We propose to use the XMM-Newton EPIC instrument to map the distribution of hotplasma in the inner region of the Milky Way using the proven method of shadowingobservations. By using a large sample of molecular clouds at varying distancesand sky positions, the three-dimensional distribution of plasma responsible forthe observed 3/4 keV diffuse background in the Galactic plane can be determined.This will provide checks on the evolution of the interstellar medium andconstraints on the energy balance and chemical evolution of our Galaxy.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2006-04-11T12:37:00Z/2006-10-06T12:55:44Z
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 Steve Snowden, 2007, 'Mapping the Distribution of Hot Gas in the Inner Milky Way', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-qiaccx8
