We propose XMM observations of four of the six brightest groups on the sky.These objects are bright enough that high quality RGS spectra of their centerswill be obtained. We will use these spectra to determine the correct spectralmodel for the gas. In particular, the RGS data will be very sensitive to thepresence of multi-temperature components. The EPIC data will contain a largenumber of counts which will allow us to determine how the temperature, densityand metallicity vary with radius. From this data we will construct detailedentropy profiles to test preheating and cooling models. We will also measurethe abundance of O, Fe, Si, S, Mg and Ne. The relative abundance of theseelements will be used to determined the stars responsible for the enrichment.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2002-12-20T23:01:26Z/2003-02-04T13:49:42Z
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.
European Space Agency, Dr John Mulchaey, 2004, 'The Origin of the Intragroup Medium', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-b6zrluz
