Astrophysics equation
Chandrasekhar–Fermi method or CF method or Davis–Chandrasekhar–Fermi method is a method that is used to calculate the mean strength of the interstellar magnetic field that is projected on the plane of the sky. The method was described by Leverett Davis Jr in 1951 and independently by Subrahmanyan Chandrasekhar and Enrico Fermi in 1953. According to this method, the magnetic field formula_1 in the plane of the sky is given by
formula_2
where formula_3 is the mass density, formula_4 is the line-of-sight velocity dispersion and formula_5 is the dispersion of polarization angles and formula_6 is an order unity factor, which is typically taken it to be formula_7. The method is also employed for prestellar molecular clouds.
References.
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