Magnetic fields in quiescent prominences

Abstract

view Abstract Citations (96) References (29) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Magnetic Fields in Quiescent Prominences van Ballegooijen, A. A. ; Martens, P. C. H. Abstract The origin of the axial fields in high-latitude quiescent prominences is considered. The fact that almost all quiescent prominences obey the same hemisphere-dependent rule strongly suggests that the solar differential rotation plays an important role in producing the axial fields. However, the observations are inconsistent with the hypothesis that the axial fields are produced by differential rotation acting on an existing coronal magnetic field. Several possible explanations for this discrepancy are considered. The possibility that the sign of the axial field depends on the topology of the magnetic field in which the prominence is embedded is examined, as is the possibility that the neutral line is tilted with respect to the east-west direction, so that differential rotation causes the neutral line also to rotate with time. The possibility that the axial fields of quiescent prominences have their origin below the solar surface is also considered. Publication: The Astrophysical Journal Pub Date: September 1990 DOI: 10.1086/169193 Bibcode: 1990ApJ...361..283V Keywords: Magnetohydrodynamics; Solar Corona; Solar Magnetic Field; Solar Prominences; Astronomical Models; Photosphere; Solar Flux; Solar Rotation; Solar Physics; HYDROMAGNETICS; SUN: CORONA; SUN: PROMINENCES full text sources ADS |