The Role of "Magnetic Dips" and "Bald Patches" for a Filament Observed by SOHO and GBO

Details The Role of "Magnetic Dips" and "Bald Patches" for a Filament Observed by SOHO and GBO The Role of "Magnetic Dips" and "Bald Patches" for a Filament Observed by SOHO and GBO

Sep 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aspc..184..291a&link_type=abstract

Third Advances in Solar Physics Euroconference: Magnetic Fields and Oscillations, ASP Conference Series vol.184, p. 291-295. Eds

Physics

1

Scientific paper

The studied filament was observed on Sept. 25, 1996, in Hα with the MSDP on the German VTT, Tenerife, as well as in Si IV with SOHO/SUMER. The 3-D magnetic configuration of the filament channel is reconstructed, using linear magnetohydrostatic (lmhs) extrapolations from a SOHO/MDI magnetogram, which is modified by a background magnetic component constraining a twisted flux-tube. This flux-tube is deformed by the magnetic polarities observed with SOHO/MDI. The shape and location of the computed "dipped field lines" are in good agreement with the shape of the filament and its feet observed in Hα. Some "bald patches" (BPs) are present where the distribution of dips reaches the photosphere. We find observational signatures in Si IV brightenings of energy release at the locations of computed "bald patch separatrices", defined by field lines which are tangent to the photosphere. We propose that the plasma is there heated by ohmic dissipation from the expected currents in the BP separatrices. The results show the importance of "dipped field lines" and "bald patches" in filament channels.

Affiliated with

Also associated with

No associations

Rating

The Role of "Magnetic Dips" and "Bald Patches" for a Filament Observed by SOHO and GBO 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 The Role of "Magnetic Dips" and "Bald Patches" for a Filament Observed by SOHO and GBO, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Role of "Magnetic Dips" and "Bald Patches" for a Filament Observed by SOHO and GBO will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1769782