ever, scientists have received mysteriously delayed signals from two supermassive black holes that snacked on stars in their vicinity.<\/p>\n<p>In the first case, a black hole weighing as much as 30 million suns located in a galaxy approximately 750 million light-years away gobbled up a star that passed too close to its edge. Light from the event was spotted in April 2019, but six months later a telescope in\u00a0<u>Antarctica<\/u>\u00a0captured an extremely high-energy and ghostly particle \u2014 a\u00a0<u>neutrino<\/u>\u00a0\u2014 that was apparently burped out during the feast.<\/p>\n<aside class=\"hawk-placeholder\" data-render-type=\"fte\" data-skip=\"dealsy\" data-widget-type=\"seasonal\" data-viewports=\"mobile\" data-widget-id=\"1563281490382428700\" data-result=\"missing\"><\/aside>\n<p>A second incident involved a supermassive black hole with around 1 million times the sun&#8217;s mass in a galaxy about 700 million light-years away. Observatories spied it lunching on a star in August 2015 and then going quiet before a sudden burst of\u00a0<u>radio waves<\/u>\u00a0emerged in February 2016 and then again, almost four years later, in July 2019.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-5298\" src=\"https:\/\/dailyrapidnews.com\/eng\/wp-content\/uploads\/2021\/02\/Ghost-particle-travels-750-million-light-years-ends-up-buried-under-the-Antarctic-ice-rapid-news-rapidnews.jpg\" alt=\"Ghost-particle-travels-750-million-light-years-ends-up-buried-under-the-Antarctic-ice-rapid-news-rapidnews\" width=\"720\" height=\"406\" srcset=\"https:\/\/dailyrapidnews.com\/eng\/wp-content\/uploads\/2021\/02\/Ghost-particle-travels-750-million-light-years-ends-up-buried-under-the-Antarctic-ice-rapid-news-rapidnews.jpg 720w, https:\/\/dailyrapidnews.com\/eng\/wp-content\/uploads\/2021\/02\/Ghost-particle-travels-750-million-light-years-ends-up-buried-under-the-Antarctic-ice-rapid-news-rapidnews-300x169.jpg 300w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/p>\n<p>Both occurrences involve what&#8217;s known as a tidal disruption event (TDE), where a supermassive black hole shreds a star to pieces using its colossal gravitational pull \u2014 essentially an extreme version of how the moon&#8217;s gravitational pull raises tides on the\u00a0<u>Earth<\/u>. Such cosmic events are still not well understood and these two new findings should greatly help astronomers unlock their inner workings.<\/p>\n<p>&#8220;Every time we detect a new TDE, there can always be something exciting and unexpected associated with it,&#8221; Jane Dai, who studies high-energy astrophysics at the University of Hong Kong, told Live Science. &#8220;So there is a lot of new physics that can be done,&#8221; added Dai, who was not involved in either finding.<\/p>\n<p>Researchers classify tidal disruption events as &#8220;transient&#8221; phenomena, since they typically flare over the course of a few days and then dim again. What exactly is creating the light in such cases is still not entirely clear, Assaf Horesh, an astronomer at the Hebrew University of Jerusalem in Israel and co-author on two papers about the new events, told Live Science.<\/p>\n<p>As the supermassive black hole tears apart its stellar meal, the star becomes &#8220;spaghettified&#8221; into a long thin stream. This torrent of material wraps around the black hole and is thought to produce a jet of energy as it circles like water going down a drain, though other models predict that some of the former star might explode outward and interact with surrounding gas and dust, generating the flare, Horesh said.<\/p>\n<p>Given the extreme environment surrounding the black hole, particles can become greatly accelerated in processes akin to atom smashers like the Large Hadron Collider in Geneva, Switzerland. Neutrinos are tiny specks roughly 500,000 times lighter than an electron and, being neutral (having no charge), don&#8217;t interact with much as they fly through the cosmos.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-5296\" src=\"https:\/\/dailyrapidnews.com\/eng\/wp-content\/uploads\/2021\/02\/Ghost-particle-travels-750-million-light-years-ends-up-buried-under-the-Antarctic-ice-rapid-news-rapidnews-antartica.jpg\" alt=\"Ghost-particle-travels-750-million-light-years-ends-up-buried-under-the-Antarctic-ice-rapid-news-rapidnews-antartica\" width=\"450\" height=\"336\" srcset=\"https:\/\/dailyrapidnews.com\/eng\/wp-content\/uploads\/2021\/02\/Ghost-particle-travels-750-million-light-years-ends-up-buried-under-the-Antarctic-ice-rapid-news-rapidnews-antartica.jpg 450w, https:\/\/dailyrapidnews.com\/eng\/wp-content\/uploads\/2021\/02\/Ghost-particle-travels-750-million-light-years-ends-up-buried-under-the-Antarctic-ice-rapid-news-rapidnews-antartica-300x224.jpg 300w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/p>\n<p>This allowed a single neutrino to travel outward from the first TDE and head toward Earth, eventually appearing in a square-kilometer-size instrument known as the IceCube Neutrino Observatory buried in the Antarctic ice. Researchers labeled the detection IC191001A and calculated that it had nearly 1 quadrillion electronvolts of energy, making it among the most powerful neutrinos IceCube has ever seen, according to one of the new paper<u>s<\/u>, which was published Feb. 22 in the journal\u00a0<u>Nature Astronomy<\/u>.<\/p>\n<p>While physicists have predicted that neutrinos are produced in tidal disruption events, astronomers have never tied a neutrino back to a particular TDE, making this a spectacular first. As to why it arrived six months after the event itself, &#8220;I have no clue,&#8221; said Horesh.<\/p>\n<p>A similar mystery surrounds the second study he led, also in\u00a0<u>Nature Astronomy<\/u>\u00a0. In that case, optical light \u2014 the kind our eyes see \u2014 was seen to flare from a snacking black hole and then fade away, as per usual for these phenomena.<\/p>\n<p>Horesh and his co-authors decided to conduct follow-up studies using the Karl Jansky Very Large Array (VLA) telescope in New Mexico, which detects radio waves. They saw nothing coming from the black hole for months and then, suddenly, six months after the initial event, a bright radio flare. Even stranger, VLA data collected almost four years later showed another curious burst of radio energy.<\/p>\n<p>&#8220;Someone can make up a story for why we saw something six months later,&#8221; Horesh said. &#8220;There is nothing to explain why it should flare up, decay and then flare up again. It&#8217;s really interesting.&#8221;<\/p>\n<p>He points to the need for new models that can explain these delayed signals. His team speculates that part of the jet of energy is coming out at an odd angle, producing a flaring pattern that is sometimes seen and sometimes not as the accretion disk spins. Another possibility is that the stellar remains are driving shock waves that move slowly through material surrounding the black hole, which produce energetic emissions at later times, though no one really knows.<\/p>\n<p>But given that these incidents now seem to last longer than originally suspected, Horesh is looking forward to being able to detect more tidal disruption events that could yield insights into their nature.<\/p>\n<p>Dai, too, is excited about the prospect of opening up ways to study the mysteries of TDEs. &#8220;These events are ideal laboratories to learn about black holes,&#8221; she said, giving researchers important clues about how material accretes around them and produces jets and flares.<\/p>\n<p>The Vera C. Rubin Observatory in Chile, which is expected to begin collecting data this year, could theoretically see hundreds of new TDEs, she added; and other upcoming space-based instruments from Europe and China should add to this bounty.<\/p>\n<p>&#8220;The future for the field is very bright,&#8221; she said.<\/p>\n<div class=\"jwplayer__widthsetter\">\n<div class=\"jwplayer__wrapper\"><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>For the first time ever, scientists have received mysteriously delayed signals from two supermassive black<\/p>\n","protected":false},"author":1,"featured_media":5297,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","footnotes":""},"categories":[5],"tags":[],"class_list":["post-5295","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v18.4.1 - 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href=\"https:\/\/dailyrapidnews.com\/eng\/category\/science\/\" rel=\"category tag\">Science<\/a>","tag_info":"Science","comment_count":"0","jetpack-related-posts":[{"id":16324,"url":"https:\/\/dailyrapidnews.com\/eng\/2022\/05\/12\/the-first-image-of-the-milky-way-monster-is-a-black-hole\/","url_meta":{"origin":5295,"position":0},"title":"The first image of the Milky Way monster is a black hole.","date":"May 12, 2022","format":false,"excerpt":"This is the first image of the massive black hole that resides in the center of our galaxy. The object, known as Sagittarius A*, is four million times the mass of our Sun. The light originating from super-heated gas driven by huge gravitational forces circles the central dark region where\u2026","rel":"","context":"In &quot;World&quot;","img":{"alt_text":"black hole","src":"https:\/\/i0.wp.com\/dailyrapidnews.com\/eng\/wp-content\/uploads\/2022\/05\/124702885_top.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":527,"url":"https:\/\/dailyrapidnews.com\/eng\/2020\/12\/29\/chinese-astronomers-discover-591-high-velocity-stars-with-lamost-and-gaia\/","url_meta":{"origin":5295,"position":1},"title":"Chinese astronomers discover 591 high-velocity stars with LAMOST and Gaia","date":"December 29, 2020","format":false,"excerpt":"A Chinese research team has discovered 591 high-velocity stars based on data from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) and the European Space Agency's Gaia satellite. High-velocity stars move faster than 65 km\/s to 100 km\/s relative to the average motion of other stars, and may at\u2026","rel":"","context":"In &quot;Health&quot;","img":{"alt_text":"chinese-astronomer-discovers-fastest-rotating-star-in-milky-way2-China-astronomers-discover-591-high-velocity-stars-dailyrapidnews","src":"https:\/\/i0.wp.com\/dailyrapidnews.com\/eng\/wp-content\/uploads\/2020\/12\/chinese-astronomer-discovers-fastest-rotating-star-in-milky-way2-China-astronomers-discover-591-high-velocity-stars-dailyrapidnews.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":9560,"url":"https:\/\/dailyrapidnews.com\/eng\/2021\/04\/25\/hubble-captured-a-monster-star-living-on-the-edge\/","url_meta":{"origin":5295,"position":2},"title":"Hubble captured a monster star living on the edge","date":"April 25, 2021","format":false,"excerpt":"While celebrating its 31st anniversary of the launching,\u00a0NASA\u2018s Hubble Space Telescope captured a monster star on the edge of destruction. Dubbed as AG Carinae, this celebrity star is one of the brightest stars seen in our galaxy. It is waging a tug-of-war between gravity and radiation to avoid self-destruction. The\u2026","rel":"","context":"Similar post","img":{"alt_text":"Hubble-captured-a-monster-star-living-on-the-edge-rapidnews-dailyrapid","src":"https:\/\/i0.wp.com\/dailyrapidnews.com\/eng\/wp-content\/uploads\/2021\/04\/Hubble-captured-a-monster-star-living-on-the-edge-rapidnews-dailyrapid.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":8395,"url":"https:\/\/dailyrapidnews.com\/eng\/2021\/04\/08\/the-x17-particle-scientists-may-have-discovered-the-fifth-force-of-nature\/","url_meta":{"origin":5295,"position":3},"title":"The \u2018X17\u2019 particle: Scientists may have discovered the fifth force of nature","date":"April 8, 2021","format":false,"excerpt":"All of the forces we experience every day can be reduced to just four categories: gravity, electromagnetism, the strong force and the weak force. Now, physicists say they have found possible signs of a fifth fundamental force of nature. The findings come from research carried out at a laboratory near\u2026","rel":"","context":"In &quot;Science&quot;","img":{"alt_text":"Scientists-Just-Found-Evidence-for-Fifth-Force-of-Nature-rapidnews","src":"https:\/\/i0.wp.com\/dailyrapidnews.com\/eng\/wp-content\/uploads\/2021\/04\/Scientists-Just-Found-Evidence-for-Fifth-Force-of-Nature-rapidnews-e1617880279261.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":9582,"url":"https:\/\/dailyrapidnews.com\/eng\/2021\/04\/25\/whitest-white-paint-could-help-fight-climate-change\/","url_meta":{"origin":5295,"position":4},"title":"Whitest white paint could help fight climate change","date":"April 25, 2021","format":false,"excerpt":"Typical commercial white paints reflect only 80% to 90% of sunlight and fail to help buildings stay cool during the day. For the past six years, mechanical engineer Xiulin Ruan at Purdue University in West Lafayette, Indiana, and his colleagues sought to create whiter paints to cool buildings \"similar to\u2026","rel":"","context":"In &quot;Science&quot;","img":{"alt_text":"Scientists-Claim-This-New-Paint-Is-the-Whitest-White-Ever-paint-whitest-white-purdue-university-xiulin-ruan_dezeen_rapidnews-dailyrapid","src":"https:\/\/i0.wp.com\/dailyrapidnews.com\/eng\/wp-content\/uploads\/2021\/04\/Scientists-Claim-This-New-Paint-Is-the-Whitest-White-Ever-paint-whitest-white-purdue-university-xiulin-ruan_dezeen_rapidnews-dailyrapid-e1619371547736.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":4705,"url":"https:\/\/dailyrapidnews.com\/eng\/2021\/02\/16\/who-gives-global-green-light-for-astrazeneca-oxford-covid-19-vaccine\/","url_meta":{"origin":5295,"position":5},"title":"WHO gives global green light for AstraZeneca-Oxford COVID-19 vaccine","date":"February 16, 2021","format":false,"excerpt":"The World Health Organization gave emergency use approval to AstraZeneca\u2019s COVID-19 vaccines on Monday, meaning distribution can start to poorer countries starved of doses to fight the pandemic. The AstraZeneca-Oxford jab forms the bulk of batches being lined up through COVAX, the global programme aimed at procuring and shipping out\u2026","rel":"","context":"In &quot;Health&quot;","img":{"alt_text":"WHO-gives-global-green-light-for-AstraZeneca-Oxford-COVID-19-vaccine-rapidnews-dailyrapid-dailyrapidnews","src":"https:\/\/i0.wp.com\/dailyrapidnews.com\/eng\/wp-content\/uploads\/2021\/02\/WHO-gives-global-green-light-for-AstraZeneca-Oxford-COVID-19-vaccine-rapidnews-dailyrapid-dailyrapidnews.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]}],"_links":{"self":[{"href":"https:\/\/dailyrapidnews.com\/eng\/wp-json\/wp\/v2\/posts\/5295","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dailyrapidnews.com\/eng\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dailyrapidnews.com\/eng\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dailyrapidnews.com\/eng\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dailyrapidnews.com\/eng\/wp-json\/wp\/v2\/comments?post=5295"}],"version-history":[{"count":1,"href":"https:\/\/dailyrapidnews.com\/eng\/wp-json\/wp\/v2\/posts\/5295\/revisions"}],"predecessor-version":[{"id":5299,"href":"https:\/\/dailyrapidnews.com\/eng\/wp-json\/wp\/v2\/posts\/5295\/revisions\/5299"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dailyrapidnews.com\/eng\/wp-json\/wp\/v2\/media\/5297"}],"wp:attachment":[{"href":"https:\/\/dailyrapidnews.com\/eng\/wp-json\/wp\/v2\/media?parent=5295"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dailyrapidnews.com\/eng\/wp-json\/wp\/v2\/categories?post=5295"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dailyrapidnews.com\/eng\/wp-json\/wp\/v2\/tags?post=5295"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}