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Seminare am MPS

ESPOS

16081 1542019378

ESP Online Seminar: Asymmetric Solar Waveguides: Theory and Observations (M. Allcock )

Are solar MHD waveguides symmetric? It is convenient to assume that they are. The solar physics community is familiar with the traditional notion of sausage and kink waves, which propagate along waveguides in the solar atmosphere that we assume are symmetric. In this talk, we drop this assumption and motivate the study of MHD wave propagation in asymmetric waveguides from theoretical and observational viewpoints. We discuss the implications that asymmetric waveguides have for mode identification, highlighting the observational ambiguity between waves in symmetric and asymmetric waveguides, which becomes a crucial consideration when implementing magneto-seismology diagnostics. We present a novel technique for solar magneto-seismology that utilises the observed asymmetry of MHD waves to diagnose background parameters of the solar atmosphere that are difficult to measure using traditional methods. We present a preliminary application of this technique to chromospheric fibrils as a proof-of-concept and discuss the potential further application to prominences, elongated magnetic bright points, and sunspot light walls. [mehr]

public

15235 1536592687

Sehnsuchtsplanet Mars: Veranstaltung zur Landung der Marsmission InSight; Kurzanleitung für eine Landung auf dem Mars (R. Lindner)

[mehr]

15380 1537865835

S3 Seminar: High-cadence observations of the quiet Sun with MiHI

[mehr]

public

15525 1537865884

S3 Seminar: Coronal loop heating

[mehr]

15526 1537865898

S3 Seminar: Numerical Simulations of Solar Convection using a Local Box Model

[mehr]

15383 1537865912

S3 Seminar: The effect of inclination on solar brightness variations

[mehr]

15384 1537865929

S3 Seminar: Inversions of straylight-corrected slit spectra

[mehr]

15385 1537865943

S3 Seminar: The distribution of volatiles in the lunar interior

[mehr]

15389 1537865959

S3 Seminar: Layerings in cometary nuclei

[mehr]

15390 1537865974

S3 Seminar: Long-time solar and stellar 3-D convection simulations

[mehr]

15386 1537865987

S3 Seminar: Exploring the depth dependence of solar equatorial Rossby waves

[mehr]

 
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