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DTSTART:19960101T000000 END:STANDARD BEGIN:STANDARD TZNAME:GMT TZOFFSETFROM:+0100 TZOFFSETTO:+0000 DTSTART:19961027T020000 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20260627T194239Z DTSTART;VALUE=DATE-TIME:20141008T160000 DTEND;VALUE=DATE-TIME:20141008T170000 SUMMARY:Exoplanetary Magnetic Fields and Magnetospheres: an Atmosphere Ma ss-loss and Magnetospheric Protection" by Max Khodachenko\, Austrian Aca demy of Sciences TZID:Europe/London UID:20141008-094d4345488da9fb0148b10b36d97fb8@warwick.ac.uk CREATED:20140926T081935Z DESCRIPTION:The continuously growing number of discovered exoplanets and accumulation of data regarding their physical and orbital characteristic s provides us with a broad material for the study of general principles and major trends of planetary evolution. It reshapes the whole field of “exoplanetology” from a vague speculative subject into a practical scien ce\, aimed at characterisation and understanding of the variety of disco vered extraterrestrial worlds. Investigation and characterisation of exo planetary magnetic fields and their role in evolution and habitability o f planetary systems is closely connected with the study of the whole com plex of stellar - planetary interactions\, including stellar wind plasma flows\, radiation\, and stellar and planetary gravity effects. A key el ement in the proposed approach is to take into account self-consistently the upper atmosphere of a close-orbit giant exoplanet (a so-called hot jupiter) as an expanding dynamical gas layer heated and ionised by the s tellar XUV radiation. Interaction of the outflowing plasma with the rota ting planetary magnetic dipole field leads to the development of a curre nt-carrying magnetodisk surrounding the exoplanet. The lecture will pres ent our recent theoretical and experimental results regarding developmen t of a generalized model of an exoplanetary magnetosphere with the conse quent account of the effects of an expanding upper atmospheric material and formation of an equatorial magnetodisk. The outcomes of the performe d theoretical\, experimental\, and numerical studies contribute to a dee per understanding of exoplanetary mass loss process and related problem of magnetospheric protection of hot jupiters. LOCATION:PLT CATEGORIES:Departmental Colloquium LAST-MODIFIED:20140926T081935Z ORGANIZER;CN=Ngan Dam: END:VEVENT END:VCALENDAR