A dataset provided by the European Space Agency

Name 014988
Title Radio Halos and Relics and Merger Shocks in Clusters of Galaxies


DOI https://doi.org/10.5270/esa-k796ux9
Author Dr Craig Sarazin
Description Radio halos and relics are important diagnostics for identifying clusters undergoing a major merger. We propose observations of 4 clusters in which we have recently found a halo or relic. They all show other evidence of a merger. Our aims are to image shocks in the intracluster medium due to the merger, and to detect inverse Compton from the radio-emitting electrons, both in images and in spectra. Radio, IC X-ray, and shock measurements will determine the cluster magnetic field and the efficiency of electron acceleration. Shock physics will determine the efficiency of thermalization in shocks and whether electrons undergo collisionless heating. Persistence of merger features tells us about the dynamics of mergers and about peaks in the dark matter distribution in clusters.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2003-08-01T04:25:52Z/2003-08-01T11:46:05Z
Version 17.56_20190403_1200
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.
Creator Contact https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published 2004-10-31T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2004-10-31T00:00:00Z, 014988, 17.56_20190403_1200. https://doi.org/10.5270/esa-k796ux9