A dataset provided by the European Space Agency

Proposal ID 015090
Title A study of dark subclusters found by weak lensing
Download Data Associated to the proposal

https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0150900101
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0150900501

DOI https://doi.org/10.5270/esa-kycrmwn
Principal Investigator, PI Dr Haakon Dahle
Abstract We propose to observe three rich clusters of galaxies tolook for significant dark subclusters that are not seen in opticalimages but are inferred from weak lensing mass maps. Our candidatescome from the largest weak lensing study yet of 39 x-ray selectedclusters. Detecting these subclusters and measuring their propertieslike mass, temperature and metallicity would constitute the firstcomprehensive study of its kind, and provide important clues to thenature of stochastic biasing and galaxy formation.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2003-04-30T21:31:09Z/2003-10-06T16:02:41Z
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 2004-10-28T00:00:00Z
Keywords "dark subclusters", "rich cluster", "stochastic biasing", "galaxy formation", "weak lensing", "optical images", "largest weak lensing"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Haakon Dahle, 2004, 'A study of dark subclusters found by weak lensing', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-kycrmwn