The discovery hints that "intermediate mass" black holes may be peppered throughout the universe.
As astronomers continue to take stock of the universe's black holes, it's becoming increasingly obvious that they're missing something big. The cosmic dead ends come in two sizes, small and impossibly large, with a glaring gap in the middle.
Researchers tally up the pipsqueak "stellar mass" black holes, which weigh dozens of times the mass of our sun, primarily through the spacetime ripples sent out when pairs collide. These black holes are the familiar tombstones left behind after stars die and explode as supernovae.
Mystery About How Particles Behave Outside a Black Hole Photon Sphere Solved With String Theory
An artist’s impression of a “string” passing near a black hole. As the string approaches the black hole, it is gradually stretched. Then, as it moves past the black hole, it begins to vibrate. The image to the left, which was captured by the Event Horizon Telescope, represents the shadow of the supermassive black hole at the center of the galaxy M87, including the ring of light around it.
In a quantum theory of point particles, a fundamental quantity is the correlation function, which measures the probability for a particle to propagate from one point to another. The correlation function develops singularities when the two points are connected by light-like trajectories. In a flat spacetime, there is such a unique trajectory, but when spacetime is curved, there can be many light-like trajectories connecting two points.
Understanding Mind-Bending Black Holes | National Air and Space Museum
We've wanted to break down black holes on the AirSpace podcast for a while now - if only so that we could better understand them ourselves (they're among the most mysterious phenomena in the universe, can you blame us?).
The concept of black holes isn't new — scientists first theorized their existence in the early 20th century. But in the last few years, our knowledge of black holes has expanded exponentially — from the confirmation of supermassive black holes at the center of galaxies to the first ever image of a black hole captured by the Event Horizon Telescope.
This is the most intimate portrait yet of a black hole | Deccan Herald
The Event Horizon Telescope collaboration, an international team of radio astronomers that has been staring down the throat of a giant black hole for years, has published what it called the most intimate portrait yet of the forces that give rise to quasars, the luminous fountains of energy that can reach across interstellar and intergalactic space and disrupt the growth of distant galaxies.
The monstrous black hole is 6.5 billion times as massive as the sun, and it lies in the center of an enormous elliptical galaxy, Messier 87, about 55 million light-years away in the constellation Virgo. Two years ago, the team photographed it, producing the first image of a black hole. The previously invisible entity — a porthole to eternity — looked like a fuzzy smoke ring, much as Albert Einstein's equations had predicted a century ago.
Global Telescope Creates Exquisite Map of Black Hole's Swirling Magnetic Field
A new view of the region closest to the supermassive black hole at the center of the galaxy has shown important details of the magnetic fields close to it—and hints about how powerful jets of material can originate in that region.
A worldwide team of astronomers using the Event Horizon Telescope (EHT) measured a signature of magnetic fields—called polarization—around the black hole. Polarization is the orientation of the electric fields in light and radio waves, and it can indicate the presence and alignment of magnetic fields.
Black hole pairs found in distant merging galaxies | EurekAlert! Science News
VIDEO: CosmoView Episode 26: Black Hole Pairs Found in Distant Merging Galaxies view more
Credit: International Gemini Observatory/NOIRLab/NSF/AURA/J. da Silva/J. Pollard Music: Stellardrone - Airglow
Astronomers have found two close pairs of quasars in the distant Universe. Follow-up observations with Gemini North spectroscopically resolved one of the distant quasar pairs, after their discovery with the Hubble Space Telescope and Gaia spacecraft. These quasars are closer together than any pair of quasars found so far away, providing strong evidence for the existence of supermassive black hole pairs as well as crucial insight into galaxy mergers in the early Universe.
GOP a black hole | Letters | timesargus.com
Perhaps it is not difficult to understand black holes, for the Republican Party is a black hole that has been consumed by the darkness of its lost soul.
As you stated………."an infrastructure bill that will provide a multitude of jobs for working people and lead us into the 21st century's need for clean-energy occupations." One question, who is going to pay for this wonderful tax and spend bill?
An Intermediate-Mass Black Hole Discovered Through the Gravitational Lensing of a Gamma-ray Burst
One of the biggest difficulties in studying IMBHs is that they are difficult to find. We think they are formed when large stars or stellar-mass black holes merge in the centers of globular clusters, so they tend to be obscured within a dense cluster of bright stars. Intermediate black holes usually aren’t active, so we also can’t identify them by their jets or intense x-rays. But they should be fairly common.
Recently a team has used a new technique to find one of them. Their method uses gamma-ray bursts and gravitational lensing. A gamma ray burst (GRB) is a bright flash of gamma rays that occurs from time to time. They are likely caused when a large star explodes as a hypernova, or when two large stars collide and merge.
Leftover Salmon Preview Forthcoming Album With "Black Hole Sun" Cover - American Songwriter
Vince Herman was fed up with just "sitting in my house," he says. So, he bought an RV and took a roadtrip across the country last fall, weaving from Boulder, Colorado to Nashville. "I ended up staying about a month there." And he fell in love with the songwriting community. Currently packing up his Boulder residence, and still awaiting a closing date on a Nashville home, the acclaimed Leftover Salmon guitarist, singer, and songwriter reflects upon what a monumental year 2020 turned out to be.
LEFTOVER SALMON release their grassified version of "Black Hole Sun" today | Grateful
The band's ability to make any song their own is never more evident — the cover features their hyperkinetic musicianship while retaining the emotional impact of the original. Leftover Salmon's Drew Emmitt says, ""Black Hole Sun" has always intrigued me with its haunting lyrics and very cool chord progression. I also felt like it was appropriate for this crazy time we're in."
"Well, we wear flannel shirts, too," Herman quipped to American Songwriter when asked why they covered the song. "That grunge music is all about flannel shirts. And we'd been wearing flannel shirts for years. That song really came out of left field. Soundgarden is outside of our realm. In looking to do a cover on the record, we thought it would surprise people. It's a rock 'n roll bluegrass song, which is kind of what we're all about."
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