Tag

Galaxy Merger

All articles tagged with #galaxy merger

space11 hours ago•15 min saved

Hidden Clues in the Milky Way: Remnant of a Small Galaxy Unearthed

Astronomers have identified a group of 20 ancient, very metal-poor stars in the Milky Way's disk with mixed prograde and retrograde orbits and nearly identical chemistry, suggesting they are remnants from a long-ago dwarf galaxy dubbed Loki, potentially swallowed about 10 billion years ago; while not definitive, the finding supports the view that the Milky Way grew through mergers, a conclusion increasingly supported by Gaia data and galactic archaeology.

via Space Daily|

#gaia-mission #galaxy-merger #loki

space1 month ago•72 min saved

Cosmic Tug-of-War: Antennae Galaxies Dazzle in Merging Dance

Astrophotographer Greg Meyer captured a near-21-hour deep-space image of the Antennae Galaxies (NGC 4038/NGC 4039) in Corvus as they violently merge into a single elliptical galaxy, revealing orange-yellow cores, tangled dust, and sweeping tidal tails that fuel bursts of star formation; shot with a Sky-Watcher Esprit 120 at Starfront Observatory in Texas, the photo highlights the dramatic gravitational tug-of-war and the likely dispersion of most newly formed star clusters over time.

via Space|

#antennae-galaxies #astrophotography #galaxy-merger

science2 months ago•7 min saved

Gigamaser Beacon Detected From 8 Billion Light-Years Away by MeerKAT

Astronomers using the MeerKAT radio telescope detected a bright, narrow 18-centimeter hydroxyl emission line from the distant galaxy system HATLAS J142935.3-002836 at z=1.027 (about 8 billion light-years away). The signal is amplified by a foreground galaxy’s gravitational lensing and the background merger’s dense, energized gas, pushing it toward megamaser/gigamaser levels. The rapid detection in a few hours demonstrates MeerKAT’s capability to find distant hydroxyl emitters in wide surveys.

via The Daily Galaxy|

#galaxy-merger #gravitational-lensing #hatlas-j1429353-002836

space2 months ago•68 min saved

Cosmic laser beacon: brightest megamaser seen from 8 billion light-years away via gravitational lensing

Astronomers using the MeerKAT radio telescope have detected the brightest and most distant hydroxyl megamaser from a galaxy merger about 8 billion light-years away. The signal, amplified by gravitational lensing, may qualify as a gigamaser and provides a rare beacon to study how ancient galaxies form and evolve; scientists hope to find many more such megamasers to map the cosmos’s history.

via Live Science|

#galaxy-merger #gravitational-lensing #hydroxyl

space-and-spaceflight3 months ago•16 min saved

Gigamaser: The Universe’s Brightest Microwave Laser Detected in Deep Space

Astronomers using the MeerKAT radio telescope spotted an extremely bright hydroxyl maser in the distant galaxy merger H-ATLAS J142935.3–002836, whose signal was amplified by an unrelated foreground galaxy acting as a gravitational lens, yielding the first gigamaser—about 100,000 times the luminosity of a star—and enabling new ways to probe cosmic evolution from billions of light-years away.

via Gizmodo|

#galaxy-merger #gigamaser #gravitational-lensing

space3 months ago•6 min saved

Webb Telescope Captures a Cosmic Question Mark in a Distant Galaxy

JWST captured a distant galaxy that looks like a giant question mark, created by two merging galaxies and magnified by gravitational lensing; the image offers a window into galaxy formation and cosmic evolution, showcasing the power of Webb's infrared observations.

via The Daily Galaxy|

#astronomy #galaxy-merger #gravitational-lensing

science4 months ago•2 min saved

Scientists Discover Rare Triple Black Hole System in Galaxy Merger

Astronomers have discovered a rare cosmic event involving three galaxies in the process of merging, each hosting an actively feeding supermassive black hole emitting radio jets, providing new insights into galaxy and black hole growth.

via ScienceAlert|

#black-holes #cosmic-event #galaxy-merger

science4 months ago•4 min saved

Scientists Discover First Active Triple Black Hole System in Galaxy Merger

Astronomers have confirmed the first known system where three galaxies, each hosting active supermassive black holes, are merging, providing new insights into galaxy and black hole evolution through high-resolution radio imaging. The system, located 1.2 billion light-years away, shows all three black holes actively feeding and launching jets, a rare and significant discovery that advances our understanding of cosmic growth processes.

via Indian Defence Review|

#agn #black-holes #cosmic-collision

science5 months ago•1 min saved

NASA's Stunning Images of Colliding Galaxies and Cosmic Webs

The James Webb Space Telescope captured a detailed image of the merging spiral galaxies NGC 2207 and IC 2163, revealing an intricate web of cosmic chaos, complemented by Chandra's X-ray data highlighting high-energy regions, providing insights into galaxy interactions.

via Live Science|

#galaxy-merger #ic-2163 #james-webb-telescope

science5 months ago•2 min saved

James Webb Telescope Detects First Runaway Supermassive Black Hole Speeding Through Galaxy

Astronomers using the Webb space telescope have observed the first known runaway supermassive black hole, which is traveling at 2.2 million mph and leaving a trail of gas that is forming new stars over 200,000 light-years long, likely ejected from its galaxy due to a galaxy merger or binary black hole interaction.

via Gizmodo|

#black-hole #galaxy-merger #runaway-black-hole

science5 months ago•4 min saved

James Webb Telescope Confirms First Runaway Supermassive Black Hole Speeding Through Space

Astronomers using JWST have confirmed the existence of RBH-1, a supermassive black hole at least 10 million times the Sun's mass, ejected from its galaxy at 954 km/s likely due to a merger and gravitational recoil, providing empirical evidence for long-predicted black hole ejection mechanisms.

via ScienceAlert|

#galaxy-merger #gravitational-recoil #jwst

science8 months ago•5 min saved

James Webb Telescope Spots Rare 5-Galaxy Collision in Early Universe

Astronomers using JWST and Hubble have discovered an exceptionally rare system of at least five galaxies merging just 800 million years after the Big Bang, providing new insights into galaxy formation and evolution in the early universe.

via Live Science|

#cosmic-evolution #early-universe #galaxy-merger

science9 months ago•3 min saved

Cosmic Bridges Unveil Galactic Mergers and Stellar Tugs

Astronomers captured the first optical evidence of a stellar bridge being torn between two massive galaxies in the Abell 3667 galaxy cluster, revealing a violent cosmic merger and providing insights into dark matter distribution, with future observations expected from the Vera C. Rubin Observatory.

via The Daily Galaxy|

#abell-3667 #cosmic-collision #dark-matter

science10 months ago•4 min saved

Scientists Observe the Birth of a Cosmic Monster After 8.3 Billion Years

Astronomers using the James Webb Space Telescope observed the formation of a supermassive black hole between two merging galaxies, supporting the hypothesis that such black holes can form directly from collapsing gas clouds during galaxy collisions, providing new insights into their origins.

via Yahoo Home|

#black-hole-formation #cosmic-evolution #galaxy-merger

science10 months ago•4 min saved

Scientists Observe 8.3 Billion-Year-Old Cosmic Event

Scientists observed the formation of a supermassive black hole in a galaxy merger 8.3 billion years ago, supporting the hypothesis that such black holes can form directly from collapsing gas clouds, providing new insights into their origins.

via Yahoo Home|

#black-hole-origins #cosmic-formation #galaxy-merger