A Model for Anisotropic Interstellar Scattering and its Application to Sgr A*

3 May 2018Dimitrios PsaltisMichael JohnsonRamesh NarayanLia MedeirosLindy BlackburnGeoff Bower

Scattering in the ionized interstellar medium is commonly observed to be anisotropic, with theories of magnetohydrodynamic (MHD) turbulence explaining the anisotropy through a preferred magnetic field direction throughout the scattering regions. In particular, the line of sight to the Galactic Center supermassive black hole, Sgr A*, exhibits strong and anisotropic scattering, which dominates its observed size at wavelengths of a few millimeters and longer... (read more)

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