Sentences with phrase «galactic winds»

Expanding the size of the simulation will allow the team to test an alternate theory for the emergence of galactic wind in disk galaxies like M82.

Furthermore, the team can zoom in on parts of the simulation to study phases and properties of galactic wind in isolation.

The observed CH + reveals dense shock waves, powered by hot, fast galactic winds originating inside the galaxies» star forming regions.

Mike Dopita and his colleagues at the Australian National University in Canberra, working with a team led by Zlatan Tsvetanov of Johns Hopkins University in Baltimore, believe that galactic winds provide the answer.

The results allowed the team to rule out a potential mechanism for galactic wind.

To better understand how galactic wind affects star formation in galaxies, a two - person team led by the University of California, Santa Cruz, turned to high - performance computing at the Oak Ridge Leadership Computing Facility (OLCF), a US Department of Energy (DOE) Office of Science User Facility located at DOE's Oak Ridge National Laboratory (ORNL).

As a result, moving in, around, and through such a tiny galaxy is quite easy to do, making them far more likely to be filled with streams and outflows of speedy charged particles known as galactic winds, which can flood such galaxies with little effort.

New stars are springing into life within the bright, colorful «head» of NGC 4861 and ejecting streams of high - speed particles as they do so, which flood outwards to join the wider galactic wind.

Data gathered from such observations can help Robertson and Schneider gauge if they are on the right track when simulating galactic wind.

«The process of generating galactic winds is something that requires exquisite resolution over a large volume to understand — much better resolution than other cosmological simulations that model populations of galaxies,» Robertson said.

Beyond breaking records, Robertson and Schneider are striving to uncover new details about galactic wind and the forces that regulate galaxies, insights that could improve our understanding of low - mass galaxies, dark matter, and the evolution of the universe.

Some galaxies drive galactic winds, expelling dust and gas at hundreds of kilometers per second into the intergalactic medium, the space between galaxies.

Galaxies are far apart from each other, so even though galactic winds propagate at several hundred kilometers per second, this process occurred over several billion years.

The simulations show that supernova explosions eject copious amounts of gas from galaxies, which causes atoms to be transported from one galaxy to another via powerful galactic winds.

This transfer of mass through galactic winds can account for up to 50 percent of matter in the larger galaxies.

These winds are caused by starlight exerting pressure on the dust and gas; the fastest galactic winds are in distant galaxies that are forming stars more rapidly than the Milky Way.

The team determined that galactic winds alone could not replenish the newly revealed gaseous reservoirs and suggests that the mass is provided by galactic mergers or accretion from hidden streams of gas, as predicted by current theory.

Specifically, UC Santa Cruz astrophysicist Brant Robertson and University of Arizona graduate student Evan Schneider (now a Hubble Fellow at Princeton University), scaled up their Cholla hydrodynamics code on the OLCF's Cray XK7 Titan supercomputer to create highly detailed simulations of galactic wind.

Many other potential applications of this dataset are explored in the series of papers, and they include studying the role of faint galaxies during cosmic reionisation (starting just 380,000 years after the Big Bang), galaxy merger rates when the Universe was young, galactic winds, star formation as well as mapping the motions of stars in the early Universe.

It's possible that this relatively light galaxy has too little mass — or gravitational pull — to retain the metals, and that a rush of gas called a galactic wind swept them away.

These galactic winds can be powered by the ongoing process of star formation, which involves huge amounts of energy.

This star - making frenzy gives rise to galactic wind that pushes out more gas than the system keeps in, leading astronomers to estimate that M82 will run out of fuel in just 8 million years.

These outflows are driven by the life and death of stars, specifically stellar winds and supernova explosions, which collectively give rise to a phenomenon known as «galactic wind.»

While NGC 4861 would be a perfect candidate to study such winds, recent studies did not find any galactic winds in it.

This galactic - scale energetic wind is called a «galactic wind» or «superwind.»

They found previously unseen reservoirs of cold gas rocked by turbulence from the galactic winds.

The earth's protective atmosphere or «skin» extends beyond 3,200 km above sea level to the large magnetic fields, called the Van Allen Belts, which can capture the charged particles sprayed through the cosmos by the solar and galactic winds.