Black holes differ in mass and spin

Black holes are spinning faster than expected, researchers find
There's a universe full of black holes out there, spinning merrily away—some fast, others more slowly. A recent survey of supermassive black holes reveals that their spin rates reveal something about their formation history.
Supermassive Black Hole Caught Doing Something Never Seen Before
Sgr A*, at the heart of the Milky Way and clocking in at 4.3 million solar masses, is the closest supermassive black hole we have access to. It's also on the quiescent end of the activity scale, which means we have a front row seat to small-scale black hole behavior that would be too faint to see were it taking place in another galaxy.
Black holes differ in mass and spin: May have formed in different ways
Gravitational wave observations have revolutionized our understanding of black holes, revealing crucial details about their masses and spins. These measurements, collected from binary black hole mergers,
Infrared telescopes discover hundreds of previously undetected supermassive black holes
Using IRAS and NuSTAR telescopes, scientists identify hundreds of obscured black holes hidden behind gas and dust.
Unprecedented View of a Supermassive Black Hole in Action
Active galactic nuclei are supermassive black holes at the center of certain galaxies. As matter falls into these black holes, enormous amounts of energy are released, making active galactic nuclei, o
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Astronomers find hundreds of 'hidden' black holes — and there may be billions or even trillions more
Black holes that have been obscured by clouds of dust still emit infrared light, enabling astronomers to spot them for the ...
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Gravitational waves offer a 'cosmic DNA test' for black holes
The size and spin of black holes can reveal how and where they were born, and gravitational waves offer a way to decode this ...
Webb’s Stunning Discovery: Could These Mysterious “Little Red Dots” Be the Universe’s Earliest Black Holes?
Astronomers compile a large sample of an unusual class of objects in an effort to connect the dots to the early universe.
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James Webb telescope captures 1st 'mid-infrared' flare from Milky Way's supermassive black hole
The James Webb Space Telescope has captured a mid-infrared picture of Sagittarius A*, filling in a long-standing gap in ...
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Feeding supermassive black holes may have ended the cosmic 'dark ages' billions of years ago
"Finding more supermassive black holes that are potentially hosting jets raises the question as to how these black holes grew ...
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Infrared images reveal how black holes affect the space around them
Galactic nuclei images reveal how supermassive black holes interact with their surroundings using infrared telescopes.
A strange black hole is acting even stranger
A strange black hole is making scientists scratch their heads.
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James Webb Space Telescope sees little red dots feeding black holes: 'This is how you solve a universe-breaking problem'
"This is how you solve the universe-breaking problem." ...
Want to Get Sucked Into a Black Hole? Try This Book.
Marcus Chown’s “A Crack in Everything” is a journey through space and time with the people studying one of the most enigmatic objects in the universe.
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This Supermassive Black Hole May Harbor a Bizarre Star That Refuses to Die
Strange x-ray pulses hint at a surprisingly long-lived white dwarf orbiting precariously close to a supermassive black hole ...