Nonradial Coronal Streamers
Abstract
The appearance of white light streamers in the outer solar corona is simulated by applying simple extrapolation models to the photospheric magnetic field and taking line-of-sight electron scattering into account. Highly nonradial streamers are obtained when the electrical currents are confined to thin sheets and the photospheric field contains a strong quadrupole (or higher order multipole) component, in addition to the normally dominant dipole. The finite angular resolution of the simulations gives rise to faint, multiple raylike structures or striations, which may mimic the effect of density inhomogeneities in the heliospheric current sheet.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- January 1996
- DOI:
- 10.1086/309871
- Bibcode:
- 1996ApJ...456L.119W
- Keywords:
-
- INTERPLANETARY MEDIUM;
- SUN: SOLAR WIND;
- SUN: ACTIVITY;
- SUN: CORONA;
- SUN: MAGNETIC FIELDS