Measurements of the scattering of pulsars radio emission. Statistical uniformity of large-scale plasma turbulence in the near Galaxy

摘要

We report the low frequency measurements of the scatter pulse broadening sc for a large sample of 100 pulsars in a vast Galaxy region of galactic longitudes from 6° to 311° and distances up to 3 kpc. Analysis of sc dependencies on the frequency, dispersion measure, distance and Galactic longitude have been done. The scatter to frequency dependence can be presented by the power-low relation sc() - with =4.1±0.3. Up to a distance of 3 kpc the scatter to dispersion measure dependence can be presented by the power-low relation sc(DM) DM2.2±0.1. The turbulence level is nearly identical in various directions and distances of the near Galaxy, testifying to the statistical homogeneity of a large-scale plasma turbulence in this Galaxy region.