[Astronomy seminar] Astronomy departmental seminar December 06 at 10:30am - Dr Andrii Sukhorukov (Stockholm University)

[Astronomy seminar announcements]

Dear All

This is a gentle reminder of the Astronomy seminar series happening in FC 61 at 10:30 AM.

Thanks and Regards
Anjasha and Mingjie

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From: Alla-at-astro.su.se <alla-at-astro.su.se-bounces at lists.su.se> on behalf of Anjasha Gangopadhyay via Alla-at-astro.su.se <alla-at-astro.su.se at lists.su.se>
Sent: Monday, December 2, 2024 3:24:57 PM
To: seminars-announce.astro-at-su.se at lists.su.se <seminars-announce.astro-at-su.se at lists.su.se>; alla at astro.su.se <alla at astro.su.se>
Subject: [alla at astro.su.se] Astronomy departmental seminar December 06 at 10:30am - Dr Andrii Sukhorukov (Stockholm University)


Dear all,

The next weekly SU astronomy departmental seminar will take place the upcoming Friday December 06, at 10:30am in room FC61 (AlbaNova building, 6th floor) and on zoom(https://stockholmuniversity.zoom.us/j/61550693125).

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Speaker:  Dr Andrii Sukhorukov (Stockholm University)
Title:  Scattering Polarization in the Wings of Solar Mg II k&h Lines near 280 nm
Event: https://indico.fysik.su.se/event/8962/

Abstract:

The CLASP2 rocket experiment was performed on April 11, 2019. It is observed the solar chromosphere in the Mg II resonant doublet near 280 nm for three targets: the quiet Sun at the disk center, at the limb, and an active plage at midway. Slit spectra in all four Stokes parameters were obtained in the UV. The limb target revealed profile shapes for the linear polarization caused by quantum interference in the upper term  2Po. This confirmed the theoretical prediction of Stenflo (1980), recently thoroughly investigated by Belluzzi and Trujillo Bueno (2012). We have developed two numerical modules for the PORTA radiative transfer code to interpret these data through forward modeling. We have solved the transfer problem numerically, including the effects of 3D geometry, partial redistribution of scattered photons, and quantum interference in a two-term atom. In this talk, I will describe the observational experiment, the theoretical method's complexity, computational demands, and approximations, show synthetic data, and discuss the importance of various effects, from spatial symmetry breaking to quantum interference.

Zoom ID: 615 5069 3125

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

Anjasha and Mingjie

Upcoming Events

  *   Dec 18  Eric Andersson (Join Nordita & SU Astronomy Seminar)
  *



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/61550693125

Meeting ID: 615 5069 3125


** Just a small note for the people who prefer slack in OKC, we have created a channel here - https://join.slack.com/share/enQtNzY4MzA3MjEzNDA1NC05M2NiY2UzOGRiZjY0YTFhZDZjMzA1ZjkwZjJjYTBiM2JhNzExOGVmMDlkYTBkNjMxMmY3ZTdiY2UzNjcxNzk3

We will be posting updates there as well.
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