
| Proposal ID | 082104 | 
| Title | The hidden side of galaxy clusters: diffuse emission in the HETDEX field | 
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0821040101  | 
    
| DOI | https://doi.org/10.5270/esa-mt6y0a0 | 
| Principal Investigator, PI | Prof Marcus Bruggen | 
| Abstract | The origin of diffuse radio sources, so-called cluster radio halos and relics isstill shrouded in mystery. The LOFAR Two-Metre Sky Survey of the 350 sq degHETDEX field is breaking new ground in the study of diffuse radio sources as itshows diffuse emission in a large fraction of the SZ-detected clusters in thatarea. In particular, it has revealed diffuse radio sources in a number oflow-mass clusters. While this field has good multi-wavelength coverage, there isrelatively little X-ray data of the clusters that host this newly discoveredemission. The aim of this proposal is to characterize the physical propertiesand the dynamical state of all Planck-detected clusters in this sample. | 
| Publications | 
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 | 
| Temporal Coverage | 2018-07-06T17:45:53Z/2018-12-17T11:51:08Z | 
| 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 | 2020-01-17T23:00:00Z | 
| Last Update | 2025-08-04 | 
| Keywords | "physical properties", "hetdex field", "metre sky survey", "multi wavelength coverage", "diffuse radio sources", "diffuse emission", "low mass clusters" | 
| Publisher And Registrant | European Space Agency | 
| Credit Guidelines | European Space Agency, Prof Marcus Bruggen, 2020, 'The hidden side of galaxy clusters: diffuse emission in the HETDEX field', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-mt6y0a0 |