VLT tagged posts

Black hole feeding frenzy ends in lingering cosmic indigestion

Black hole feeding frenzy ends in cosmic indigestion
Artist impression of SwiftJ1727 with donor jet clouds. Credit: John A. Paice & Noel Castro Segura et al, ‘SwiftJ1727—Final—No Overlay—DonorJetClouds’, (2026).

Black holes are often portrayed as cosmic gluttons that swallow everything that comes too close. But new observations of a dramatic black hole outburst—led by Warwick Postdoctoral Fellow Dr. Noel Castro Segura—suggest the reality is much messier.

Using the European Southern Observatory’s Very Large Telescope (VLT), astronomers followed the newly discovered black hole system Swift J1727.8−1613 through a spectacular 2023 eruption. The work is published in the journal Monthly Notices of the Royal Astronomical Society.

Astronomers found that as the black hole consumed gas from a nearby star, it simultaneously launch...

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Strange winds on seven hot Jupiters reveal strongest signs yet of exoplanet magnetic activity

A team of astronomers has found the strongest evidence yet that some planets outside our solar system may be magnetic. Using the European Southern Observatory’s Very Large Telescope (ESO’s VLT) and the GeminiNorth telescope, the researchers measured wind speeds on seven very hot, Jupiter-like exoplanets.

The observations reveal that the winds on these planets are most likely governed by magnetic fields, providing the first robust measurement of magnetism on planets outside the solar system.

“This breakthrough opens a completely new window on exoplanet research...

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Stardust study resets how life’s atoms spread through space

A yellow star with a surrounding dust cloud
Dust clouds reflect starlight around the star R Doradus. This image combines polarised visible light taken with the Very Large Telescope in Chile, and an image of the star’s surface taken with Alma. Credit: ESO/T. Schirmer/T. Khouri; ALMA (ESO/NAOJ/NRAO)

Starlight and stardust are not enough to drive the powerful winds of giant stars, transporting the building blocks of life through our galaxy. That’s the conclusion of a new study from Chalmers University of Technology, Sweden, of red giant star R Doradus. The result overturns a long-held idea about how the atoms needed for life are spread.

The study, “An empirical view of the extended atmosphere and inner envelope of the asymptotic giant branch star R Doradus II...

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Rare exoplanet orbits twin stars in ‘Star Wars’-like twist

Astronomers find rare twist in exoplanet's twin star orbit
A hypothetical office overlooking the Paranal Observatory in Chile, with the European Southern Observatory’s VLT visible with its laser on the hill, and the four small SPECULOOS telescopes nearer the foreground. In the sky is a depiction of the orbital configuration of the 2M1510 system with the two brown dwarf stars in red orbiting one another, and the inferred exoplanet on a polar orbit in white. Within the office, a poster celebrating the original discovery of 2M1510’s two brown dwarfs is on the wall, while diagrams and patterns showing the apsidal precession of the brown dwarf’s orbit caused by the planets are shown on the table the roof and the floor. Credit: University of Birmingham / Amanda Smith

Astronomers have discovered a planet that orbits at a 90-degree angle around a rare...

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