{"id":8536,"date":"2024-04-17T10:00:25","date_gmt":"2024-04-17T07:00:25","guid":{"rendered":"https:\/\/ch.jfdi.cc\/?p=8536"},"modified":"2024-04-17T10:00:25","modified_gmt":"2024-04-17T07:00:25","slug":"astronomers-detect-milky-ways-second-largest-known-black-hole","status":"publish","type":"post","link":"https:\/\/ch.jfdi.cc\/?p=8536","title":{"rendered":"Astronomers detect Milky Way\u2019s second-largest known black hole"},"content":{"rendered":"<p>Astronomers have discovered a black hole with a mass about 33 times greater than that of our sun, the biggest one known in the Milky Way aside from the supermassive black hole lurking at the center of our galaxy.<br \/>\nThe newly identified black hole is located about 2,000 light-years from Earth \u2013 relatively close in cosmic terms \u2013 in the constellation Aquila, and has a companion star orbiting it, researchers said on Tuesday. A light year is the distance light travels in a year, 5.9 trillion miles (9.5 trillion km).<br \/>\nBlack holes are extraordinarily dense objects with gravity so strong that not even light can escape, making it difficult to spot them. This one was identified through observations made in the European Space Agency\u2019s Gaia mission, which is creating a huge stellar census, because it caused a wobbling motion in its companion star. Data from the European Southern Observatory\u2019s Chile-based Very Large Telescope and other ground-based observatories were used to verify the black hole\u2019s mass.<br \/>\n\u201cThis black hole is not only very massive, it is also very peculiar in many aspects. It is really something we never expected to see,\u201d said Pasquale Panuzzo, a research engineer at the French research agency CNRS working at the Observatoire de Paris and lead author of the study published in the journal Astronomy &amp; Astrophysics.<br \/>\nFor instance, the black hole, called Gaia BH3, and its companion are traveling within the galaxy in the opposite direction of how stars typically orbit in the Milky Way.<br \/>\nGaia BH3 probably formed after the death of a star that was more than 40 as massive as the sun, the researchers said.<br \/>\nBlack holes that result from the collapse of a single star are called stellar black holes. Gaia BH3 is the largest-known stellar black hole, according to astronomer and study co-author Tsevi Mazeh of the Tel Aviv University in Israel.<br \/>\nStellar black holes are dwarfed in size by the supermassive black holes inhabiting the center of most galaxies. One such black hole called Sagittarius A<em>, or Sgr A<\/em>, is located at the heart of the Milky Way. It possesses 4 million times the mass of our sun and is located about 26,000 light-years from Earth.<br \/>\nGaia BH3\u2019s progenitor star was composed almost entirely of hydrogen and helium. Stars in the early universe had such a chemical composition, known as low metallicity. This star had formed relatively early in the universe\u2019s history \u2013 perhaps 2 billion years after the Big Bang event.<br \/>\nWhen that star exploded at the end of its lifespan \u2013 called a supernova \u2013 it blasted some material into space while the remnant violently collapsed to form a black hole.<br \/>\nThe discovery of Gaia BH3, according to Panuzzo, supports stellar evolution models showing that massive stellar black holes can be produced only by a low metallicity star like this one\u2019s progenitor star.<br \/>\nGaia BH3\u2019s companion star, just as old as the other one was, is about 76% of the mass of the sun and a bit colder, but around 10 times more luminous. It orbits the black hole on an elliptical path at a distance varying between about 4.5 times the distance between Earth and the sun \u2013 a measure called an astronomical unit (AU) \u2013 and 29 AU. By way of comparison, Jupiter orbits around five AU from the sun and Neptune around 30 AU.<br \/>\n\u201cThe surprising result for me was the fact that the chemical composition of this companion star does not show anything special, so it was not affected by the supernova explosion of the black hole,\u201d Observatoire de Paris astronomer and study co-author Elisabetta Caffau said.<br \/>\nScientists are not sure just how big stellar black holes can be.<br \/>\n\u201cThe maximum mass for a stellar black hole is a matter of active scientific debate,\u201d Panuzzo said.<br \/>\n(Reuters)black hole. black hole, Milky Way, companion star<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A black hole with a mass 33 times greater than the sun was discovered in the Milky Way, located 2,000 light-years from Earth in the constellation Aquila. The black hole, named Gaia BH3, formed from a star with low metallicity and is the largest-known stellar black hole. Its companion star orbits it on an elliptical path, and the discovery supports the theory that massive stellar black holes can only be produced by low metallicity stars. The maximum size of stellar black holes is still a topic of scientific debate.<\/p>\n","protected":false},"author":5,"featured_media":8537,"comment_status":"open","ping_status":"closed","sticky":false,"template":"Default","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[1521,6795,3748,1439,4369,6798,2369,2692,3210,6117,917,658,299,96,6796,6797,6730,885,6074,335,1279,5644,3512],"class_list":["post-8536","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-other","tag-1521","tag-black-hole","tag-census","tag-chile","tag-collapse","tag-companion-star","tag-data","tag-death","tag-escape","tag-event","tag-explosion","tag-history","tag-israel","tag-lifespan","tag-milky-way","tag-outer-space","tag-paris","tag-popular-on-web","tag-research","tag-space","tag-stars","tag-sun","tag-tel-aviv"],"acf":{"keyphrase":"","keywords":"","sourceimg":"","country-category":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Astronomers detect Milky Way\u2019s second-largest known black hole<\/title>\n<meta name=\"description\" content=\"A black hole with a mass 33 times greater than the sun was discovered in the Milky Way, located 2,000 light-years from Earth in the constellation Aquila. The black hole, named Gaia BH3, formed from a star with low metallicity and is the largest-known stellar black hole. Its companion star orbits it on an elliptical path, and the discovery supports the theory that massive stellar black holes can only be produced by low metallicity stars. The maximum size of stellar black holes is still a topic of scientific debate.\" \/>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Astronomers detect Milky Way\u2019s second-largest known black hole\" \/>\n<meta property=\"og:description\" content=\"A black hole with a mass 33 times greater than the sun was discovered in the Milky Way, located 2,000 light-years from Earth in the constellation Aquila. The black hole, named Gaia BH3, formed from a star with low metallicity and is the largest-known stellar black hole. Its companion star orbits it on an elliptical path, and the discovery supports the theory that massive stellar black holes can only be produced by low metallicity stars. The maximum size of stellar black holes is still a topic of scientific debate.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ch.jfdi.cc\/?p=8536\" \/>\n<meta property=\"og:site_name\" content=\"ch.jfdi.cc\" \/>\n<meta property=\"article:published_time\" content=\"2024-04-17T07:00:25+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/ch.jfdi.cc\/wp-content\/uploads\/2024\/04\/astronomers-detect-milky-ways-second-largest-known-black-hole.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1500\" \/>\n\t<meta property=\"og:image:height\" content=\"1032\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"PhileNews (Cyprus)\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"PhileNews (Cyprus)\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/ch.jfdi.cc\\\/?p=8536#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/ch.jfdi.cc\\\/?p=8536\"},\"author\":{\"name\":\"PhileNews (Cyprus)\",\"@id\":\"https:\\\/\\\/ch.jfdi.cc\\\/#\\\/schema\\\/person\\\/b84b88c4fd397cc2d0104b41d48fad84\"},\"headline\":\"Astronomers detect Milky Way\u2019s second-largest known black hole\",\"datePublished\":\"2024-04-17T07:00:25+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/ch.jfdi.cc\\\/?p=8536\"},\"wordCount\":638,\"commentCount\":0,\"image\":{\"@id\":\"https:\\\/\\\/ch.jfdi.cc\\\/?p=8536#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/ch.jfdi.cc\\\/wp-content\\\/uploads\\\/2024\\\/04\\\/astronomers-detect-milky-ways-second-largest-known-black-hole.jpg\",\"keywords\":[\"000\",\"black hole\",\"census\",\"Chile\",\"collapse\",\"companion star\",\"data\",\"death\",\"escape\",\"event\",\"explosion\",\"history\",\"Israel\",\"lifespan\",\"milky way\",\"outer space\",\"paris\",\"Popular on Web\",\"research\",\"space\",\"stars\",\"sun\",\"Tel Aviv\"],\"articleSection\":[\"Other\"],\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/ch.jfdi.cc\\\/?p=8536#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/ch.jfdi.cc\\\/?p=8536\",\"url\":\"https:\\\/\\\/ch.jfdi.cc\\\/?p=8536\",\"name\":\"Astronomers detect Milky Way\u2019s second-largest known black hole\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/ch.jfdi.cc\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/ch.jfdi.cc\\\/?p=8536#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/ch.jfdi.cc\\\/?p=8536#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/ch.jfdi.cc\\\/wp-content\\\/uploads\\\/2024\\\/04\\\/astronomers-detect-milky-ways-second-largest-known-black-hole.jpg\",\"datePublished\":\"2024-04-17T07:00:25+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/ch.jfdi.cc\\\/#\\\/schema\\\/person\\\/b84b88c4fd397cc2d0104b41d48fad84\"},\"description\":\"A black hole with a mass 33 times greater than the sun was discovered in the Milky Way, located 2,000 light-years from Earth in the constellation Aquila. 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