| Proposal ID | 014704 |
| Title | Measuring ICM Temperatures at Large Radii in Rich Clusters of Galaxies |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0147040101 |
| DOI | https://doi.org/10.5270/esa-t5uxsg1 |
| Principal Investigator, PI | Dr Sabrina De Grandi |
| Abstract | The radial temperature profile of the X-ray emitting intra-clustermedium (ICM) is key observable in determining the total gravitationalmass of clusters of galaxies. To date different studies (ROSAT, ASCAand BeppoSAX) have found conflicting results regarding temperaturegradients in clusters. We propose to observe the outer clusterregions (i.e., $> 50%-60%$ of the virial radius), of three nearbyrelaxed clusters, to definitely assess whether a temperature decline ispresent in these regions and, in presence of a gradient, to determinethe slope of the temperature profile, which carries importantinformation on the thermodynamical status of the ICM. |
| Publications |
|
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2003-08-10T06:12:26Z/2003-08-10T14:56:14Z |
| 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 | 2004-09-01T00:00:00Z |
| Last Update | 2026-07-09 |
| Keywords | "BeppoSAX", "thermodynamical status", "nearby relaxed clusters", "ROSAT", "total gravitational mass", ".", "radial temperature profile", "temperature profile", "icm temperatures", "virial radius", "outer cluster region", " $>", "temperature decline", "key observable", "rich cluster", "regarding temperature gradients" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Sabrina De Grandi, 2004, 'Measuring ICM Temperatures at Large Radii in Rich Clusters of Galaxies', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-t5uxsg1 |
| Rights | Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license. |