|Title||The Physics of Cosmic Shocks: The NW Merger Shock and Radio Relic in Abell 3667|
|Author||Prof Craig Sarazin|
|Description||Abell 3667 is the archetype of a merging cluster with radio relics. The NW relic is the brightest cluster relic or halo known. This region was imaged with XMM in AO-7. We detected a X-ray brightness and hardness jump at the edge of the NW relic. This could be due to a merger shock, or to inverse Compton (IC) emission from the relic; both are consistent within the errors. We propose a long observation to determine the contributions of shock and IC emission. Comparison of the shock properties and the radio relic will be a critical test of the shock acceleration model for relics. The relic IC emission will give the magnetic field and cosmic ray energy of the relic. We will determine the efficiency of particle acceleration, and provide the first data on the physics of cosmic shock fronts.|
|Publication||No observations found associated with the current proposal|
|Instrument||EMOS1, EMOS2, EPN, OM, RGS1, RGS2|
|Mission Description||The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations.
Since Earth's atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis.
|Publisher And Registrant||European Space Agency|
|Credit Guidelines||European Space Agency, 2011-11-30T00:00:00Z, 065305, 17.56_20190403_1200. https://doi.org/10.5270/esa-af6n2kd|