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Galactic Winds

All articles tagged with #galactic winds

Quasar winds fling energy 300,000 light-years into intergalactic space
space11 days ago

Quasar winds fling energy 300,000 light-years into intergalactic space

A study led by Satoshi Yamada finds winds from an actively feeding supermassive black hole in quasar H1821+643 propel energy far beyond its host galaxy, driving turbulence in hot gas out to about 300,000 light-years and equaling billions of supernova explosions. Using XRISM data on ionized iron, the researchers measured the speed and turbulence of the outflows, showing black holes can influence the surrounding cluster environment far beyond the galaxy itself.

via Space|
#black-holes#energy-outflow#galactic-winds
Cosmic 'missing' matter found drifting between galaxies, hurled there by violent galactic processes
astronomy1 month ago

Cosmic 'missing' matter found drifting between galaxies, hurled there by violent galactic processes

Researchers using CHIME/FRB data and DESI galaxy maps cross-correlated thousands of fast radio bursts with galaxy locations to show a substantial amount of ordinary matter lies outside galaxies in diffuse clouds, likely ejected by energetic events such as black hole jets and supernovae—brightening the picture of where the universe’s missing baryons reside and implying these galactic processes are more powerful than previously thought.

via Live Science|
#astronomy#cosmology#fast-radio-bursts
JWST uncovers galaxy-killing winds in the early universe, explaining why some galaxies died young
science2 months ago

JWST uncovers galaxy-killing winds in the early universe, explaining why some galaxies died young

New JWST observations of the merging galaxy CRISTAL-02 show an enormous, star-formation–driven outflow ejecting gas faster than it forms stars, potentially exhausting the galaxy’s fuel in under 100 million years and explaining why some early massive galaxies stopped forming stars, a mechanism that may be widespread across cosmic history and inform cosmological models.

via Yahoo|
#cristal-02#early-universe#galactic-winds
Powerful winds from early galaxies revealed by Webb
space2 months ago

Powerful winds from early galaxies revealed by Webb

New James Webb Space Telescope observations of the merging galaxy CRISTAL-02, about 1 billion years after the Big Bang, show an enormous gas outflow (~1.5 billion solar masses) and a star-formation rate of ~260 solar masses per year, while gas is being expelled at >500 solar masses per year. The winds, driven by rapid star formation and supernovae (and possibly aided by a black hole), can energize and disperse molecular gas, quenching star formation. If the outflow continues, the galaxy could exhaust its fuel in under 100 million years, offering a window into a widespread mechanism that could explain the abundance of quiescent galaxies in the early universe and inform cosmological simulations—and it hints at similar futures for galaxies like the Milky Way when they collide with Andromeda.

via Live Science|
#cristal-02#early-universe#galactic-winds
"James Webb Space Telescope Reveals Secrets of Starburst Galaxies"
astronomy2 years ago

"James Webb Space Telescope Reveals Secrets of Starburst Galaxies"

The James Webb Space Telescope has captured detailed images of the Cigar Galaxy, revealing a turbulent environment at its core where stars are forming at a rapid pace. The telescope's infrared view allowed scientists to see through the shroud of gas and dust surrounding the star-forming region, uncovering galactic winds and structures that influence star birth. The team's research, soon to be published in The Astrophysical Journal, aims to provide insights into the processes shaping starburst galaxies and their impact on galactic evolution.

via Space.com|
#astronomy#cigar-galaxy#galactic-winds
Unraveling the Enigma of Universe's Rare Radio Circles
astronomy2 years ago

Unraveling the Enigma of Universe's Rare Radio Circles

Astronomers have unraveled the mystery behind the rare radio wave circles (ORCs) discovered in 2019, attributing them to outflowing galactic winds from starburst galaxies, shedding light on galactic evolution and phenomena. These enormous circles, reaching hundreds of thousands of light years across, are believed to be formed by the intense burst of star formation in starburst galaxies, leading to ultra-fast outflowing winds that create the observed radio rings. The findings provide new insights into the nature of these peculiar astronomical phenomena and their role in understanding galactic evolution.

via SciTechDaily|
#astronomical-phenomena#astronomy#galactic-winds
"Unraveling the Enigma of Cosmic Ghost Circles in Deep Space"
astronomy2 years ago

"Unraveling the Enigma of Cosmic Ghost Circles in Deep Space"

Scientists may have solved the mystery of cosmic ORCs, vast odd radio circles that can encompass entire galaxies, by pointing to powerful winds erupting from bursts of exploding stars as the cause. These winds, driven by simultaneous supernova explosions in starburst galaxies, create shockwaves that generate the ORCs, which can spread out for hundreds of thousands of light-years. This discovery could provide insights into galactic evolution and the prevalence of extreme outflowing galactic winds.

via Space.com|
#astronomy#galactic-winds#odd-radio-circles
"Unraveling the Mystery of Enormous Cosmic Smoke Rings in Space"
astronomy2 years ago

"Unraveling the Mystery of Enormous Cosmic Smoke Rings in Space"

Astronomers have identified the origin of enormous "odd radio circles" (ORCs) as outflowing galactic winds from exploding stars in starburst galaxies, which occur when two large galaxies collide, pushing gas into a small region and causing intense bursts of star formation. These ORCs, measuring about a million light-years across, were initially thought to be imaging artifacts but have been confirmed as a new class of astronomical object only visible in the radio spectrum. Computer simulations and spectrograph data support the theory that ORCs are formed by powerful outflowing galactic winds, providing a rare opportunity to study galactic winds through radio data and spectrometry.

via Ars Technica|
#astronomical-discoveries#astronomy#galactic-winds
"Unraveling the Mystery of Odd Radio Circles in Space"
astronomy2 years ago

"Unraveling the Mystery of Odd Radio Circles in Space"

Astronomers have finally found a possible explanation for the mysterious odd radio circles (ORCs) in deep space, which were discovered in 2019. These ghostly circles are believed to be shockwaves created by powerful galactic winds emanating from starburst galaxies, where intense star formation occurs due to galactic mergers. Computer simulations suggest that these galactic outflows, driven by high rates of supernova explosions, could produce the observed ORCs. This discovery raises questions about the duration and prevalence of ORCs and their relationship to starbursting galaxies, offering potential insights into the evolution of the Universe.

via ScienceAlert|
#astronomy#astrophysics#galactic-winds
"Unraveling the Mystery of Odd Radio Circles in Space"
astronomy2 years ago

"Unraveling the Mystery of Odd Radio Circles in Space"

Astronomers have proposed a new theory suggesting that odd radio circles (ORCs) in space, massive celestial structures with galaxies at their centers, are formed by powerful galactic winds resulting from the explosions of massive stars. The theory is based on observations of ORC 4 using the W.M. Keck Observatory, which revealed the presence of heated gas in visible light. These findings shed light on the origins of ORCs and their potential impact on shaping galaxies over time, providing insights into galactic evolution.

via CNN|
#astronomers#astronomy#galactic-evolution
Unraveling the Enigma of Odd Radio Circles in the Universe
astronomy2 years ago

Unraveling the Enigma of Odd Radio Circles in the Universe

Astronomers at the University of California San Diego have discovered that odd radio circles (ORCs) in space are formed by outflowing winds from explosive events like supernovae, creating massive radio wave circles more than 50,000 times the diameter of the Milky Way. Using the ASKAP telescope, they observed that these ORCs are created by intense bursts of star formation and outflowing galactic winds, shedding light on the evolution of galaxies and the life cycle of these winds.

via Daily Mail|
#askap-telescope#astronomy#galactic-winds
"Unraveling the Mystery of Giant Odd Radio Circles in Space"
astronomy2 years ago

"Unraveling the Mystery of Giant Odd Radio Circles in Space"

Researchers have discovered an extended ionized gas structure spanning over 40 kiloparsecs in the host galaxy of an odd radio circle, providing insights into the nature of these enigmatic radio sources. The findings shed light on the role of galactic winds and active galactic nuclei in shaping the ionized gas environment of galaxies, contributing to our understanding of galaxy evolution and the mechanisms driving radio emissions.

via Nature.com|
#astronomy#galactic-winds#galaxy-evolution
"Discovery of Massive Interstellar Winds Shaking the Distant Cosmos"
astronomy2 years ago

"Discovery of Massive Interstellar Winds Shaking the Distant Cosmos"

Scientists have made the first direct observations of galactic winds in a large population of galaxies in the distant Universe, shedding light on the early stages of galaxy formation. Galactic winds, produced by supernovae, play a crucial role in regulating star formation and shaping the evolution of galaxies. These winds inject energy and momentum into the gas, causing it to be expelled from the galaxy. The study used the MUSE instrument on the Very Large Telescope to detect and observe the emission from magnesium atoms in over 100 galaxies, revealing the average shape of these winds to be like an ice cream cone. Further research is needed to understand the physical properties and variations of galactic winds.

via Ars Technica|
#astronomy#feedback-process#galactic-winds