Sentences with phrase «radiation ionizes gas»

The team used several hundred thousand compute hours at NERSC to produce a series of 2D and 3D simulations that helped them examine the role of dark matter halo photoevaporation — where energetic radiation ionizes gas and causes it to disperse away from the halo — played not just in the early formation of stars but also the assembly of later galaxies.

Not exact matches

Producing artificial aurorae has taught scientists unexpected lessons about how gases are ionized in the ionosphere, a process that helps protect Earth from harmful ultraviolet solar radiation.

As our solar system slowly orbits around the galactic center, the sun's ultraviolet radiation carves out an egg - shaped region of ionized hydrogen atoms surrounded by neutral hydrogen gas.

One strong possibility is that the ultraviolet (UV) radiation from the first - generation galaxies in the one - billion - year - old Universe ionized the hydrogen gas.

For most people, the risk of absorbing excess ionizing radiation comes mainly through breathing radon, a gas released by uranium and thorium in soils.

Measuring 300 light - years across, the bubble, known as G52L, is filled with hydrogen gas that is ionized by the energetic radiation of embedded young stars.

«The UV radiation from a massive star will ionize and heat up disks of gas surrounding nearby low - mass stars,» Bally says.

The intense radiation from an AGN can ionize the gas around it (called photoionization), and this may be one mechanism at work in MAMMOTH - 1.

In follow - up observations from Kitt Peak National Observatory and the Lick Observatory, his team found 20 galaxies that had gas that was ionized by radiation from a quasar, rather than from the energy of star formation.

In particular, one DOG (WISE1029 +0501, hereafter WISE1029) is outflowing gas ionized by the strong radiation from its supermassive black hole.

A widely accepted idea has described this phenomenon as: the strong radiation from the galactic center in which the supermassive black hole locates ionizes (* 1) the surrounding gas and affects even molecular gas that is the ingredient of star formation; the strong radiation activates (* 2) or suppresses (* 3) the star formation of galaxies.

This discovery refutes existing theories, indicating that ultraviolet radiation from the star would destroy molecular gas and dust, and bringing the first direct detection of ionized gas wind along with a supersonic jet and an accretion disk.

Stars emit UV radiation and ionizing photons necessary to heat and strip surrounding gas.

Massive stars emit a large amount of ultraviolet radiation that destroys the molecules and dust surrounding the star and creates ionized gas, which in turn impedes the star's growth process.

«Photo - dissociation» or «Photon - dominated» Regions (PDRs) exist in the ISM at the interfaces between photo - ionized and molecular gas, where UV radiation sets the ionization state, chemistry, and excitation at the edge of the molecular zone.

The warmer dust component is spatially correlated well with the [O III] emission and hence likely to be associated with the highly - ionized gas locally heated by intense radiation from the two clusters.