1 / 12

...a case in point?

...a case in point?. use of the SST, numerical simulations, and ひので in modelling dynamic fibrils, spicules, and mottles. Romforskningsutvalget ved ITA 20-mars 2007. H-alpha core 4-oct-2005. Taken at the SST by Luc Rouppe van der Voort and Michiel van Noort.

jenaya
Download Presentation

...a case in point?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. ...a case in point? • use of the SST, numerical simulations, and ひので in modelling dynamic fibrils, spicules, and mottles Romforskningsutvalget ved ITA 20-mars 2007

  2. H-alpha core 4-oct-2005 • Taken at the SST by Luc Rouppe van der Voort and Michiel van Noort Diffraction limited (0.2”), Ha linecenter at 1 s cadence, from 8:50 to 10:10 UT, m=0.78 (S8, E37)

  3. Dynamic Fibrils Evolution

  4. 3d Oslo Stagger Code; 5th order spatial interpolation, 3d order time stepping Non-grey radiative transfer w/ scattering the chromosphere; optically thin radiation in lower transition region and corona Thermal conduction along magnetic field Transmitting boundaries; allow control of entropy and magnetic field configuration that enters the computational box from below 3d MHD simulations

  5. Simulated Dynamic Fibrils Hansteen, De Pontieu et al. 2006 ApJL 647, L73-L76 De Pontieu, Hansteen et al. 2007 ApJ 655, 624-641

  6. Simulations Observations vs. Simulations xt-plots Observations • Spicule-like features in simulations - due upwardly propagating shocks -show parabolic paths similar to those observed in DFs, as well as a host of other similarities...

  7. Rouppe van der Voort et al. 2007 ApJL, in press Observations vs. Simulations velocity/deceleration • The correlation between maximum velocity along a DF and the deceleration is well reproduced by simulations. It is a consequence of the shock acceleration of dynamic fibrils.

  8. ひので（Hinode) • Japan/US/UK mission (Norway, ESA) • Downlink at Svalbard • Quick Look Software • European Data Center in Oslo Launch September 23, 2006

  9. EIS observations of the upper atmosphere

  10. ... and indeed spicules at the limb SOT observations Ca H show many dynamic phenomena...

  11. Oslo Stagger Code simulation of SOT Ca H at the limb ...simulation to be shown at NASA’s Hinode press conference tomorrow March 21, 2007.

  12. combination of simulation and observation is a very powerful tool • ground based and space based methods are complimentary • access to and expertise in all three methods has allowed the solar group at ITA to be a leader in the field

More Related