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Supermassive Black Holes

All articles tagged with #supermassive black holes

Euclid Discovers 31 Ancient Quasars, Revealing Fast-Growing Black Holes in the Early Cosmos
space2 hours ago

Euclid Discovers 31 Ancient Quasars, Revealing Fast-Growing Black Holes in the Early Cosmos

ESA’s Euclid space telescope found 31 ancient quasars dating to redshift 6.6–7.8, including two record-holders at z=7.77 and z=7.69, making them the oldest seen. Each hosts a billion-solar-mass black hole, existing when the universe was under a billion years old. The haul doubles the known number of such quasars and demonstrates Euclid’s unexpected capability to census the early cosmos, though how these enormous black holes formed so quickly remains a major puzzle. This is just the first major result from a six-year survey that could uncover many more distant quasars.

via Space Daily|
#early-universe#euclid-telescope#quasars
Planets Could Form in Turbulent Edges of Active Galactic Nuclei
space27 days ago

Planets Could Form in Turbulent Edges of Active Galactic Nuclei

New simulations suggest the outer edges of gas-rich accretion disks around active supermassive black holes could resemble planet-forming disks, allowing dust to clump via streaming instability and form millions of Jupiter-mass planets tens of parsecs (a few tens of light-years) from the black hole; these planets would likely migrate outward, and gravitational lensing could help detect them, though observations are still in early stages.

via Space|
#accretion-disks#active-galactic-nuclei#exoplanets
X-Ray Little Red Dot Hints at a Bridge in Early Black Hole Growth
science2 months ago

X-Ray Little Red Dot Hints at a Bridge in Early Black Hole Growth

Astronomers using JWST and Chandra found an unusual X-ray-bright “little red dot” (3DHST-AEGIS-12014) about 11.8 billion light-years away, suggesting it may be a transitional object linking black hole stars to the growth of early supermassive black holes. Its X-ray emission could escape through holes in surrounding gas clouds, explaining variability and offering a potential link between LRDs and SMBHs in the young universe, though further observations are needed to confirm the scenario and its implications for black hole formation.

via Universe Today|
#early-universe#jwst#little-red-dots
Twin supermassive black holes in Markarian 501 head toward a century-scale collision
science2 months ago

Twin supermassive black holes in Markarian 501 head toward a century-scale collision

Astronomers have spotted two supermassive black holes at the center of the distant galaxy Markarian 501, each powering its own jet and orbiting roughly every 121 days with a separation of about 250–540 AU. The system’s light-bending Einstein ring supports the binary interpretation. If they merge, the resulting gravitational waves would dwarf those from stellar-mass mergers, leaving a single remnant black hole; the collision could occur in as little as 100 years.

via BBC Science Focus Magazine|
#astronomy#black-holes#gravitational-waves
Unprecedented Low-Frequency Radio Sky Map Reveals 13.7 Million Cosmic Sources
science4 months ago

Unprecedented Low-Frequency Radio Sky Map Reveals 13.7 Million Cosmic Sources

Astronomers released LoTSS-DR3, the most detailed low-frequency radio sky map from the LOFAR network, cataloging 13.7 million cosmic sources and offering new insights into supermassive black holes, their jets, and galaxy clusters, while tackling ionospheric distortions with advanced data-processing techniques on ~18.6 petabytes of data.

via The Daily Galaxy|
#galaxy-clusters#lofar#lotss-dr3
Dark stars could tie JWST’s three cosmic puzzles together
space5 months ago

Dark stars could tie JWST’s three cosmic puzzles together

Dark stars—hypothetical early-universe objects powered by annihilating dark matter—could explain three JWST-era mysteries: the overabundance of supermassive black holes in the first billion years, the existence of ultrabright blue ‘monster’ galaxies, and the compact ‘little red dots’. If dark stars exhausted their dark matter and collapsed, they could seed rapid SMBH formation, aligning with JWST observations. The idea remains speculative but is supported by emerging hints, with a December 2025 paper proposing it as a single mechanism to address multiple puzzles.

via Space|
#dark-matter#dark-stars#early-universe
2025 Black Hole Breakthroughs
science6 months ago

2025 Black Hole Breakthroughs

2025 was a groundbreaking year for black hole research, featuring discoveries such as a rapidly feeding black hole in the early universe, a runaway supermassive black hole moving at incredible speeds, space tornadoes around the Milky Way's core, energetic flares from our galaxy's black hole, and the detection of the universe's most distant and possibly most massive black holes, all facilitated by advanced telescopes like JWST and ALMA.

via Space|
#2025-breakthroughs#black-holes#cosmic-discoveries
Revealing the Mysteries of Extreme Black Hole Systems and Jets
science11 months ago

Revealing the Mysteries of Extreme Black Hole Systems and Jets

The article discusses the extreme black hole system OJ 287, which is the most massive known binary supermassive black hole system, located about 4 billion light-years away. It highlights how such systems emit gravitational waves, which are challenging to detect due to their long wavelengths, requiring advanced space-based detectors like LISA or pulsar timing arrays. The system's dynamics, including periodic flares caused by the smaller black hole crossing the larger one's accretion disk, are consistent with Einstein's general relativity. In about 10,000 years, these black holes are expected to merge, releasing an enormous amount of gravitational wave energy.

via Big Think|
#black-holes#galaxy-mergers#gravitational-waves