[Astronomy seminar] Reminder: Astronomy departmental seminar Friday May 31 at 10:30am - Oleg Kochukhov (Uppsala University)

[Astronomy seminar announcements]

Dear all,

This is a reminder of the weekly SU astronomy departmental seminar that will take place in about 59 minutes, at 10:30am in room FC61 (AlbaNova building, 6th floor) and on zoom (https://stockholmuniversity.zoom.us/j/62211269644?pwd=K0J2eVVMa3pTa1JVN2lyRUJPR3Rjdz09).

As usual, we encourage you to attend in person if possible.
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Speaker: Oleg Kochukhov (Uppsala University)
Title: Giant magnets in small stars. New insights into multi-scale nature of M-dwarf magnetic fields
Event: https://indico.fysik.su.se/e/oleg_kochukhov

Abstract: Magnetic fields play a fundamental role for the interior and atmospheric properties of M dwarfs and greatly influence terrestrial planets orbiting in the habitable zones of these low-mass stars. Determination of the strength and topology of magnetic fields, both on stellar surfaces and throughout the extended stellar magnetospheres, is a key ingredient for advancing stellar and planetary sciences. In this talk I will review magnetic field measurements applied to M dwarfs, with the emphasis on direct methods based on interpretation of the Zeeman effect signatures in high-resolution intensity and polarisation spectra. I will summarise results of the field strength measurements using Zeeman broadening studies as well as information on the global magnetic geometries inferred from spectropolarimetric observations. The emerging understanding of complex, multi-scale nature of M-dwarf magnetic fields will be discussed in the context of theoretical models of hydromagnetic dynamos and stellar interior structure altered by magnetic fields.

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We look forward to seeing many of you there. Thanks!

Adur and Adélaïde

Upcoming Events:

2024-06-07 **No seminar** (Klämdag)
2024-06-14 **No seminar** (PhD defense: Ivelin Georgiev)
2024-06-21 **No seminar** (Midsummer)

You can subscribe to the seminars calendar in:
https://ttt.astro.su.se/ical/astro-seminars.ics
(Please note that calendar can be subject to updates)
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Join Zoom Meeting:
https://stockholmuniversity.zoom.us/j/62211269644?pwd=K0J2eVVMa3pTa1JVN2lyRUJPR3Rjdz09
Meeting ID: 622 1126 9644

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