| Proposal ID | 009362 |
| Title | FROM THE CLUSTER TEMPERATURE FUNCTION TO THE MASS FUNCTION AT LOW Z |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0093620101 |
| DOI | https://doi.org/10.5270/esa-pofj5yw |
| Principal Investigator, PI | Dr Maxim Markevitch |
| Abstract | The cluster mass function is a direct and sensitive cosmological probe. Atpresent, however, a direct derivation of the mass function is impossible, atleast at low redshifts. Thus a convenient proxy, the temperature function, isused for cosmological studies, involving a rather uncertain temperature-massconversion. This conversion must be calibrated, and XMM is perfectly suited forthis task. We propose to measure the gas temperature distribution in threenearby, relatively relaxed clusters spanning a range of temperatures from 4 to10 keV: A133, A1650 and Triangulum Australis. These observations will providehighly accurate mass values within r_500. Together some nearby relaxed clustersalready in the program, these systems will establish the M-T relation at low z |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2001-02-17T13:51:06Z/2001-03-02T02:46:24Z |
| 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 | 2003-01-06T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "gas temperature distribution", "triangulum australis", "mass function", "perfectly suited", "sensitive cosmological probe", "temperature function", "low redshifts", "convenient proxy", "cluster mass function", "XMM", "low z", "nearby relaxed cluster", "cluster temperature function", "mass values" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Maxim Markevitch, 2003, 'FROM THE CLUSTER TEMPERATURE FUNCTION TO THE MASS FUNCTION AT LOW Z', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-pofj5yw |