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Solar Physics & upper-Atmosphere Research Group University of Sheffield Linear and non-linear waves and oscillations L1: Examples for waves Robert von.

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Presentation on theme: "Solar Physics & upper-Atmosphere Research Group University of Sheffield Linear and non-linear waves and oscillations L1: Examples for waves Robert von."— Presentation transcript:

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2 Solar Physics & upper-Atmosphere Research Group University of Sheffield Linear and non-linear waves and oscillations L1: Examples for waves Robert von Fáy-Siebenbürgen Robertus@sheffield.ac.uk SPARG, Department of Applied Mathematics, The University of Sheffield (UK) http://www.shef.ac.uk/~robertus

3 Solar Physics & upper-Atmosphere Research Group http://www.shef.ac.uk/~robertusKULUniversity of Sheffield Water waves

4 Solar Physics & upper-Atmosphere Research Group http://www.shef.ac.uk/~robertusKULUniversity of Sheffield Water waves

5 Solar Physics & upper-Atmosphere Research Group http://www.shef.ac.uk/~robertusKULUniversity of Sheffield Longitudinal waves

6 Solar Physics & upper-Atmosphere Research Group http://www.shef.ac.uk/~robertusKULUniversity of Sheffield Transverse waves

7 Solar Physics & upper-Atmosphere Research Group http://www.shef.ac.uk/~robertusKULUniversity of Sheffield Shock waves

8 Solar Physics & upper-Atmosphere Research Group http://www.shef.ac.uk/~robertusKULUniversity of Sheffield Sonic boom

9 Solar Physics & upper-Atmosphere Research Group http://www.shef.ac.uk/~robertusKULUniversity of Sheffield The dynamic Sun Movie: SOHO/EIT (ESA/NASA)

10 Solar Physics & upper-Atmosphere Research Group http://www.shef.ac.uk/~robertusKULUniversity of Sheffield Helioseismology ¤ more than 100,000 pulsation modes ¤ single mode ¤ three modes ¤ many modes

11 Solar Physics & upper-Atmosphere Research Group http://www.shef.ac.uk/~robertusKULUniversity of Sheffield ¤ n=14 (radial nodes) ¤ m=16 (poloidal nodes) ¤ l=20 (spherical harmonic degree) ¤ The frequency of this mode determined from the MDI data is 2935.88  0.2 µHz. Helioseismology

12 Solar Physics & upper-Atmosphere Research Group http://www.shef.ac.uk/~robertusKULUniversity of Sheffield Helioseismology

13 Solar Physics & upper-Atmosphere Research Group http://www.shef.ac.uk/~robertusKULUniversity of Sheffield Photosphere: sunspots

14 Solar Physics & upper-Atmosphere Research Group http://www.shef.ac.uk/~robertusKULUniversity of Sheffield Running penumbral waves

15 Solar Physics & upper-Atmosphere Research Group http://www.shef.ac.uk/~robertusKULUniversity of Sheffield Solar storms: Sun quakes Solar quakes: high energy electrons slam the solar surface

16 Solar Physics & upper-Atmosphere Research Group http://www.shef.ac.uk/~robertusKULUniversity of Sheffield Solar quakes: high energy electrons slam the solar surface Solar storms: Sun quakes

17 Solar Physics & upper-Atmosphere Research Group http://www.shef.ac.uk/~robertusKULUniversity of Sheffield Chromospheric spicules spicules

18 Solar Physics & upper-Atmosphere Research Group http://www.shef.ac.uk/~robertusKULUniversity of Sheffield Solar spicules (tornadoes) (BBSO) Earth Peter & von der Lühe (1999)

19 Solar Physics & upper-Atmosphere Research Group http://www.shef.ac.uk/~robertusKULUniversity of Sheffield Solar spicules (tornadoes)

20 Solar Physics & upper-Atmosphere Research Group http://www.shef.ac.uk/~robertusKULUniversity of Sheffield Moreton waves

21 Solar Physics & upper-Atmosphere Research Group http://www.shef.ac.uk/~robertusKULUniversity of Sheffield Coronal loops

22 Solar Physics & upper-Atmosphere Research Group http://www.shef.ac.uk/~robertusKULUniversity of Sheffield Coronal loops by TRACE

23 Solar Physics & upper-Atmosphere Research Group http://www.shef.ac.uk/~robertusKULUniversity of Sheffield SOHO/TRACE examples Solar atmospheric oscillations

24 Solar Physics & upper-Atmosphere Research Group http://www.shef.ac.uk/~robertusKULUniversity of Sheffield TRACE: Loop oscillation excited by M4.6 flare (14 July 1998) Movie in TRACE 171 A Solar atmospheric oscillations

25 Solar Physics & upper-Atmosphere Research Group http://www.shef.ac.uk/~robertusKULUniversity of Sheffield Surfing magnetic loops Difference image in brightness out from the loop base

26 Solar Physics & upper-Atmosphere Research Group http://www.shef.ac.uk/~robertusKULUniversity of Sheffield Space Weather

27 Solar Physics & upper-Atmosphere Research Group http://www.shef.ac.uk/~robertusKULUniversity of Sheffield The end

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