A dataset provided by the European Space Agency

Name 009320
Title Resonance Scattering Effect of Fe-K Emission Lines in anIntracluster Medium
URL

http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0093200101

DOI 10.5270/esa-bpt220c
Author Prof Koujun Yamashita
Description It is noticeable that the optical depth of Fe-Ka resonance lines is estimated to be larger than unity in an intracluster medium due to the resonance scattering effect. Therefore the intensity of Fe-Ka lines is suppressed in the central core region and enhanced in the outer envelope. The intensity ratios of Fe-Ka to Kb and He-like to H-like Fe-Ka are good indicators to derive the optical depth of Fe-Ka by means of the difference of the resonance scattering cross section. Our objectives are to correctly determine the Fe abundance and to derive the absolute scale of a cluster. We propose the observation of A1650 (z=0.0845) which is isothermal spherical symmetric with the angular size of 30. fit in the EPIC field of view and the plasma temperature of 6.1keV.
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Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2001-12-29T22:51:31Z/2001-12-30T10:49:54Z
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 2003-01-25T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2003-01-25T00:00:00Z, 009320, 17.56_20190403_1200. https://doi.org/10.5270/esa-bpt220c