Seminars at MPS

Interested visitors are very welcome to join in all seminars held and talks given at the MPS. The presentations are mainly given in English. More detailed information can be found at the seminars' pages. Invited guest scientists of other institutes report on the successes and results of their research in institute seminars and colloquia. PhD students of the International Max Planck Research School (IMPRS) present their work in S3 seminars. In the Seminars about Planets and Comets, as well as in the Seminars about the Sun and sunlike Stars, the scientists of the respective departments report on the latest results and progress made in their projects and introduce new missions. All seminars are concluded with a short discussion or a questions-and-answers sessions.
Room: Lecture Hall

MPS Seminar: On the Origin of the Photospheric Magnetic Field (M. Linton)

  • Date: May 16, 2024
  • Time: 02:00 PM - 03:00 PM (Local Time Germany)
  • Speaker: Mark Linton
  • Mark Linton (NRL), in collaboration with Peter Schuck (NASA/GSFC), Kalman Knizhnik (NRL), and James Leake (NASA/GSFC)
  • Location: MPS
  • Room: Lecture Hall
  • Host: Gherardo Valori
We present a new mathematically rigorous analysis tool (Schuck et al. 2022), based on Gauss' 1839 method for analyzing terrestrial magnetic fields, that extracts attribution from photospheric vector magnetogram observations and answers the question ``what is the source of the photospheric magnetic field, the convection zone or corona?'' We apply this powerful 19th-century method to SDO/HMI observations of NOAA AR 12673 to disentangle the photospheric magnetic field produced by these two source regions. This allows us to generate paired photospheric vector magnetograms for the fields produced by coronal sources and for fields produced by convection zone sources. From these analyses, we demonstrate that bare current channels are supported by the solar corona and that these coronal current channels can be a significant source of the radial component of the magnetic field in the photosphere. [more]

MPS Seminar: Exoplanets, cool stars, and their interactions (Katja Poppenhäger)

  • Date: May 22, 2024
  • Time: 02:00 PM - 03:00 PM (Local Time Germany)
  • Speaker: Katja Poppenhäger
  • Leibniz Institute for Astrophysics Potsdam (AIP), Section "Stellar Physics and Exoplanets"
  • Location: MPS
  • Room: Lecture Hall
  • Host: Sami Solanki
Katja Poppenhaeger is the leader of the research section on "Stellar Physics and Exoplanets" at AIP and a professor at the University of Potsdam. She investigates exoplanets and their atmospheres, particularly in the environment created by their host stars through irradiation and magnetic effects. Her group uses both observations in several wavelength regimes as well as numerical simulations to increase our understanding of exoplanets and their host stars. [more]
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