| Proposal ID | 086297 |
| Title | A spectacular LOFAR-selected merging galaxy cluster |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0862970101 |
| DOI | https://doi.org/10.57780/esa-zgrl91c |
| Principal Investigator, PI | Dr Andra Stroe |
| Abstract | Relics are diffuse radio sources thought to trace shocks at the periphery ofmerging clusters. LOFAR, with its unique resolution and sensitivity, isrevolutionizing the field by opening a new window of discovery. The LOFAR surveyrecently discovered a rare example of double relics in a low-mass cluster,confirmed as a 3:1 merger by our Cy21 Chandra observations. The bright relicsare located exceptionally far away from the cluster core -- at about R500 (1.3Mpc). The properties of the radio sources are hard to reconcile with currentrelic formation models, given the low cluster mass. We propose XMM-Newtonobservations to study the luminosity and temperature substructure, understandthe cluster merger history and place tight constraints on relic formation models. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2020-05-05T02:14:25Z/2020-05-07T18:26:10Z |
| Version | 18.02_20200221_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 | 2021-05-21T00:00:00Z |
| Last Update | 2026-03-04 |
| Keywords | "cluster merger history", "bright relics", "double relics", "spectacular lofar", "tight constraints", "low mass cluster", "diffuse radio sources", "XMM-Newton", "rare example", "merging galaxy cluster", "radio sources", "merging clusters", "trace shoc", "temperature substructure", "lofar survey", "cluster core", "low cluster mass", "xmm newton", "cy21 chandra", "XMM", "relic formation models" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Andra Stroe, 2021, 'A spectacular LOFAR-selected merging galaxy cluster', 18.02_20200221_1200, European Space Agency, https://doi.org/10.57780/esa-zgrl91c |