Date: 22/05/2026 17:01:34
From: Tau.Neutrino
ID: 2393887
Subject: Black Holes
The lives of black holes, from birth to death
A quest to understand the most bizarre objects in the universe unveils many surprises
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The lives of black holes, from birth to death
A quest to understand the most bizarre objects in the universe unveils many surprises
More…
Faint black hole ‘ringing’ provides a sharper test of Einstein’s gravity
When two black holes crash together, the violence does not end at impact. The newly formed black hole keeps shaking, shedding energy as gravitational waves while it settles down. Physicists call that phase the ringdown, and it carries some of the cleanest clues available about what a black hole really is under Einstein’s theory of gravity.
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Failed supernova provides clearest view yet of a star collapsing into a black hole
Astronomers have watched a dying star fail to explode as a supernova, instead collapsing into a black hole. The remarkable sighting is the most complete observational record ever made of a star’s transformation into a black hole, allowing astronomers to construct a comprehensive physical picture of the process.
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Ta.
Peak Warming Man said:
Ta.
Ta, as well.
Hypothetical Boson Star
Hunting dark matter ‘stars’ that mimic black holes
Hypothetical dark matter stars known as “boson stars” could leave telltale ripples across the cosmos, offering researchers a new way to probe the invisible forces shaping the universe. In 2019, a strange event was observed in the depths of space. Called GW190521, the event sent out gravitational waves—invisible ripples in the universe—that were picked up on Earth. These waves appeared to mark the moment when two massive black holes, dozens of times the mass of our sun, collided and merged. Or at least, that was the initial theory.
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Here is a 12 min youtube video of the failed supernova.
Tau.Neutrino said:
Here is a 12 min youtube video of the failed supernova.
TIL that can happen. Cool.
Tau.Neutrino said:
Here is a 12 min youtube video of the failed supernova.
Very interesting.
The most massive black holes in the universe detected by the ripples they make in spacetime were not born directly from collapsing stars, according to a new study. These cosmic giants instead build up through a series of repeated and extremely violent collision events in very densely populated star clusters, an international team of researchers argue.
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Peak Warming Man said:
Tau.Neutrino said:
Here is a 12 min youtube video of the failed supernova.Very interesting.
or as Stephen Fry would have it, Quite Interesting.
Massive stars may explode without forming black holes: Study
A supernova – the explosive death of a star – is always violent, blasting material into space while typically leaving behind a compact stellar remnant like a neutron star or black hole. But some supernovas involving the largest stars in the cosmos may be so immensely powerful that they leave absolutely nothing behind.
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Strange ripples in space may point to dark matter near merging black holes
A 2019 black hole merger may hold one of the first gravitational-wave hints of dark matter.
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Gravitational wave detectors can now tune themselves using black holes
LIGO scientists used black hole signals to correct detector errors and improve cosmic event measurements.
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An explanation for the massive black holes the JWST found in the early universe
One of the most puzzling findings from the JWST’s observations of the early universe is the size of black holes. According to our understanding of black hole growth, these early black holes are far more massive than expected. Astronomers expected the unexpected from JWST, and it has delivered. Now the challenge is to update models of the universe to include these new observations.
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Statistical technique could uncover secrets of ‘ringing’ black holes
Researchers have developed a technique to analyze how black holes “ring” when they collide and merge: one of the universe’s most dramatic events. When black holes merge, the collision produces a new, larger black hole that “rings” like a plucked guitar string or a bell while it settles into its final, stable shape. But instead of sound waves, the new black hole rings with gravitational waves: ripples in spacetime first predicted by Albert Einstein.
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Tiny black holes may form out of a crystal-like state in spacetime
Physicists found an exact formula for the unstable spacetime pattern that can collapse into a tiny black hole.
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Supermassive Black Holes Can Render Exoplanets Uninhabitable at Great Distances
The thinking around exoplanet habitability is mostly concerned with a planet’s distance from its star. Too close, and any surface water is boiled away into space. Too far, and surface water is frozen. Both are severe limits on the prospects for life. Habitability depends on an exoplanet being in the Goldilocks Zone, a distance range around a star where liquid water can persist.
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The most massive black holes in the universe detected by the ripples they make in spacetime were not born directly from collapsing stars, according to a new study. These cosmic giants instead build up through a series of repeated and extremely violent collision events in very densely populated star clusters, an international team of researchers argue.
More…
Black hole jets measured in real time, revealing 10,000-sun power
For the first time, scientists have measured the instantaneous mind-blowing power of jets blasting from a black hole.
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Black holes don’t live forever, but they might live long enough to look like white holes
Black holes live forever, at least according to general relativity. Once material crosses a black hole’s event horizon, it is trapped forever, until the last day of cosmic time. But we know that isn’t true. General relativity is a classical model. It doesn’t take into account the fuzzy, indeterminate nature of the quantum. We don’t have a complete and consistent theory of quantum gravity, but we do have some understanding of quantum black holes.
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JWST spots two early black holes growing far faster than their galaxies
Astronomers have discovered two early-universe galaxies where the central black holes appear to have grown far faster than their host galaxies. Observations with the James Webb Space Telescope (JWST) reveal that the black holes in these galaxies, seen just 800 million years after the Big Bang, are significantly more massive relative to their host galaxies, as opposed to what astronomers see in the nearby universe. The study is published on the arXiv preprint server.
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Scientists may have found the source of the most powerful neutrino ever detected
A record-shattering particle from deep space may have exposed some of the universe’s most extreme black hole engines.
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Heavily reddened quasars caught going through a ‘blow-out’ phase
At the center of most large galaxies sits a supermassive black hole (SMBH). When these black holes are actively consuming material, they become incredibly luminous quasars. But some quasars appear wrapped in thick clouds of dust, making them hard to detect. In a new study, astronomers have revealed 77 new, hidden, “heavily reddened” quasars (HRQs).
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LIGO Detects Most Massive Black Hole Merger to Date
The LIGO-Virgo-KAGRA (LVK) Collaboration has detected the merger of the most massive black holes ever observed with gravitational waves using the US National Science Foundation (NSF)-funded LIGO observatories. The powerful merger produced a final black hole approximately 225 times the mass of our Sun. The signal, designated GW231123, was detected during the fourth observing run of the LVK network on November 23, 2023.
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