H5N1 gigantic mutual frigidity front end inwards the Perseus galaxy cluster has been observed past times a trio of X-ray telescopes.
 |
| Credit: NASA/CXC/GSFC/S. Walker, ESA/XMM, ROSAT |
The gravitational push clit of a larger cluster tugs a smaller cluster closer, resulting inwards gas inwards the nub of the cluster beingness sloshed unopen to similar liquid inwards a glass. This creates a mutual frigidity front end inwards a spiral designing moving outwards from the nub in addition to these sloshing mutual frigidity fronts tin render a probe of the intercluster medium.
Cold fronts are the oldest coherent structures inwards cool nub clusters in addition to this i has been moving away from the centre of the cluster for over 5 billion years – longer than our Solar System has been inwards existence. The long curving construction spans unopen to ii 1000000 lite years in addition to is travelling at unopen to l kilometres per second.
The icon combines information from NASA's Chandra X-Ray observatory, ESA's XMM-Newton in addition to the High German Aerospace Centre-led ROSAT satellite. Chandra also took a separate close-up of the upper left of the mutual frigidity front, revealing some unexpected details.
The Perseus galaxy cluster contains thousands of galaxies in addition to a supermassive dark hole at the centre. The dark hole is responsible for creating a harsh environs of audio waves in addition to turbulence that should erode a mutual frigidity front end over time, smoothing out the previously abrupt edges in addition to creating gradual changes inwards density in addition to temperature. Instead, the high-resolution Chandra icon showed a surprisingly abrupt border on the mutual frigidity front, in addition to a temperature map revealed that the upper left of the mutual frigidity front end is divide inwards two.
The sharpness of the mutual frigidity front end suggests it has been preserved past times stiff magnetic fields wrapped unopen to it, essentially acting every bit a shield against the harsh environment. This magnetic "draping" prevents the mutual frigidity front end from diffusing in addition to is what has allowed it to last in addition to therefore good for over 5 billion years every bit it drifts away from the centre of the cluster.
Source: European Space Agency [October 29, 2018]
Sumber http://archaeologynewsnetwork.blogspot.com
Buat lebih berguna, kongsi:
