Computer Science
Scientific paper
Jan 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.547..375a&link_type=abstract
Proceedings of 'SOHO 13 - Waves, Oscillations and Small-Scale Transient Events in the Solar Atmosphere: A Joint View from SOHO a
Computer Science
3
Sun, Mhd, Synthetic Spectra, Funnel, Soho/Sumer
Scientific paper
Coronal funnels are open magnetic structures connecting the chromosphere with the solar corona [5, 3]. We investigate the stationary plasma flow out of funnels with a 2D- MHD model. The funnel area function is derived from a magnetic field model and the funnel is approximately 10 Mm high and 20 Mm wide. The energy balance includes radiative losses, thermal conduction, and a parametrized heating function. We adjust the parameters to the quantities measured in the lower solar corona. We obtained 2D plasma properties (e.g. density, temperature, flow speed, etc.) within the funnel. From the results of the MHD calculation we synthesize emision profiles of various lines formed in the transition region from the chromosphere to the corona. This allows us to study e.g. the Doppler shifts at various temperatures across the funnel and thus enables a detailed comparison of the model results with observations. For this we investigate SUMER data and study Doppler shifts perpendicular to the chromospheric network for different emission lines, where a tessalation technique is used to derive the outlines of the chromospheric network. In this paper typical results are presented for the Ne VIII(770.4 Å) line. Preliminary results show that these model caclulations compare well to the observations.
Aiouaz T.
Keppens Rony
Lemaire Philippe
Peter Hardi
No associations
LandOfFree
Dynamics and Properties of Coronal Funnels does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Dynamics and Properties of Coronal Funnels, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamics and Properties of Coronal Funnels will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1550477