Adsorption disk

Artist's impression of material spiraling inward, pulled by the strong gravity of a central supermassive black hole, forming an "accretion disk." Credit: Dimitrios Sakkas (tomakti), Antonis Georgakakis, Angel Ruiz, Maria Chira (NOA)

New observations: The relationship between UV and X-ray radiation in quasars has changed over cosmic time

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International research finds that the long-standing correlation between UV and X-ray emissions from quasars is not constant throughout the history of the universe – a hint that the structure of the accretion disk and “corona” around supermassive black holes is not universal
The binary system, one of whose members is the black hole Cygnus X-1. From Wikipedia

Balloon-launched telescope observations reveal how material falls into the black hole in Cygnus X-1

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A team of researchers used the balloon-borne XL-Calibur telescope to measure polarized X-rays from the black hole Cygnus X-1 in unprecedented detail, revealing new clues about how hot material twists and turns.
A star that survived beyond a black hole. Rewrite a commentary on flashes of light from galaxies

For the first time, a star has been recorded surviving a devastating encounter with a black hole

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New research suggests that the flickering light emissions from the centers of galaxies do not always stem from star-devouring black holes – but sometimes from internal disk changes.
Ammonia gas falls into an adsorption disk and feeds HW2 in Capouse A. Credit: NSF/AUI/NSF NRAO/B. Saxton

Astronomers Document "Cosmic Feast": Massive Star Devours Gas at Record Speed

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New observations using the VLA radio array reveal how a protostar called HW2 Bacpheus A is absorbing ammonia gas from a rotating disk at a rare rate – providing a rare glimpse into the process of massive star formation.
A black hole with an accretion disk and energy emissions in deep space.

The secret energy inside every black hole is more powerful than we thought

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Researchers have discovered that black holes can pump and release huge amounts of energy through magnetic fields and magnetized accretion disks, which could change our understanding of galaxy formation and the evolution of the universe.
The black hole's accretion disk. Illustration: depositphotos.com

How a black hole grows

Researchers have developed a method for mapping the central regions around black holes, which contributes to a better understanding of their growth
The orbits of the main bodies in the solar system. Courtesy of CALTECH

A new solution to an old mystery: Why isn't the interior of our solar system spinning faster?

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The key to solving a long-standing mystery about thin disks of gas orbiting young stars: the movement of a small number of charged particles. This is claimed in a new Caltech study
An illustration of the solar system in its early stages, with omoamua-like objects. Illustration courtesy of NASA/ESO/Danor Aharon

The seeds of the planets came from other solar systems

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A simulation of a supermassive black hole with an accretion disk around it. Image: NASA/JPL-Caltech.

A method that significantly improves the measurement of the mass of black holes in the centers of galaxies

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