supermassive black holes tagged posts

Helical Magnetic Fields: A Universal Mechanism for Jet Collimation?

Results of the Rotation Measure analysis in the HH80-81 jet. The left image shows the streamline image of the component of the magnetic field parallel to the plane of the sky. In the middle panel, the color scale of the RM indicates the direction of the magnetic field along the line of sight, i.e., red, away from the observer, and blue, towards the observer. The right panel shows a scheme depicting the 3D configuration of the magnetic field, exhibiting a helical topology.
Credit: Rodríguez-Kamenetzky et al. 2025, The Astrophysical Journal.

New observations from the National Science Foundation National Radio Astronomy Observatory’s (NSF NRAO) Karl G...

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Sleeping Supermassive Black Holes Awakened briefly by Shredded Stars

An illustration of the formation of CSOs.
This illustration shows how Compact Symmetric Objects, or CSOs, likely form. When a single, massive star wanders too close to a black hole (left), it is devoured. This causes the black hole to shoot out an ultrafast, bipolar jet (center). The jet extends outward and its hot ends glow with radio emissions (right).Credit: B. Saxton/NRAO/AUI/NSF

Radio observations of Compact Symmetric Objects (CSOs) provide new window on black holes. Astronomers have concluded that an obscure class of galaxies known as Compact Symmetric Objects, or CSOs, are not young as previously thought but rather lead relatively short lives.

A new investigation into an obscure class of galaxies known as Compact Symmetric Objects, or CSOs, has revealed that these objects are not entirely what they seem...

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What makes Black Holes Grow and New Stars Form? Machine Learning helps Solve the Mystery

Intergalactic scene
A pair of disc galaxies in the late stages of a merger. Credit: NASA.

It takes more than a galaxy merger to make a black hole grow and new stars form: machine learning shows cold gas is needed too to initiate rapid growth — new research finds.

When they are active, supermassive black holes play a crucial role in the way galaxies evolve. Until now, growth was thought to be triggered by the violent collision of two galaxies followed by their merger, however new research led by the University of Bath suggests galaxy mergers alone are not enough to fuel a black hole — a reservoir of cold gas at the centre the host galaxy is needed too.

The new study, published this week in the journal Monthly Notices of the Royal Astronomical Society is believed to be the first to use machine learnin...

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Astronomers Detect Oldest Black Hole ever observed

The GN-z11 galaxy, taken by the Hubble Space Telescope

Researchers have discovered the oldest black hole ever observed, dating from the dawn of the universe, and found that it is ‘eating’ its host galaxy to death.

The international team, led by the University of Cambridge, used the NASA/ESA/CSA James Webb Space Telescope (JWST) to detect the black hole, which dates from 400 million years after the big bang, more than 13 billion years ago. The results, which lead author Professor Roberto Maiolino says are “a giant leap forward,” are reported in the journal Nature.

That this surprisingly massive black hole — a few million times the mass of our Sun — even exists so early in the universe challenges our assumptions about how black holes form and grow...

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