A dataset provided by the European Space Agency

Name 006894
Title X-ray study of two newly discovered very distant clusters of galaxies
URL

http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0068940101
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0068940401
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0068940501
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0068940601

DOI 10.5270/esa-7h5dhgt
Author Dr Monique Arnaud
Description The finding and subsequent study of high z clusters of galaxies is very important for cosmology as it puts constraints on the rates and physical processes of structure formation. We propose to observe two newly discovered very distant cluster candidates with XMM. Both clusters were found in the EIS survey with subsequent infrared follow-up observations - an approach which recently proved to be a powerful tool to find high z clusters, which emits in X-rays. Both candidates, with estimated redshifts of z~1.7 and z~1.2 show very high galaxy overdensities, and are thus very likely to be already evolved systems. With the XMM data we will be able to determine the X-ray luminosities of these sources down to low fluxes. Physical studies will be possible if they
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The origin of X-ray emission of two distant (z >1) cluster candidates with XMM-Newton . Neumann, D. M., Arnaud, M., et all. . A&A . 406-789 . 2003 . 2003A&A...406..789N ,
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The cosmol...
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2001-09-30T23:12:12Z/2001-10-07T10:21:22Z
Version 17.56_20190403_1200
Mission Description The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's 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 Earth's 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 2002-10-30T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2002-10-30T00:00:00Z, 006894, 17.56_20190403_1200. https://doi.org/10.5270/esa-7h5dhgt