ELFT HÍRADÓ

["Szokefalvi Nagy Zoltan" <szokefalvi-nagy.zoltan AT wigner.mta.hu>]

                                MEGHIVÓ


                           RMKI Szeminárium



                              Opitz Andrea
             IRAP (CNRS-UPS), University of Toulouse, France


                 "A napszél struktúrák és hatásuk a
                     bolygók plazmakörnyezetére"





                    2012. január 23. (hétfő), du. 2 óra
                KFKI RMKI III. épület 2. emeleti Tanácsterem








Előadás kivonat

We performed a detailed study of the temporal evolution and spatial
variation of the solar wind on different scales during the recent long
solar activity minimum. We use STEREO Ahead and Behind, Venus Express and
Mars Express in-situ plasma measurements to predict the solar wind
properties and structures at any heliospheric in-ecliptic positions. We
find that these predictions are valid at radial spacecraft separations as
far as the Mars and Venus orbits and even at 60 degrees longitudinal
separation due to the steadiness of the solar wind at this time. The
recent solar activity minimum was dominated by alternating fast and slow
solar wind
streams creating long-lived corotating interaction regions. We show the
effects of these solar wind structures on the plasma environment of the
magnetized Earth and the unmagnetized planet Mars.