Tag

Quasar

All articles tagged with #quasar

space14 days ago•5 min saved

Distant Black Hole Fades in a Human-Scale Timespan

Astronomers tracked galaxy J0218−0036 (about 10 billion light-years away) and found its central supermassive black hole dimmed by about 20x overall and ~50x in the active nucleus from the early 2000s to 2023. Dust obscuration was ruled out, pointing to an intrinsic drop in accretion with the Eddington ratio falling from ~0.4 to ~0.008. The observed e-folding timescale is roughly 2,000 days in the observed frame (~700 days rest frame), far faster than standard models predict, suggesting a change in accretion mode and challenging current black hole growth theories.

via Indian Defence Review|

#accretion #black-hole #galaxy

science1 month ago•20 min saved

Cosmic water reservoir: distant quasar harbors trillions of oceans

Astronomers report that the quasar APM 08279+5255, about 12 billion light-years away, contains roughly 140 trillion times the amount of water in Earth’s oceans, making it the largest known reservoir of water in the cosmos. Water was detected through multiple emission lines, aided by gravitational lensing that magnifies the source. The finding shows water is pervasive even in the early universe and helps illuminate how black holes grow and galaxies form, with lensing suggesting there may be more such water-rich systems hiding in existing catalogs.

via Earth.com|

#astronomy #gravitational-lensing #quasar

space1 month ago•71 min saved

Ancient quasar defies growth rules by 13× the cosmic limit

Astronomers studying the distant quasar ID830 find a supermassive black hole actively accreting at about 13 times the Eddington limit, powering gigantic radio jets and a bright X-ray corona. The extreme, short-lived super-Eddington phase challenges standard black hole growth models and supports the idea that early-universe SMBHs grew rapidly, shaping their host galaxies through intense outflows and radiation.

via Live Science|

#black-holes #early-universe #eddington-limit

science3 months ago•6 min saved

Black Hole Holds Water Enough to Fill Trillions of Oceans

Astronomers have discovered the largest and most distant water reservoir in the cosmos within a quasar called APM 08279+5255, containing enough water to fill trillions of Earth oceans, and its brightness is likely amplified by gravitational lensing, providing insights into galaxy and black hole growth in the early universe.

via Earth.com|

#black-hole #early-universe #gravitational-lensing

science5 months ago•3 min saved

NASA Discovers Universe's Largest Water Reservoir with Trillions of Times Earth's Water

NASA has detected the largest and most distant water reservoir ever found in the universe, located around a quasar 12 billion light-years away, containing 140 trillion times the water on Earth, providing insights into the early universe and the widespread presence of water.

via Evidence Network|

#black-hole #cosmic-discovery #early-universe

science5 months ago•6 min saved

Supermassive Black Hole Holds Trillions of Oceans of Water

Astronomers have discovered the largest and most distant water reservoir in the cosmos within a quasar over 12 billion light-years away, containing enough water to fill trillions of Earth oceans, with the observation potentially amplified by gravitational lensing, providing insights into galaxy and black hole growth in the early universe.

via Earth.com|

#black-hole #early-universe #gravitational-lensing

science6 months ago•4 min saved

Outflow Causes Significant Mass Reduction in Brightest Quasar

A new study using the GRAVITY+ instrument on the VLT has revised the mass of the brightest known quasar, J0529, from 10 billion to 800 million solar masses by accounting for gas outflows that skewed previous measurements, providing new insights into black hole growth and galaxy formation in the early universe.

via ScienceAlert|

#black-hole #gravity #mass-estimation

science6 months ago•5 min saved

Black Hole Growth Surpasses Scientific Limits, Defying Physics

Astronomers using NASA's Chandra X-ray Observatory have discovered a distant quasar with a black hole growing faster than the Eddington limit, shedding light on how supermassive black holes formed early in the universe. The black hole, about a billion times the Sun's mass, is accreting material at a rate 2.4 times the typical maximum, which may explain the rapid emergence of massive black holes shortly after the Big Bang.

via SciTechDaily|

#black-hole #chandra-x-ray-observatory #cosmic-growth

science6 months ago•2 min saved

Scientists Reveal Smaller Sizes for Supermassive Black Holes

A study of a distant galaxy suggests supermassive black holes may be smaller than previously thought, challenging existing models of cosmic growth. The black hole at the core of a galaxy over 12 billion light years away is estimated to be about one billion suns, much less than earlier assumptions, due to intense radiation blowing gas away and limiting its growth.

via Al Jazeera|

#astronomy #black-holes #cosmic-growth

science6 months ago•4 min saved

Black Hole Surpasses Growth Limits at Record Rate

Astronomers have discovered a distant quasar, RACS J0320-35, that is growing at 2.4 times the Eddington limit, consuming the equivalent of 3,000 suns annually, challenging existing theories of black hole growth and potentially reshaping our understanding of the early universe.

via Rude Baguette|

#black-hole #cosmic-evolution #early-universe

science6 months ago•5 min saved

NASA's Chandra Detects Rapidly Growing Black Hole

NASA's Chandra X-ray Observatory has discovered a black hole, about a billion times the Sun's mass, growing at an unprecedented rate in the early universe, which may shed light on how supermassive black holes form quickly after the Big Bang.

via NASA (.gov)|

#black-hole #chandra-x-ray-observatory #cosmology

science7 months ago•3 min saved

Double-zoom in warped spacetime uncovers radiation near supermassive black hole

Astronomers using gravitational lensing effects discovered radiation from a quasar's core, revealing a hot, magnetic corona around a supermassive black hole in a distant galaxy, with potential for further insights into black hole environments.

via Space|

#black-hole #gravitational-lensing #millimeter-radiation

science7 months ago•2 min saved

Double Zoom Unveils Millimeter Waves Near Black Hole

An international team of astronomers discovered that millimeter radiation is generated close to the core of a supermassive black hole by using accidental double zoom via microlensing and macrolensing, revealing new insights into the conditions near black holes.

via Phys.org|

#astronomy #black-hole #microlensing

science10 months ago•3 min saved

Astronomers Discover Ultra-Powerful Black Hole Jets Illuminating the Early Universe

Astronomers have discovered extremely powerful X-ray jets from two ancient supermassive black holes, shining in the afterglow of the Big Bang, each spanning 300,000 light-years and emitting energy equivalent to 10 trillion suns, providing insights into early galaxy formation and black hole activity.

via Space|

#black-hole #cosmic-microwave-background #early-universe

science10 months ago•4 min saved

Massive Black Hole Jets Reveal Early Universe's Cosmic Power

Astronomers captured an image of a supermassive black hole's jet from 11.6 billion light-years away, illuminated by the Big Bang's afterglow, revealing the jet's immense size and speed. The observation was made possible by NASA's Chandra X-ray Observatory, which faces potential decommissioning due to funding issues, risking a significant loss in high-energy astrophysics research.

via Live Science|

#black-hole #early-universe #nasa-chandra