|Title||Thermal Emission or Charge Exchange from the North Polar Spur|
|Author||Dr Dimitra Koutroumpa|
|Description||We propose a coupled observation of the North Polar Spur (NPS) and a nearby off-spur region in order to determine whether the soft X-ray spectrum of the NPS is solely produced by hot plasma thermal emission, or whether some fraction of the emission is produced by charge exchange (CX) collisions between neutral particles and ions within the hot gas envelope of the Loop I-NPS superbubble. Our goal is to confirm and measure the shift in energy of the He-like O VII and Ne IX triplet centroids measured at low significance in previous observations of the NPS with XMM-Newton and Suzaku. These shifts are predicted by the CX emission models but not in thermal emission models. We request the new ON-OFF observations of the NPS in order to avoid large spatial variations of the cosmic background|
|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, 2012-04-12T00:00:00Z, 065163, 17.56_20190403_1200. https://doi.org/10.5270/esa-agj074g|