[Astronomy seminar] Astronomy Department Seminar - 12th of November Ana Belen Grinon Marin

[Astronomy seminar announcements]

Hej all,

On Friday the 12th of November, we have the next astronomy seminar with Ana Belen Grinon Marin (University of Oslo) speaking at 10:30 via Zoom:

Learning about sunspot magnetism and evolution through light-bridges


The closeness of the Sun allows us the most detailed analysis of the various physical phenomena that take place in stars (solar-like at least). One of the most intriguing aspects of the Sun's behaviour is its magnetism, the interaction of the magnetic field with the solar plasma, as well as its role in the connectivity throughout the heliosphere. The presence of magnetic fields reveals itself in different structures, one of which are the sunspots.

In recent years, our understanding of the formation and evolution of sunspots has improved thanks to, among other things, the advent of spectropolarimetric observations and/or high temporal, spatial, and/or spectral resolution, but there are still many questions to be answered. One important feature of some sunspots is the presence of light bridges. They play an important role in the evolution of those sunspots that develop them. They are irregular, bright, and elongated structures that are seen in umbra during the formation and/or decay of sunspots or pores.

In this talk, I will present the results of long-term evolution of different atmospheric parameters of three light bridges formed in the same host sunspot by different mechanisms.

Best,
Chris and Tine


Tine Libbrecht is inviting you to a scheduled Zoom meeting.

Topic: Learning about sunspot magnetism and evolution through light-bridges
Time: Nov 12, 2021 10:30 AM Stockholm

Join Zoom Meeting
https://stockholmuniversity.zoom.us/j/66563404256?pwd=NytETjUzUTJxKzN1ckp6OHIyNy9DZz09

Meeting ID: 665 6340 4256
Passcode: 035087


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