{"id":1593,"date":"2026-09-24T19:51:22","date_gmt":"2026-09-24T23:51:22","guid":{"rendered":"https:\/\/canasanta.ca\/?p=1593"},"modified":"2026-09-24T19:51:22","modified_gmt":"2026-09-24T23:51:22","slug":"scientists-discover-how-a-black-hole-can-shut-down-a-galaxy","status":"publish","type":"post","link":"https:\/\/canasanta.ca\/en\/al-dia\/descubren-como-un-agujero-negro-puede-apagar-una-galaxia\/","title":{"rendered":"SCIENTISTS DISCOVER HOW A BLACK HOLE CAN \u201cTURN OFF\u201d A GALAXY"},"content":{"rendered":"

A galaxy does not end where we can no longer see its stars. Far beyond that lies an immense cloud of gas known as the circumgalactic medium, or CGM<\/em>. It is a gigantic region that can extend ten to twenty times farther than the visible part of a galaxy and functions as a sort of cosmic fuel reservoir. Much of the matter remains there; if it manages to cool and fall inward, it can condense and play a role in the birth of new stars.<\/p>\n

This has long posed a problem. If large galaxies are surrounded by such a vast supply of raw material, why do many of them stop forming stars? The answer may lie in one of the most violent places in the universe: the black hole supermassive<\/em> located in the heart of the galaxy itself.<\/p>\n

When one of these monsters is active and devouring matter, some of the enormous energy generated in its vicinity can escape in the form of extremely narrow jets of plasma traveling at enormous speeds. We\u2019re not talking about a uniform explosion that spreads in all directions. These are veritable cosmic spears capable of piercing the galaxy and continuing their journey far beyond its stars. We knew that these jets<\/em><\/strong> They existed. The challenge was to determine exactly what they did when they reached the enormous gas reserves surrounding the galaxy.<\/p>\n

A team led by Sanchayeeta Borthakur<\/strong>, by Arizona State University<\/em>, and Namrata Roy<\/strong>, from the Raman Research Institute<\/em>, decided to search for precisely that signature. To do so, he combined two enormous sets of observations: optical data from the Dark Energy Spectroscopic Instrument (DESI) and radio observations from the LOFAR Two-meter Sky Survey (LoTSS).<\/p>\n

The problem was that the signal they were looking for was too weak in a single galaxy. The researchers had to gather data from hundreds of galaxies with active black holes and carefully compare what was happening in different directions around them. That's when the pattern emerged.<\/p>\n

When they averaged the gas in all directions, the signal was weak. But when they looked specifically along the axis along which the radio jets were traveling, the H-alpha emission from ionized hydrogen became clear and much more intense. The gas was leaving a sort of luminous trail following the path of the jet.<\/p>\n

That matters because it allows us to physically connect two worlds on almost absurdly different scales. On one hand, there is the central black hole, which is small compared to the galaxy that contains it. On the other, there is a gas reservoir that extends hundreds of thousands of light-years into space. Between the two, there is now an observable line of influence.<\/p>\n

The researchers also found that the signal is particularly strong in two regions: near the galaxy, where the jet begins to interact with the circumgalactic medium, and much farther out, toward the outer regions, where a significant amount of energy appears to be deposited.<\/p>\n

The black hole, therefore, does not merely govern what happens in its immediate vicinity. It is affecting the galaxy's future reserves. And that is where the most fascinating part of the discovery comes in.<\/p>\n

To form stars, gas must cool. Once it does, it can fall toward the center of the galaxy, become concentrated in increasingly dense regions, and eventually collapse under its own gravity. Stars are born from these clouds, and planetary systems form around many of them.<\/p>\n

But if the black hole's jets continuously heat, ionize, and agitate that gas, the process becomes much more difficult. Some of the fuel remains too hot or too disturbed to return to the interior and efficiently contribute to new generations of stars. The black hole may be turning off the tap.<\/em><\/p>\n

It doesn't happen all at once. A galaxy doesn't go out like a light bulb. Nor does it mean that a single jet destroys all of its stars; existing stars can continue to live for billions of years. What may decline is the ability to form new stars.<\/p>\n

That detail is crucial. When astronomers talk about a galaxy \u201cturned off<\/em>\u201d or quiescent\u2014refer to a system in which star formation has greatly diminished. It still contains stars, but the great cosmic factory that produced many of them has slowed down. The new study offers an observational explanation of how a black hole can contribute to bringing about that fate.<\/p>\n

The researchers also made an important observation using magnesium as an indicator of the colder gas. Unlike the H-alpha glow, this material was distributed much more uniformly and did not show the same relationship to the direction of the jets. This reinforces the idea that the pattern detected in the ionized hydrogen is not simply a general characteristic of the gaseous halo, but is specifically related to the path followed by the jets.<\/p>\n

The finding also helps answer a much broader question: DoesHow can something so small control something so enormous?<\/em>?<\/p>\n

A supermassive black hole can be comparable in size, in astronomical terms, to our solar system, while the galaxy surrounding it contains tens or hundreds of billions of star systems. It would seem impossible for the former to determine the fate of the latter. But the black hole doesn\u2019t need to reach every star. It only needs to alter the fuel from which the next generation of stars will be born. That difference completely changes the perspective.<\/em><\/p>\n

For a long time, we imagined black holes primarily as devourers: objects whose gravity traps matter and from which not even light can escape once it crosses the event horizon. Today we know that active black holes can also, indirectly, become some of the most powerful engines in their environment. While they absorb matter on one side, the system surrounding them can eject extraordinary amounts of energy on the other.<\/p>\n

And that energy can travel to places where the black hole would seem to have no authority whatsoever. Hundreds of thousands of light-years away, the gas responds. It heats up. It becomes ionized. It stops behaving as it did before. And perhaps, millions or billions of years later, stars that might have been born never come into existence.<\/p>\n

That is why this discovery is not just about black holes. It is about the history of galaxies and, ultimately, our own.<\/p>\n

Our Sun was born from gas in a galaxy that cooled and condensed. The Earth exists because earlier generations of stars were able to form, live, produce heavy elements, and die, enriching the material from which new planetary systems later emerged.<\/p>\n

When we study what determines whether a galaxy continues to form stars, we are also studying what determines whether it will continue to have opportunities to create worlds. At the heart of it all lies an extraordinary paradox: the darkest object in a galaxy may ultimately determine how much new light will come into existence within it.<\/p>","protected":false},"excerpt":{"rendered":"

Una galaxia no termina donde dejamos de ver sus estrellas. Mucho m\u00e1s all\u00e1 existe una inmensa envoltura de gas conocida como medio circumgal\u00e1ctico, o CGM. Es una regi\u00f3n gigantesca que puede extenderse entre diez y veinte veces m\u00e1s que la parte visible de una galaxia y funciona como una especie de dep\u00f3sito de combustible c\u00f3smico. […]<\/p>\n","protected":false},"author":284226809,"featured_media":1596,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_wpcom_ai_launchpad_first_post":false,"_jetpack_hide_featured_image":false,"_jetpack_featured_image_duplicate_dismissed":0,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[33205457,3213,33205423],"tags":[33206055,33205867,33206066,33205584,33205574,33206056,33205576,33206060,33206065,33206059,33206054,33206064,33206063,33206062,33206058,33206057,33206061,33205477],"class_list":["post-1593","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-al-dia","category-ciencia","category-cosmos","tag-agujero-negro-supermasivo","tag-agujeros-negros","tag-arizona-state-university","tag-astrofisica","tag-astronomia","tag-desi","tag-espacio","tag-estrellas","tag-evolucion-galactica","tag-formacion-estelar","tag-galaxias","tag-h-alfa","tag-hidrogeno-ionizado","tag-jets-de-plasma","tag-lofar","tag-lotss","tag-medio-circumgalactico","tag-universo"],"acf":{"introduccion":"

En el centro de una galaxia puede esconderse un objeto relativamente diminuto comparado con los cientos de miles de millones de estrellas que lo rodean. Sin embargo, su influencia puede extenderse cientos de miles de a\u00f1os luz y terminar decidiendo algo monumental: si esa galaxia continuar\u00e1 fabricando estrellas o comenzar\u00e1 lentamente a apagarse. Astr\u00f3nomos han encontrado ahora una de las evidencias observacionales m\u00e1s claras de c\u00f3mo los chorros lanzados por agujeros negros supermasivos alcanzan mucho m\u00e1s all\u00e1 de la galaxia visible y alteran precisamente el gas del que deber\u00edan nacer futuras generaciones de estrellas.<\/h2>","fuentes_y_referencias":"Arizona State University \u2014 estudio y explicaci\u00f3n completa<\/a> \u00b7 EurekAlert \u2014 publicaci\u00f3n cient\u00edfica y datos del estudio<\/a>","autor":[748]},"yoast_head":"\nDESCUBREN C\u00d3MO UN AGUJERO NEGRO PUEDE \u201cAPAGAR\u201d UNA GALAXIA - Ca\u00f1asanta<\/title>\n<meta name=\"description\" content=\"Astr\u00f3nomos descubren c\u00f3mo los poderosos jets de agujeros negros alteran el gas que alimenta nuevas estrellas y pueden cambiar el destino de galaxias enteras.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/canasanta.ca\/en\/daily\/scientists-discover-how-a-black-hole-can-shut-down-a-galaxy\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"DESCUBREN C\u00d3MO UN AGUJERO NEGRO PUEDE \u201cAPAGAR\u201d UNA GALAXIA\" \/>\n<meta property=\"og:description\" content=\"Astr\u00f3nomos descubren c\u00f3mo los poderosos jets de agujeros negros alteran el gas que alimenta nuevas estrellas y pueden cambiar el destino de galaxias enteras.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/canasanta.ca\/en\/daily\/scientists-discover-how-a-black-hole-can-shut-down-a-galaxy\/\" \/>\n<meta property=\"og:site_name\" content=\"Ca\u00f1asanta\" \/>\n<meta property=\"article:published_time\" content=\"2026-09-24T23:51:22+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/i0.wp.com\/canasanta.ca\/wp-content\/uploads\/2026\/09\/CS_2BlackHoles001.jpg?resize=1200,630&quality=85&strip=all&ssl=1\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"630\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Ca\u00f1asanta\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Ca\u00f1asanta\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/canasanta.ca\\\/al-dia\\\/descubren-como-un-agujero-negro-puede-apagar-una-galaxia\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/canasanta.ca\\\/al-dia\\\/descubren-como-un-agujero-negro-puede-apagar-una-galaxia\\\/\"},\"author\":{\"name\":\"Ca\u00f1asanta\",\"@id\":\"https:\\\/\\\/canasanta.ca\\\/#\\\/schema\\\/person\\\/21421a3c6f1733be6c5c590190fd8e93\"},\"headline\":\"DESCUBREN C\u00d3MO UN AGUJERO NEGRO PUEDE \u201cAPAGAR\u201d UNA GALAXIA\",\"datePublished\":\"2026-09-24T23:51:22+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/canasanta.ca\\\/al-dia\\\/descubren-como-un-agujero-negro-puede-apagar-una-galaxia\\\/\"},\"wordCount\":1194,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/canasanta.ca\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/canasanta.ca\\\/al-dia\\\/descubren-como-un-agujero-negro-puede-apagar-una-galaxia\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/i0.wp.com\\\/canasanta.ca\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/CS_2BlackHoles001.jpg?fit=1200%2C631&quality=82&strip=all&ssl=1\",\"keywords\":[\"agujero negro supermasivo\",\"agujeros negros\",\"Arizona State University\",\"astrof\u00edsica\",\"astronom\u00eda\",\"DESI\",\"espacio\",\"estrellas\",\"evoluci\u00f3n gal\u00e1ctica\",\"formaci\u00f3n estelar\",\"galaxias\",\"H-alfa\",\"hidr\u00f3geno ionizado\",\"jets de plasma\",\"LOFAR\",\"LoTSS\",\"medio circumgal\u00e1ctico\",\"universo\"],\"articleSection\":[\"AL D\u00cdA!\",\"Ciencia\",\"Cosmos\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/canasanta.ca\\\/al-dia\\\/descubren-como-un-agujero-negro-puede-apagar-una-galaxia\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/canasanta.ca\\\/al-dia\\\/descubren-como-un-agujero-negro-puede-apagar-una-galaxia\\\/\",\"url\":\"https:\\\/\\\/canasanta.ca\\\/al-dia\\\/descubren-como-un-agujero-negro-puede-apagar-una-galaxia\\\/\",\"name\":\"DESCUBREN C\u00d3MO UN AGUJERO NEGRO PUEDE \u201cAPAGAR\u201d UNA GALAXIA - 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Este 12 de noviembre, la misi\u00f3n europea Euclid ha abierto una ventana extraordinaria a esas historias con la divulgaci\u00f3n de su primer gran conjunto de observaciones: un inventario que abarca m\u00e1s de\u2026","rel":"","context":"In "AL D\u00cdA!"","block_context":{"text":"AL D\u00cdA!","link":"https:\/\/canasanta.ca\/en\/category\/al-dia\/"},"img":{"alt_text":"Galaxias Messier 81 y NGC 3077 fotografiadas por Euclid","src":"https:\/\/i0.wp.com\/canasanta.ca\/wp-content\/uploads\/2026\/11\/Euclid-%E2%80%94-Messier-81-y-NGC-3077-ESAEuclidEuclid-ConsortiumNASA-J.-C.-Cuillandre-y-E.-Bertin-CC-BY-SA-3.0-IGO.jpg?fit=1200%2C675&quality=82&strip=all&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/canasanta.ca\/wp-content\/uploads\/2026\/11\/Euclid-%E2%80%94-Messier-81-y-NGC-3077-ESAEuclidEuclid-ConsortiumNASA-J.-C.-Cuillandre-y-E.-Bertin-CC-BY-SA-3.0-IGO.jpg?fit=1200%2C675&quality=82&strip=all&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/canasanta.ca\/wp-content\/uploads\/2026\/11\/Euclid-%E2%80%94-Messier-81-y-NGC-3077-ESAEuclidEuclid-ConsortiumNASA-J.-C.-Cuillandre-y-E.-Bertin-CC-BY-SA-3.0-IGO.jpg?fit=1200%2C675&quality=82&strip=all&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/canasanta.ca\/wp-content\/uploads\/2026\/11\/Euclid-%E2%80%94-Messier-81-y-NGC-3077-ESAEuclidEuclid-ConsortiumNASA-J.-C.-Cuillandre-y-E.-Bertin-CC-BY-SA-3.0-IGO.jpg?fit=1200%2C675&quality=82&strip=all&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/canasanta.ca\/wp-content\/uploads\/2026\/11\/Euclid-%E2%80%94-Messier-81-y-NGC-3077-ESAEuclidEuclid-ConsortiumNASA-J.-C.-Cuillandre-y-E.-Bertin-CC-BY-SA-3.0-IGO.jpg?fit=1200%2C675&quality=82&strip=all&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":6610,"url":"https:\/\/canasanta.ca\/en\/ciencia\/cosmos\/37-galaxias-enanas-misterio-oxigeno-perdido\/","url_meta":{"origin":1593,"position":5},"title":"37 GALAXIAS ENANAS ESCONDEN EL MISTERIO DEL OX\u00cdGENO PERDIDO","author":"Ca\u00f1asanta","date":"November 2, 2026","format":false,"excerpt":"Un estudio de 37 galaxias enanas cercanas ha encontrado algo que no encaja con lo esperado: gran parte del ox\u00edgeno producido por sus estrellas parece haber desaparecido. El resultado obliga a mirar de nuevo c\u00f3mo las galaxias peque\u00f1as fabrican, retienen y expulsan los elementos pesados que terminan formando nuevas estrellas,\u2026","rel":"","context":"In "AL D\u00cdA!"","block_context":{"text":"AL D\u00cdA!","link":"https:\/\/canasanta.ca\/en\/category\/al-dia\/"},"img":{"alt_text":"Galaxia enana NGC 4449 observada por el telescopio espacial Hubble, con regiones de formaci\u00f3n estelar y gas brillante.","src":"https:\/\/i0.wp.com\/canasanta.ca\/wp-content\/uploads\/2026\/11\/NGC-4449-%E2%80%94-galaxia-enana-estudiada-por-Hubble.jpg?fit=1200%2C900&quality=82&strip=all&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/canasanta.ca\/wp-content\/uploads\/2026\/11\/NGC-4449-%E2%80%94-galaxia-enana-estudiada-por-Hubble.jpg?fit=1200%2C900&quality=82&strip=all&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/canasanta.ca\/wp-content\/uploads\/2026\/11\/NGC-4449-%E2%80%94-galaxia-enana-estudiada-por-Hubble.jpg?fit=1200%2C900&quality=82&strip=all&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/canasanta.ca\/wp-content\/uploads\/2026\/11\/NGC-4449-%E2%80%94-galaxia-enana-estudiada-por-Hubble.jpg?fit=1200%2C900&quality=82&strip=all&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/canasanta.ca\/wp-content\/uploads\/2026\/11\/NGC-4449-%E2%80%94-galaxia-enana-estudiada-por-Hubble.jpg?fit=1200%2C900&quality=82&strip=all&ssl=1&resize=1050%2C600 3x"},"classes":[]}],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/canasanta.ca\/wp-content\/uploads\/2026\/09\/CS_2BlackHoles001.jpg?fit=1200%2C631&quality=82&strip=all&ssl=1","_links":{"self":[{"href":"https:\/\/canasanta.ca\/en\/wp-json\/wp\/v2\/posts\/1593","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/canasanta.ca\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/canasanta.ca\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/canasanta.ca\/en\/wp-json\/wp\/v2\/users\/284226809"}],"replies":[{"embeddable":true,"href":"https:\/\/canasanta.ca\/en\/wp-json\/wp\/v2\/comments?post=1593"}],"version-history":[{"count":3,"href":"https:\/\/canasanta.ca\/en\/wp-json\/wp\/v2\/posts\/1593\/revisions"}],"predecessor-version":[{"id":1597,"href":"https:\/\/canasanta.ca\/en\/wp-json\/wp\/v2\/posts\/1593\/revisions\/1597"}],"acf:post":[{"embeddable":true,"href":"https:\/\/canasanta.ca\/en\/wp-json\/wp\/v2\/autor\/748"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/canasanta.ca\/en\/wp-json\/wp\/v2\/media\/1596"}],"wp:attachment":[{"href":"https:\/\/canasanta.ca\/en\/wp-json\/wp\/v2\/media?parent=1593"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/canasanta.ca\/en\/wp-json\/wp\/v2\/categories?post=1593"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/canasanta.ca\/en\/wp-json\/wp\/v2\/tags?post=1593"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}