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Intergalactic Medium

All articles tagged with #intergalactic medium

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
New Gas Bridge Between Galaxies Reveals Cosmic Matter Cycle
science11 months ago

New Gas Bridge Between Galaxies Reveals Cosmic Matter Cycle

A new discovery from the WALLABY survey using the ASKAP telescope revealed a 160,000-light-year-long gas bridge between two dwarf galaxies, formed by tidal interactions, and a massive gas tail caused by ram pressure as the galaxies move through the Virgo cluster's hot gas, providing insights into the cosmic cycle of matter between galaxies and intergalactic space.

via The Conversation|
#galaxies#gas-bridge#hydrogen
Enhanced Measurement of Cosmic Structures and Intergalactic Medium
science1 year ago

Enhanced Measurement of Cosmic Structures and Intergalactic Medium

A team of European scientists has improved the quantification of the warm-hot intergalactic medium (WHIM) and cosmic filaments using data from the eROSITA X-ray instrument. These cosmic filaments, which are vast structures of hot, diffuse gas, contain about 50% of the universe's baryonic mass. The study, published in Astronomy & Astrophysics, involved analyzing X-ray emissions from nearly 8,000 filaments to determine their temperature and baryon density contrast. The findings align with numerical simulations and are expected to enhance understanding of the WHIM as future X-ray missions explore its properties further.

via Phys.org|
#baryon-density#cosmic-filaments#erosita
First Intergalactic Bubble Discovered by Astrophysicists
astronomy3 years ago

First Intergalactic Bubble Discovered by Astrophysicists

Astrophysicists have discovered the earliest indications of certain portions of the universe that were heated to temperatures similar to that of the intergalactic gas medium, where the majority of atoms in the universe currently reside. The team identified the furthest patch of the universe heated up to temperatures more characteristic of today’s Warm-Hot Intergalactic Medium (WHIM) at a time when the universe was only 3 billion years old. This region is a giant aggregation of galaxies known as ‘COSTCO-I’, a galaxy protocluster with a total mass of over 400 trillion times the mass of the Sun, and spanning several million light-years across.

via SciTechDaily|
#astronomy#astrophysics#galaxy-protocluster