A dataset provided by the European Space Agency

Name: Understanding the Nature and Environment of Ultra-Steep Spectrum Radio Relics
Published: 2019-08-24T22:00:00Z

Proposal ID	082169
Title	Understanding the Nature and Environment of Ultra-Steep Spectrum Radio Relics
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0821690101 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0821690301
DOI	https://doi.org/10.5270/esa-uogus5s
Principal Investigator, PI	Dr Scott Randall
Abstract	We propose follow-up observations of three galaxy clusters containingultra-steep spectrum (USS) radio relic sources that have existing low-frequencyGMRT observations. Comparing the morphology and thermal structure of the ICM tothe diffuse radio emission will allow constraints to be placed on the nature ofthese relatively poorly studied sources. For example, a correlation betweenmerger shocks and radio emission implies direct shock acceleration, as withclassical radio relics, whereas a lack of correlation in a disturbed systemsuggests acceleration of an existing particle population by adiabaticcompression.
Publications	The Planck clusters in the LOFAR sky. I. LoTSS-DR2: New detections and sample overview \|Botteon, A., Shimwell, T. W., et al. \| A&A \| 660-78 \| 2022 \| 2022A&A...660A..78B \| http://ui.adsabs.harvard.edu/#abs/2022A&A...660A..78B The Planck clusters in the LOFAR sky. III. LoTSS-DR2: Dynamic states and density fluctuations of the intracluster medium \|Zhang, X., Simionescu, A., et al. \| A&A \| 672-42 \| 2023 \| 2023A&A...672A..42Z \| http://ui.adsabs.harvard.edu/#abs/2023A&A...672A..42Z The Planck clusters in the LOFAR sky. IV. LoTSS-DR2: Statistics of radio haloes and re-acceleration models \|Cassano, R., Cuciti, V., et al. \| A&A \| 672-43 \| 2023 \| 2023A&A...672A..43C \| http://ui.adsabs.harvard.edu/#abs/2023A&A...672A..43C From Active Stars to Black Holes: A Discovery Tool for Galactic X-Ray Sources \|Rodriguez, Antonio C., \| PASP \| 136-054201 \| 2024 \| 2024PASP..136e4201R \| http://ui.adsabs.harvard.edu/#abs/2024PASP..136e4201R
Instrument	EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage	2018-04-20T20:52:21Z/2018-08-13T07:06:41Z
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	2019-08-24T22:00:00Z
Keywords	"relatively poorly", "merger shoc", "diffuse radio emission", "disturbed system", "galaxy cluster", "classical radio relics", "shock acceleration", "adiabatic compression", "radio emission implies", "spectrum radio relics", "thermal structure", "existing particle population"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Scott Randall, 2019, 'Understanding the Nature and Environment of Ultra-Steep Spectrum Radio Relics', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-uogus5s