Proposal ID | 076247 |
Title | An XMM-Newton Measurement of the Fastest Known Cluster Merger in the Universe |
Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0762470101 |
DOI | https://doi.org/10.5270/esa-th5r62q |
Principal Investigator, PI | Dr Tony Mroczkowski |
Abstract | To employ galaxy clusters as cosmological standards and astrophysicallaboratories, we must better understand how the cluster dynamical state maps toits observational properties in extreme circumstances, yet fewer than a dozenmergers have velocity measurements reliable enough for detailed modeling. Onedramatic merger, selected for follow-up X-ray observations by its ultra-steepspectrum radio emission, is Abell 2443. Recently, a 98 ksec Chandra observationprovided 2.9-sigma evidence that the bullet-like core of A2443 is significantlyblueshifted with respect to its surroundings. We propose deep XMM observationsto answer the question, What is the true line of sight component of the gassvelocity? |
Publications |
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Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
Temporal Coverage | 2015-05-20T08:39:33Z/2015-05-30T15:46:06Z |
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 | 2016-06-16T22:00:00Z |
Last Update | 2025-01-27 |
Keywords | "velocity ?''", "XMM", "velocity measurements reliable", "dozen mergers", "cosmological standards", "sight component", "astrophysical laboratories", "abell 2443", "Abell 2443", "cluster merger", "XMM-Newton", "xmm newton measurement", "employ galaxy cluster", "sigma evidence", "deep xmm", "spectrum radio emission", "cluster dynamical", "98 chandra" |
Publisher And Registrant | European Space Agency |
Credit Guidelines | European Space Agency, Dr Tony Mroczkowski, 2016, 'An XMM-Newton Measurement of the Fastest Known Cluster Merger in the Universe', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-th5r62q |