These accelerators work by shooting pulses of intense laser light into plasma to create a wave rippling through the cloud
of ionised gas, leaving a wake of electrons akin to those that form behind a speedboat in water.
The Lancaster team used the Subaru and Keck telescopes on Hawaii, and the Very Large Telescope in Chile to discover several galaxies which seem to have large bubbles
of ionised gas around them, allowing light to pass through.
The region of sky pictured is listed in the Sharpless catalogue of H II regions: interstellar clouds
of ionised gas, rife with star formation.
The surrounding cloud
of ionised gas is producing more microwaves than clouds around other star clusters in our galaxy.
Not exact matches
The light's wavelength can also change noticeably when photons are scattered off
ionised gas moving through space, providing a way to probe the velocity
of such
gas.
This would create a layer
of plasma from
ionised gas, which would generate a thermonuclear shock wave that ripples through the fuel, promoting compression (Energy & Environmental Science, DOI: 10.1039 / b904609g).
The team analysed the effect
of this energetic radiation on the pillars: a process known as photoevaporation, when
gas is
ionised and then disperses away.
H II regions like RCW 106 are clouds
of hydrogen
gas that are being
ionised by the intense starlight
of scorching - hot, young stars, causing them to glow and display weird and wonderful shapes.
Ionised clouds
of gas have been found close enough to home to keep the galaxy ablaze.
But Hayabusa has been hobbling home without the full use
of its four ion engines, which
ionise xenon
gas and then use electric fields to accelerate the ions, providing a steady — though weak — thrust.
Clouds
of electrons created by
ionised gas in the beam chamber and microscopic dust particles — playfully known as unidentified falling objects, or UFOs — are interrupting the beams and making it harder to get the LHC running consistently.
In planetary nebulae, thought to be the evolved stage
of pre-planetary nebula, the core is exposed and the hotter radiation it emits
ionises the
gas in the now weaker jets, which in turn glow.
Astronomers thought that
ionised gas created by the first generation
of stars might be mimicking the imprint
of inflation by scattering the microwaves on their way to us from distant parts
of the universe.
The contrasting faint reddish clouds that seem to weave between the stars are composed
of ionised hydrogen
gas.
BURPS
of hot
ionised gas from the sun can knock out satellites and power grids when they hit Earth (New Scientist, 21 March, p 31).
It would take a huge amount
of energy to
ionise all this
gas, but there was no hint
of a source.
When the radio waves pass through the galaxy, a region in which there is both a magnetic field and
ionised gas, the direction
of polarisation is changed, or «rotated».
These are the glowing remains
of the stellar envelope
of gas ejected during the AGB phase, which is
ionised by ultraviolet radiation emitted by the central star.
This star - forming region
of ionised hydrogen
gas is in the Large Magellanic Cloud, a small galaxy which neighbours the Milky Way.
Dr Shannon explained that the vast spaces between objects in the Universe contain nearly invisible
gas and a plasma
of ionised particles that used to be almost impossible to map, until this pulse was detected.
The dark regions correspond to highly
ionised regions (such as those around protogalaxies) and the bright regions are dense, neutral pockets
of gas.
The energy released now heats the
gas till it becomes an
ionised plasma due to the high Temperature, the escape
of this centraally generated energy to the suface
of the «cloud», now a proto star will eventually stop the collapse as the outer layers also heat, and the outer plasma will become opaque to the EM radiation generted at the million degree buring interface.