Singular points of the polarization tensor |
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| Authors: | M M Molodensky L I Starkova |
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| Institution: | (1) IZMIRAN, 142092 Troitsk, Moscow Region, Russia |
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| Abstract: | The problem to compute the magnetic field above the chromosphere using data of the vector  = B
t/Bt that gives the projected field direction can be solved with different approximations. The field of direction vectors is, however, not the only field accessible to observations. The Stokes parameters, which are components of the radiation tensor, can be measured at each point of the image plane. The directions of the eigenvectors of the radiation tensor define two mutually orthogonal systems of integral curves in the image plane. These families of curves have singular points, which are generally of different type than those of the vector field. When the morphology of H chromospheric fibrils are used to infer the topology of the magnetic field, a similar problem is met, suggesting that singular points should also be present there. |
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| Keywords: | Polarization Fibrils Chromosphere Crab Nebula Solar Eclipse Singular Points |
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