Není-li uvedeno jinak, konají se semináře v posluchárně profesora Viléma Kunzla na KFPP (konz. míst. KFPP – m.č. A042) v budově MFF UK v Troji. Změny programu vyhrazeny.
Všichni zájemci z řad studentů, postgraduálních studentů, zaměstnanců fakulty i mimofakultní odborné veřejnosti jsou srdečně zváni!
Program minulých seminářů: 1996/1997, 1997/1998, 1998/1999, 1999/2000, 2000/2001, 2001/2002, 2002/2003, 2003/2004, 2004/2005, 2005/2006, 2006/2007, 2007/2008, 2008/2009, 2009/2010, 2010/2011, 2011/2012, 2012/2013, 2013/2014, 2014/2015, 2015/2016, 2016/2017, 2017/2018, 2018/2019, 2019/2020, 2020/2021, 2021/2022, 2022/2023, 2023/2024, 2024/2025, 2025/2026, 2026/2027.
Investigations of the dynamic boundary between the solar wind and Earth's magnetic field — in English
Přednášející: Dr. Niklas Grimmich, Institute of Atmospheric Physics, Czech Academy of Sciences, Prague, and Imperial College London, London, UK
Místo konání: v posluchárně prof. Kunzla (A042, konz. míst. KFPP)
Anotace:
The planetary magnetic field surrounds the Earth like an invisible shield. It forms a barrier to the stream of high-energy particles emanating from the Sun, known as solar wind. Like a river flowing around a rock, the solar wind is slowed down and diverted around the Earth’s magnetic field in the magnetosheath. The boundary between this flow region and the sphere of influence of the planetary magnetic field, called the magnetosphere, is the magnetopause. Satellite observations and simulations can be used to model the shape and location of the boundary, as well as its reaction to the solar wind. For this purpose, empirical formulations are most used in a quasi-static situation. In many cases, models correctly predict the location of the magnetopause with an expected degree of uncertainty. However, large deviations of a few Earth radii between the predicted and actual observed locations are not uncommon, significantly exceeding this degree of uncertainty. This highlights the need for further investigation of the boundary. With the new Solar Wind Ionosphere Link Explorer, we can gain new insights into its location and dynamics.