| 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 | 21.51_20241115_1113 |
| 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 | 2026-07-09 |
| Keywords | "low cluster mass", "XMM-Newton", "XMM", "cy21 chandra", "trace shoc", "cluster core", "double relics", "spectacular lofar", "merging galaxy cluster", "bright relics", "rare example", "cluster merger history", "lofar survey", "relic formation models", "low mass cluster", "temperature substructure", "merging clusters", "radio sources", "diffuse radio sources", "xmm newton", "tight constraints" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Andra Stroe, 2021, 'A spectacular LOFAR-selected merging galaxy cluster', 21.51_20241115_1113, European Space Agency, https://doi.org/10.57780/esa-zgrl91c |
| Rights | Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license. |