The electrodes for the Wendelstein 7-X glow discharge system have been designed, tested and manufactured.
Still, astronomers stuck to the idea, because even NASA's keen-eyed Chandra X-ray Observatory couldn't resolve the diffuse x-ray glow into point sources (Science, 31 August 2001, p.1633).
Dr. Fabian was the leader on an international team that used NASA's Chandra X-ray Observatory to detect the black hole's notes as ripples of luminosity in the X-ray glow of the cluster.
Cosmologists use this X-ray glow to find clusters in the deep of spacetime.
What ROSAT saw was an X-ray glow from the region around NGC 2300, presumably emitted by hot gas filling the local intergalactic space.
Astronomers wanted such a detector partly because they hoped to see not just a steady X-ray glow, but also a direct signature of the dynamic, whirling motion of the gases around the neutron star.
The sound waves appear as bright arcs in the X-ray glow of hot gas that suffuses the M87 galaxy and the Virgo cluster in which it sits One of them makes an entire circle around the nucleus, at a radius of about 45,000 light-years.
Now, Russian astrophysicists claim a similar result for the Milky Way's x-ray glow.
"Diffuse emission is [still] necessary" to explain the intensity of the x-ray glow.
Using survey data from NASA's Rossi X-ray Timing Explorer, Revnivtsev and his colleagues (both from Max Planck and from the Space Research Institute in Moscow) discovered that the distribution of the Milky Way's x-ray glow exactly matches the distribution of near-infrared light from low-mass stars.
Instead, the researchers have proposed, the x-ray glow betrays the presence of a shock wave somewhat akin to a sonic boom, triggered by a dwarf galaxy about 1/10,000th the size of NGC 1232 or smaller slamming into the diffuse halo of gas surrounding its larger cousin.
