| Proposal ID | 060474 |
| Title | Unraveling the Dynamical States of Abell 2345 and 2254 |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0604740101 |
| DOI | https://doi.org/10.5270/esa-zp7pa9v |
| Principal Investigator, PI | Mr Daniel Wik |
| Abstract | Of the clusters hosting the 30 brightest radio halos and relics, only A2345 andA2254 have not been observed by XMM, Chandra, or Suzaku. The ROSAT HRI images ofthese clusters suggest significant substructure, almost certainly due to recentmergers. We will detect merger shocks in both clusters and a cold front inA2345, if they are present. The temperature structure in the core of bothclusters will be mapped. For A2345, we will determine the ICM temperature at thelocation of its relics and detect surface brightness discontinuities due toshock fronts, which will test the shock acceleration model for producing radiorelics. Both clusters will be detected out to R_500, and their spectra will beused to constrain the presence of non-thermal inverse Compton emission. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2010-04-24T09:51:25Z/2010-04-25T11:46:40Z |
| Version | 17.56_20190403_1200 |
| Mission Description | The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs 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 Earths 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 | 2011-05-13T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "merger shoc", "surface brightness discontinuities", "Abell 2345", "producing radio relics", "ROSAT", "rosat hri images", "shock acceleration model", "cold front", "temperature structure", "icm temperature", "XMM", "abell 2345", "brightest radio halos", "shock fronts" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Mr Daniel Wik, 2011, 'Unraveling the Dynamical States of Abell 2345 and 2254', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-zp7pa9v |