Tag

M82

All articles tagged with #m82

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

astronomy1 month ago•4 min saved

Ultra-energetic Cosmic Ray Amaterasu Traced to M82, a Nearby Starburst Galaxy

A 244 EeV cosmic ray named Amaterasu, detected in 2021 by the Telescope Array Project, is now thought to originate from a nearby star-forming galaxy, most plausibly M82, rather than the Local Void, after statistical reconstructions that combine simulations of cosmic-ray propagation with observations.

via The Daily Galaxy|

#amaterasu #astronomy #local-void

astronomy2 years ago•4 min saved

"James Webb Telescope Uncovers Spectacular Starburst in Ancient Galaxy"

NASA's James Webb Space Telescope has provided detailed observations of the starburst galaxy Messier 82 (M82), located 12 million light-years away, revealing a frenzy of star formation activity 10 times faster than the Milky Way. The telescope's NIRCam instrument captured intricate substructures, including concentrations of iron and molecular hydrogen, as well as clumpy tendrils of a galactic wind. These findings challenge existing theories and raise new questions about star formation, with further data and spectroscopic observations from Webb expected to provide deeper insights into the processes occurring in galaxies like M82.

via Science@NASA|

#astronomy #james-webb-space-telescope #m82