Tag

Galactic Wind

All articles tagged with #galactic wind

science2 months ago•3 min saved

Webb Spots Galaxy-Quenching Wind in Distant Merger

Using the James Webb Space Telescope, scientists observe the distant galaxy merger CRISTAL-02 and find a powerful outflow of gas—a galactic wind—that's removing fuel faster than stars can form, potentially quenching future star formation; the wind is likely driven by merger-triggered starbursts and supernovae (with a possible role for a central black hole), offering insight into early galaxy growth and illustrating a space-weather-like phenomenon in the cosmos.

via USA Today|

#galactic-wind #galaxy-merger #james-webb-space-telescope

science2 months ago•39 min saved

JWST uncovers a fierce galactic wind that may curb star formation in early galaxies

The James Webb Space Telescope observed a powerful wind expelling gas from a distant early galaxy, which could suppress star formation and help explain why some early galaxies shone briefly before fading, shedding light on how galaxies evolve in the universe’s infancy.

via Yahoo|

#early-galaxies #galactic-wind #galaxy-evolution

space4 months ago•5 min saved

Astronomers Directly Measure M82's Extreme Galactic Wind

Scientists using the XRISM X-ray telescope directly measured the hot wind from the starburst galaxy M82, finding speeds over 3 million km/h and temperatures near 25 million °C. The hot wind can drive about four solar masses of gas per year outward, contributing to a 40,000‑light‑year plume, while a total of seven solar masses per year are moving outward—with about three solar masses unaccounted for—raising questions about where that gas goes and how galactic winds affect galaxy evolution. Cosmic rays may contribute but aren’t the primary engine according to current data.

via Indian Defence Review|

#astronomy #galactic-wind #m82

space5 months ago•6 min saved

XRISM Confirms Fast Hot Wind Driving M82’s Outflow

For the first time, XRISM’s Resolve instrument directly measured the velocity of hot gas at the center of the starburst galaxy M82, finding speeds around 2 million mph (≈3 million km/h). The hot wind’s pressure from high temperatures appears capable of powering the cooler, galaxy-wide outflow, a result that challenges and refines models of starburst galaxies and the role of cosmic rays in driving galactic winds.

via NASA Science (.gov)|

#galactic-wind #m82 #space

astronomy3 years ago•5 min saved

Chandra Pinpoints Cause of Galactic Wind.

NASA's Chandra X-ray Observatory has revealed the effects of powerful winds launched from the center of the nearby spiral galaxy NGC 253, which is located 11.4 million light-years from Earth. The galactic wind is composed of gas with temperatures of millions of degrees that glows in X-rays. An amount of hot gas equivalent to about two million Earth masses blows away from the galaxy's center every year. The focused nature of the wind observed by researchers supports the idea that the super star clusters are a major source of the wind.

via Phys.org|

#astronomy #chandra-x-ray-observatory #galactic-wind