| Proposal ID | 090074 |
| Title | Gas clumping in cluster outskirts under the microscope: the Virgo cluster |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0900740101 |
| DOI | https://doi.org/10.57780/esa-80ls5cx |
| Principal Investigator, PI | Prof Stephen Walker |
| Abstract | Suzaku observations of the outskirts of the Virgo cluster have revealed a veryhigh gas mass fraction to the North and South, while the entropy unphysicallydecreases outwards. This suggests a very high level of clumping and/or nonthermal pressure support. XMM.s high spatial resolution allows it to constrainthe level of gasclumping, by binning images into a tessellation. Here we propose 5 XMMobservations, totaling 155ks, to cover the regions of Virgo where the Suzaku hasfound the highest gas mass fraction and lowest entropy. This will allow us toconstrain gas clumping, to clumping correct the thermodynamic profiles, andinfer the level of non thermal pressure support. Virgo.s proximity allows us to probe clumping with 100x better spatial resolution than before. |
| Publications | No publications found for current proposal! |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2022-06-12T09:14:09Z/2023-06-18T12:11:44Z |
| Version | 20.10_20230417_1156 |
| 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 | 2024-07-01T00:00:00Z |
| Keywords | "constrain gas clumping", "gas clumping", "proximity allows", "totaling 155", "binning images", "thermodynamic profiles", "XMM", "virgo cluster", "cluster outskirts", "spatial resolution allows", "lowest entropy", "probe clumping", "gas mass fraction", "spatial resolution", "clumping correct", "thermal pressure support" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Prof Stephen Walker, 2024, 'Gas clumping in cluster outskirts under the microscope: the Virgo cluster', 20.10_20230417_1156, European Space Agency, https://doi.org/10.57780/esa-80ls5cx |