通知公告

奥地利科学院Martin Volwerk和Daniel Schmid研究员学术报告通知

发布者:金美花发布时间:2025-08-19浏览次数:10

应物理学院黄楷和唐桧波老师邀请,奥地利科学院Martin VolwerkDaniel Schmid研究员近日来我校进行讲学活动。

 

报告题目:Temperature Anisotropy Plasma Instabilities

报告时间:20258月22日(星期五)上午9:30-1030

报告地点:理学楼822

报告人简介Dr. Martin Volwerk, Senior Academy Scientist at the Space Research Institute of the Austrian Academy of Sciences. Associate editor for Frontiers in Astronomy and Space Sciences - Space Physics. Co-Investigator of the Magnetometers of Double Star, Venus Express, BepiColombo, and JUICE projects. His research interests include Ultra Low Frequency (ULF) waves in planetary magnetospheres and in the solar wind, global effects and magnetospheric dynamics induced by solar wind structures and magnetotail dynamics, cometary plasma physics, and magnetic holes and mirror modes in the solar wind and around Venus and Mars.

报告摘要Non-Maxwellian distributions can drive plasma instabilities. In the neighbourhood of planets, the interaction between the solar wind and an extended exosphere, can lead to pick-up of freshly ionized particles, which will introduce an anisotropy in the solar wind plasma. The ions start to gyrate around the magnetic field lines and thereby create a ring-beam distribution, with a temperature perpendicular to the magnetic field larger than along the magnetic field. This can drive 2 instabilities, the ion cyclotron and the mirror mode instability. We will look at the presence of these modes in different planetary environments.

 

报告题目:BepiColmobo

报告时间:20258月22日(星期五)上午1030-1130

报告地点:理学楼822

报告人Dr. Daniel Schmid, Senior Academy Scientist at Space Plasma Group, Space Research Institute (IWF) Graz, Austrian Academy of Sciences. Chair of BepiColombo Young Scientist Study Group (YSSG). Co-Investigator of ESA BepiColmobo: MGF magnetometer and ESA M-MATISSE (Phase-A): M-MSA mass spectrometer. Guest Editor in Earth Planets and Space. His research interests include planetary space (plasma) environment of Mercury, Venus, Comets and Earth, magnetometer in-flight calibration methods, magnetic structures in the solar wind.

报告摘要:BepiColombo is an international mission comprised of two spacecraft riding together to Mercury to orbit and to study the planet from unique vantage points. The Mercury Planetary Orbiter (MPO) provided by European Space Agency (ESA) will study the planet's surface and interior. The Mercury Magnetospheric Orbiter (MIO) supplied by Japan Aerospace Exploration Agency (JAXA) will study the planet's magnetic field. This talk will introduce the scientific objectives, payloads, and recent progresses of BepiColombo.