On practical representation of magnetic field

✍ Scribed by Y. Nakagawa; M. A. Raadu

• Book ID: 104646718
• Publisher: Springer
• Year: 1972
• Tongue: English
• Weight: 584 KB
• Volume: 25
• Category: Article
• ISSN: 0038-0938
• DOI: 10.1007/bf00155751

✦ Synopsis

Various manners of determination of a magnetic field are reviewed briefly from the standpoint of practicality and uniqueness. Then a practical representation of magnetic fields in terms of a class of force-free magnetic field is described. The proposed scheme is based on the physical consideration that in the chromosphere and lower corona a quasistatic magnetic field must be nearly force-free and that for the class of force-free magnetic field, i.e., V • B=c~B with c~=constant, the magnetic field can be determined uniquely from the observed dis tribution of the vertical component of a magnetic field. The applicability ,of the representation is demonstrated by examples and the limitations are discussed.