Tag

Galactic Wind

All articles tagged with #galactic wind

space13 days 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

space16 days 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