The determination of coronal potential magnetic fields using line-of-sight boundary conditions

✍ Scribed by T. J. Bogdan

• Publisher: Springer
• Year: 1986
• Tongue: English
• Weight: 267 KB
• Volume: 103
• Category: Article
• ISSN: 0038-0938
• DOI: 10.1007/bf00147832

✦ Synopsis

Previous efforts to construct solar coronal fields using surface magnetograph data have generally employed a least squares minimization technique in order to determine the spherical harmonic expansion coefficients of the magnetic scalar potential. Provided there is no source surface high up in the corona, we show that knowledge of the line-of-sight component of the surface magnetic field, B t = B r sin 0 + B o cos 0, is sufficient to uniquely determine the potential coronal magnetic field by an explicit construction of the magnetic scalar potential for an arbitrary Bt(O, (~).