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Dear all,<br>
<br>
The next SU astronomy departmental seminar (the last one before the
summer break) will take place on Friday, May 31 at 10:30am in room
FC61 (AlbaNova building, 6th floor) and on zoom (<a
href="https://stockholmuniversity.zoom.us/j/62211269644?pwd=K0J2eVVMa3pTa1JVN2lyRUJPR3Rjdz09"
class="moz-txt-link-freetext">https://stockholmuniversity.zoom.us/j/62211269644?pwd=K0J2eVVMa3pTa1JVN2lyRUJPR3Rjdz09</a>).<br>
___________________<br>
<br>
Speaker: Oleg Kochukhov (Uppsala University)<br>
Title: Giant magnets in small stars. New insights into multi-scale
nature of M-dwarf magnetic fields<br>
Event: <a href="https://indico.fysik.su.se/e/oleg_kochukhov"
class="js-copy-to-clipboard moz-txt-link-freetext"
data-clipboard-text="https://indico.fysik.su.se/e/oleg_kochukhov"
data-clipboard-action="copy"
data-qtip-oldtitle="Copy link to clipboard">https://indico.fysik.su.se/e/oleg_kochukhov
</a><br>
<br>
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.<br>
<br>
___________________<br>
<br>
We look forward to seeing many of you there. Thanks!<br>
<br>
Adur and Adélaïde<br>
<br>
Upcoming Events:<br>
<br>
2024-06-07 **No seminar** (Klämdag)<br>
2024-06-14 **No seminar** (PhD defense: Ivelin Georgiev)<br>
2024-06-21 **No seminar** (Midsummer)<br>
<br>
You can subscribe to the seminars calendar in:<br>
<a href="https://ttt.astro.su.se/ical/astro-seminars.ics"
class="moz-txt-link-freetext">https://ttt.astro.su.se/ical/astro-seminars.ics</a><br>
(Please note that calendar can be subject to updates)<br>
___________________<br>
<br>
Join Zoom Meeting:<br>
<a
href="https://stockholmuniversity.zoom.us/j/62211269644?pwd=K0J2eVVMa3pTa1JVN2lyRUJPR3Rjdz09"
class="moz-txt-link-freetext">https://stockholmuniversity.zoom.us/j/62211269644?pwd=K0J2eVVMa3pTa1JVN2lyRUJPR3Rjdz09</a><br>
Meeting ID: 622 1126 9644
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