Category Astronomy/Space

Black Holes Help with Star Birth

Virtual milky way: Gas density around a massive central galaxy in a group in the virtual universe of the TNG50 simulation. Gas inside the galaxy corresponds to the bright vertical structure: a gaseous disk. To the left and right of that structure… [more]
© TNG Collaboration/Dylan Nelson

The cosmic mass monsters clear the way for the formation of new suns in satellite galaxies. Research combining systematic observations with cosmological simulations has found that, surprisingly, black holes can help certain galaxies form new stars. On scales of galaxies, the role of supermassive black holes for star formation had previously been seen as destructive — active black holes can strip galaxies of the gas that galaxies need to form new stars...

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Citizen scientists discover 2 Gaseous Planets around a Bright, Sun-like Star

In this artist’s rendering, two gaseous planets orbit the bright star HD 152843. These planets were discovered through the citizen science project Planet Hunters TESS, in collaboration with professional scientists.
Credits: NASA/Scott Wiessinger

At night, seven-year-old Miguel likes talking to his father Cesar Rubio about planets and stars. “I try to nurture that,” says Rubio, a machinist in Pomona, California, who makes parts for mining and power generation equipment.

Now, the boy’s father can claim he helped discover planets, too. He is one of thousands of volunteers participating in Planet Hunters TESS, a NASA-funded citizen science project that looks for evidence of planets beyond our solar system, or exoplanets...

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ALMA discovers Earliest Gigantic Black Hole Storm

figure: Artist’s impression of a galactic wind driven by a supermassive black hole located in the center of a galaxy
Artist’s impression of a galactic wind driven by a supermassive black hole located in the center of a galaxy. The intense energy emanating from the black hole creates a galaxy-scale flow of gas that blows away the interstellar matter that is the material for forming stars. Credit: ALMA (ESO/NAOJ/NRAO)

Researchers using the Atacama Large Millimeter/submillimeter Array (ALMA) discovered a titanic galactic wind driven by a supermassive black hole 13.1 billion years ago. This is the earliest example yet observed of such a wind to date and is a telltale sign that huge black holes have a profound effect on the growth of galaxies from the very early history of the universe.

At the center of many large galaxies hides a supermassive black hole that is millions to billions of times more mas...

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Astronomers discover a ‘Changing-look’ Blazar

Sloan Digital Sky Survey archival image from March 2004 (top) and the image from the authors' observation campaign of the blazar, B2 1420+32, taken in January 2020 using ASAS-SN (bottom). The blazar brightness increased by a factor of 100.
Sloan Digital Sky Survey archival image from March 2004 (left) and the image from the authors’ observation campaign of the blazar, B2 1420+32, taken in January 2020 using ASAS-SN (right). The blazar brightness increased by a factor of 100.

Astronomers describe a ‘changing-look’ blazar — a powerful active galactic nucleus powered by supermassive blackhole at the center of a galaxy. A University of Oklahoma doctoral student, graduate and undergraduate research assistants, and an associate professor in the Homer L. Dodge Department of Physics and Astronomy in the University of Oklahoma College of Arts and Sciences are lead authors on a paper describing a “changing-look” blazar – a powerful active galactic nucleus powered by supermassive blackhole at the center of a galaxy...

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