|Title||ORIGIN OF THE X-RAY EMISSION OF THE GALACTIC CENTRE MOLECULAR CLOUD SGR B2|
|Author||Dr ANNE DECOURCHELLE|
|Description||We propose a 40 ks XMM-Newton observation of the molecular cloud Sgr B2 located in the Galactic Centre. Our aims are to map and characterize both the iron K line emission at 6.4 keV (line energy and linewidth) as well as its associated continuum (intensity and shape) to determine the nature of this emission: fluorescence due to irradiation by hard X-rays of molecular clouds or interaction of suprathermal electrons with the molecular gas and-or with the hot plasma at cloud boundaries ? This is a key issue for understanding the high energy diffuse emission from the Galactic Centre and Sgr B2 is the best location to carry out this study, as it exhibits the brightest 6.4 keV iron K line emission in the Galactic Centre, and the weakest diffuse thermal line emission.|
|Publication||No observations found associated with the current proposal|
|Instrument||EMOS1, EMOS2, EPN, OM, RGS1, RGS2|
|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.
|Publisher And Registrant||European Space Agency|
|Credit Guidelines||European Space Agency, 2005-09-26T00:00:00Z, 020393, 17.56_20190403_1200. https://doi.org/10.5270/esa-8w81lmh|