Planetary Group Seminar: Soft Protons in the Magnetosphere focused by X-ray Telescopes (F. Gastadello)
Oct 11, 2017
11:00 - 12:00
One of the major and unfortunately unforeseen sources of background for the current generation of X-ray telescopes, in particular the ESA X-ray satellite XMM-Newton, is due to soft (few tens-hundreds of keV) protons concentrated by the X-ray mirrors. The observing time lost is 40% in the case of XMM, affecting all the major broad science goals of this observatory, ranging from cosmology to astrophysics of neutron stars and black holes. The soft proton background can impact dramatically future large X-ray missions such as the ESA planned Athena mission. We will review the still poor understanding of the physical process at work and the connection with the magnetospheric population and acceleration sites originating the phenomenon.