An 80 ks XMM-Newton observation, along with a 40 ks Chandra pointing, of themassive group centered on the cD galaxy NGC4839, which is falling into the Comacluster core, will provide the first excellent map of the merging subcluster andallow the physics and dynamics of this merger to be studied in unprecedenteddetail. The proposed observations will determine the nature of the hot core inNGC4839, including the AGN outburst power. We also will measure the total (3D)velocity of the merging group and the properties of the shock/sheath region atthe interface between the Coma ICM and the group gas, and finally, will computethe gas mass in NGC4839.s 400 kpc tail to determine the importance of mixing ofcluster gas with the stripped group gas.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2010-06-16T11:44:20Z/2010-12-11T06:41:06Z
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 William Forman, 2012, 'Understanding the Physics and Dynamics of NGC4839 Group as It Falls into Coma', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-kh5i82u
