The stationary phase point method for transitional scattering: diffractive radio scintillation for pulsar
Abstract
The stationary phase point (SPP) method in one-dimensional case is introduced to treat the diffractive scintillation. From weak scattering, where the SPP number N=1, to strong scattering (N1), via transitional scattering regime (N2,3), we find that the modulation index of intensity experiences the monotonically increasing from 0 to 1 with the scattering strength, characterized by the ratio of Fresnel scale to diffractive scale .
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