A dataset provided by the European Space Agency

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


DOI https://doi.org/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.
Publication No observations found associated with the current proposal
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