#BlackHoles En ciencia, una sola ecuación puede transformar nuestra visión del universo. La métrica de Kerr es uno de los mejores ejemplos de ello.
#black-holes — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #black-holes, aggregated by home.social.
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#BlackHoles En ciencia, una sola ecuación puede transformar nuestra visión del universo. La métrica de Kerr es uno de los mejores ejemplos de ello.
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https://www.europesays.com/ie/735296/ NASA’s Chandra Breaks Down ‘Treble Clef’s’ Galaxy Cluster Collision #BlackHoles #ChandraXRayObservatory #Éire #IE #Ireland #MarshallAstrophysics #MarshallScienceResearch&Projects #MarshallSpaceFlightCenter #Science #Space #SupermassiveBlackHoles #TheUniverse
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https://www.europesays.com/uk/1254115/ NASA’s Chandra Breaks Down ‘Treble Clef’s’ Galaxy Cluster Collision #BlackHoles #ChandraXRayObservatory #MarshallAstrophysics #MarshallScienceResearch&Projects #MarshallSpaceFlightCenter #Science #Space #SupermassiveBlackHoles #TheUniverse #UK #UnitedKingdom
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#BlackHoles La influencia de Roy Kerr trasciende su solución original. Su trabajo ayudó a redefinir la dirección de la investigación gravitatoria.
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#BlackHoles La influencia de Roy Kerr trasciende su solución original. Su trabajo ayudó a redefinir la dirección de la investigación gravitatoria.
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#BlackHoles Algunas de las ideas más modernas sobre agujeros negros tienen sus raíces en conceptos introducidos por Kerr en los años sesenta.
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#BlackHoles Algunas de las ideas más modernas sobre agujeros negros tienen sus raíces en conceptos introducidos por Kerr en los años sesenta.
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Astronomers witness supermassive black hole gorge on a cosmic meal before 'burping' radio jets 300 days later
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#BlackHoles El estudio del espacio-tiempo de Kerr sigue generando nuevas preguntas más de medio siglo después de su descubrimiento.
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#BlackHoles El estudio del espacio-tiempo de Kerr sigue generando nuevas preguntas más de medio siglo después de su descubrimiento.
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Physical Review D
Primordial black holes are five dimensional
https://journals.aps.org/prd/abstract/10.1103/g12h-93thI found an article on this on the Daily Mail website, which for once had a link to the above. Seems interesting. I perhaps need to re-read parts of my Open University book on How the universe works, as a refresh for Brane and String theory. But it does seem interesting.
Going by the DM comments the term 'Big Bang' is still causing confusion, as it implies an explosion, rather than inflation.
#Science
#Physics
#Cosmology
#Blackholes
#Dimentions
#BraneTheory
#StringTheory -
World's timekeepers will vote to ditch the 'leap second' this week
By Ellen PhiddianClocks occasionally go backwards for a second to keep Earth time in sync with the stars. But the powers that govern time measurement are about to vote to end the practice.
#ScienceandTechnology #Science #Space #Physics #Telescopes #Blackholes #EarthScience #ComputerScience #EllenPhiddian
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#BlackHoles La solución de Kerr mostró que la rotación no es una complicación secundaria, sino un componente esencial de la realidad cósmica.
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#BlackHoles La solución de Kerr mostró que la rotación no es una complicación secundaria, sino un componente esencial de la realidad cósmica.
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#BlackHoles El universo proporciona escenarios naturales donde las ecuaciones de Einstein pueden explorarse mucho más allá de las condiciones accesibles en la Tierra.
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#BlackHoles El universo proporciona escenarios naturales donde las ecuaciones de Einstein pueden explorarse mucho más allá de las condiciones accesibles en la Tierra.
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On this day in 2024, HWGGW 3 launched on Chang Zheng 3B G2. But where's NASA's NuSTAR right now?
Our live tracker reveals its real-time position, tracing its journey as it delves into high-energy mysteries from black holes to supernova remnants.
Watching NuSTAR means getting a front-row seat to cosmic phenomena unfolding above.#NuSTAR #SpaceScience #BlackHoles #Astronomy
Discover the live tracker: https://orbitalradar.com/nustar-tracker?ref=mastodon
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https://www.europesays.com/ie/728568/ Reading Motion in Light – NASA Science #BlackHoles #Éire #IE #Ireland #JamesWebbSpaceTelescope(JWST) #Science #Space
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Betelgeuse vs. WOH G64: Which One Will Explode First — and Which Will Shine Brighter?
https://buymeacoffee.com/newscafe/betelgeuse-vs-woh-g64-which-one-will-explode-first-which-will-shine-brighter
#sun #betelgeuse #cosmos #universe #astronomy #space #science #blackholes -
#BlackHoles La combinación de gravedad intensa y rotación rápida produce fenómenos imposibles de reproducir en laboratorios terrestres.
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Active Galactic Nucleus Tori - Potential Birthplace to Millions of Planets: https://iopscience.iop.org/article/10.3847/1538-4357/ae6f0b -> #BlackHoles could birth planets and even stars, study finds: https://www.wionews.com/trending/not-just-killers-but-creators-black-holes-could-birth-planets-and-even-stars-study-finds-1791470887524
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A Scientist Working on the ‘IceCube’ Neutrino Detector Explains the Nobel Prize–Winning Technology
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A Scientist Working on the ‘IceCube’ Neutrino Detector Explains the Nobel Prize–Winning Technology
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#BlackHoles Los agujeros negros rotatorios ofrecieron un marco teórico prometedor para comprender algunas de las fuentes más energéticas del universo.
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#BlackHoles Los agujeros negros rotatorios ofrecieron un marco teórico prometedor para comprender algunas de las fuentes más energéticas del universo.
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Wandering black holes drifting through galaxies for billions of years may hold clues to how the universe evolved
https://www.universetoday.com/articles/wandering-black-holes-may-hold-clues-to-the-evolution-of-the-universe
According to new research, "wandering" black holes may have left an imprint on the Universe as they traveled for billions of years.
#science #astronomy #blackholes -
#BlackHoles Los cuásares despertaron gran interés porque parecían liberar cantidades inmensas de energía desde regiones muy compactas del espacio.
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#BlackHoles Los cuásares despertaron gran interés porque parecían liberar cantidades inmensas de energía desde regiones muy compactas del espacio.
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According to new research, "wandering" black holes may have left an imprint on the Universe as they traveled for billions of years. #science #astronomy #blackholes
Posted into FLIPBOARD EXCHANGE FEED 🗞️ @flipboard-exchange-feed-Econopass
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#BlackHoles La métrica de Kerr pasó de ser una curiosidad matemática a convertirse en una herramienta cotidiana para los astrofísicos.
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#BlackHoles La métrica de Kerr pasó de ser una curiosidad matemática a convertirse en una herramienta cotidiana para los astrofísicos.
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#BlackHoles Algunas soluciones exactas son útiles. Otras cambian por completo una disciplina científica. La de Kerr pertenece claramente a la segunda categoría.
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#BlackHoles Algunas soluciones exactas son útiles. Otras cambian por completo una disciplina científica. La de Kerr pertenece claramente a la segunda categoría.
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#BlackHoles La comunidad relativista comprendió rápidamente que la solución de Kerr marcaría un antes y un después en la teoría gravitatoria.
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#BlackHoles La comunidad relativista comprendió rápidamente que la solución de Kerr marcaría un antes y un después en la teoría gravitatoria.
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„A Brief History of Time“ by Stephen Hawking theoretical cosmology for anyone one of the greatest minds giving everyone a chance to get a better understanding of #blackholes, the #BigBang & so much more. #mustread #bookstodon #books #literature
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RE: https://flipboard.com/@spacecom/space.com-06o8ff5iz/-/a-LulUdYExQ5qAoyzVRFd8bw%3Aa%3A1693190246-%2F0
Massive #blackholes #reddots, imaged by the James Webb Space Telescope (#JWST), were long considered a mystery. They are #supermassive black holes from the early universe, dating back to before it was a billion years old. Due to angular momentum, infalling #gas formed a visible #envelope surrounding the hole. #Electromagneticradiation passing through this envelope undergoes a wavelength shift, appearing as a compact structure with a #redspectrum.
© #StefanFWirthReference
S. Chon et al. (2026) -
#BlackHoles El éxito de Kerr reforzó la confianza en que las ecuaciones de Einstein podían describir fenómenos reales incluso en condiciones extremas.
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#BlackHoles El éxito de Kerr reforzó la confianza en que las ecuaciones de Einstein podían describir fenómenos reales incluso en condiciones extremas.
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Dr. Becky #Smethurst an astrophysicist at the University of Oxford making videos explaining the Universe. She's amazingly brilliant!!! Just sayin'
"A star so close to the Milky Way’s black hole it feels its spin "
#Space #Astrophysics #News #Science #Education #UK #Genius #Astronomy #BlackHoles #Cosmology #Technology
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#BlackHoles La historia demuestra que los avances más profundos suelen surgir cuando una idea matemática encuentra finalmente una aplicación física.
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#BlackHoles El descubrimiento de Kerr transformó un problema puramente matemático en una herramienta esencial para la astrofísica observacional.
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#BlackHoles El descubrimiento de Kerr transformó un problema puramente matemático en una herramienta esencial para la astrofísica observacional.
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Another beautiful name offered by the A Hua He Inoa program: Nāpōwawā‘enakaulua, meaning: “Two celestial bodies of fathomless powerful darkness (black holes) in the brilliance of heat reincarnating energy into the Universe” in the indigenous Hawaiian language.
https://arxiv.org/abs/2609.31835
#Cosmology #Astrophysics #astrodon #Hawaii #Hawaiian #quasar #galaxies #blackholes #science #astronomy #news
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“A physicist is just an atom’s way of looking at itself”*…
Encouraged by successes in understanding black holes, theoretical physicists are applying what they’ve learned to whole universes. As Matt von Hippel explains, what they’re finding has them questioning fundamental assumptions about how physics ought to be done…
Tinkering at their desks with the mathematics of quantum space and time, physicists have discovered a puzzling conundrum. The arcane rules of quantum theory and gravity let them imagine many different kinds of universes in precise detail, enabling powerful thought experiments that in recent years have addressed long-standing mysteries swirling around black holes.
But when a group of researchers examined a universe intriguingly like our own in 2019, they found a paradox: The theoretical universe seemed to admit only a single possible state. It appeared so simple that its contents could be described without conveying even a single bit of data, not even a choice of a zero or a one. This result clashed with the fact that this type of universe should be capable of hosting black holes, stars, planets — and people. Yet all those rich details were nowhere to be seen.
“We look around, and certainly the world seems more complex than that,” said Rob Myers, a theoretical physicist at the Perimeter Institute for Theoretical Physics in Waterloo, Canada, who has not been directly involved in this research.
Physicists have good reason to trust the calculation, which builds on fundamental physical ideas. The math implies a universe with only one state; our universe is clearly not like that. Now a team of theorists has floated a possible answer. The paradoxical result occurred when physicists sought an objective description of the state of an entire universe. But a description like that might not be possible, even in principle. It implicitly assumes a universe that exists without an observer to observe it. And perhaps without observers, the complexity of the universe loses its meaning…
[von Hippel unpacks the scientific thinking that led to this conundrum. He concludes with an account of recent work by Ying Zhao that hints at a resolution…]
… Quantum mechanics requires a distinction between an observer — such as the scientist carrying out an experiment — and the system they observe. The system tends to be something small and quantum, like an atom. The observer is big and far away, and thus well described by classical physics… Perhaps an observer could do the same to these closed, impossibly simple-seeming universes?
In 2024, Zhao moved to the Massachusetts Institute of Technology, where she began to work on the problem of how to put an observer into a closed universe. She and two colleagues —Daniel Harlow and Mykhaylo Usatyuk — thought of the observer as introducing a new kind of boundary: not the edge of the universe, but the boundary of the observer themself. When you consider a classical observer inside a closed universe, all the complexity of the world returns, Zhao and her collaborators showed.
The MIT team’s paper came out at the beginning of 2025, around the same time that another group came forward with a similar idea. Others chimed in to point out connections to earlier work.
At this stage, everyone involved emphasizes that they don’t know the full solution. The paradox itself may be a misunderstanding, one that evaporates with a new argument. But so far, adding an observer to the closed universe and trying to account for their presence may be the safest path.
“Am I really confident to say that it’s right, it’s the thing that solves the problem? I cannot say that. We try our best,” Zhao said…
“Cosmic Paradox Reveals the Awful Consequence of an Observer-Free Universe,” from @quantamagazine.org.
Apposite: “Biology Might Not Be Quantum, but Its Math Is Quantumlike“
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As we keep an eye out, we might send cosmological birthday greetings to Enrico Fermi; he was born on this date in 1901. A physicist and Nobel Laureate (1938) for his discovery of nuclear reactions brought about by slow neutrons, he is best remembered for (literally) presiding over the birth of the Atomic Age. Fermi was perhaps especially remarkable as the last “double-threat” in his field: a genius at creating both important theories and elegant experiments. As observed before (and illustrated above :), the division of labor between theorists and experimentalists has since been pretty complete.
The novelist and historian of science C. P. Snow wrote that “if Fermi had been born a few years earlier, one could well imagine him discovering Rutherford’s atomic nucleus, and then developing Bohr’s theory of the hydrogen atom. If this sounds like hyperbole, anything about Fermi is likely to sound like hyperbole.”
#AtomicAge #blackHoles #culture #EnricoFermi #Fermi #history #Mathematics #observer #philosophy #Physics #quantumMechanics #quantumTheory #reality #Science #Universe -
#BlackHoles Muchos fenómenos observados cerca de núcleos galácticos activos serían difíciles de interpretar sin la geometría propuesta por Kerr.
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#BlackHoles Muchos fenómenos observados cerca de núcleos galácticos activos serían difíciles de interpretar sin la geometría propuesta por Kerr.
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#BlackHoles Muchos fenómenos observados cerca de núcleos galácticos activos serían difíciles de interpretar sin la geometría propuesta por Kerr.
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#BlackHoles La luz también siente la influencia de la rotación. Sus trayectorias pueden curvarse de formas distintas según el sentido de movimiento.
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#BlackHoles El estudio de órbitas alrededor de agujeros negros rotatorios es fundamental para interpretar observaciones astronómicas modernas.
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#BlackHoles Algunas trayectorias imposibles alrededor de un objeto estático se vuelven viables cuando la rotación entra en juego.
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The new @LIGO Magazine, issue #29, is out now!
Read it at https://www.aei.mpg.de/1513197/LIGO-magazine-issue29.pdf [PDF] and learn more about a major LIGO hardware upgrade, the latest gravitational-wave catalog, how to “autotune” gravitational-wave detectors, and much more.
All issues of the LIGO Magazine are hosted on our homepage at https://www.aei.mpg.de/26348/ligo-magazine.
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#TachyonBeam #astronomy #stars #BlackHoles #SMBH
An article published in the journal "Nature Astronomy" reports the results of a study on the formation of jets of materials by black holes, identifying a rule that appears to be independent of their mass. By analyzing the collected data, the researchers concluded that all black holes emit powerful jets of material at the same stage of their accretion cycle, a stage linked solely to the rate at which the black hole feeds.
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Black Holes or Black Hole Stars? Astronomers Spar over 'Little Red Dots'
Comments: https://news.ycombinator.com/item?id=49756121
#HackerNews #blackholes #blackholestars #astronomy #JWST #spaceexploration #astrophysics
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‘Very messy eaters’: scientists solve the mystery of when black holes ‘burp’ https://www.theguardian.com/science/2026/sep/17/black-hole-burps-scientists-solve-mystery-astronomy #Space #Science #BlackHoles #Astronomy
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‘Very messy eaters’: scientists solve the mystery of when black holes ‘burp’
By Donna LuThe astronomical bodies fire off powerful jets in two distinct phases in their feeding cycle, researchers discover
https://www.theguardian.com/science/2026/sep/17/black-hole-burps-scientists-solve-mystery-astronomy
#Space #Science #Blackholes #Astronomy #TheGuardian #DonnaLu
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Black holes may grow along with the expansion of the universe.
I've wondered if pulling spacetime into a black hole doesn't cause more spacetime to come into existence, and thus more time, as well as space.
A physicist has already griped about this paper, a common occurrence, as they would, and should, about my speculations, lol.
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A large population of overmassive black hole quasars at z=0.3-0.8 revealed by eROSITA: https://www.aanda.org/component/article?access=doi&doi=10.1051/0004-6361/202659356 -> #BlackHoles outgrow their galaxies: https://www.mpg.de/26963661/black-holes-outgrow-their-galaxies?c=2249 - the eRosita X-ray telescope has discovered eight galaxies whose central black holes are significantly more massive than those in other galaxies
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Need some science for your break? We've got just the thing for you!
Becky Smethurst's (Dr. Becky's) last video is on @LISA, “ The new observatory so big it can’t be built on Earth”.
🎞️ https://www.youtube.com/watch?v=8JvIJUHvQvQ
Learn more about LISA and our institute's contributions to this amazing ESA mission of discovery on our homepage: https://www.aei.mpg.de/lisa.