Recovering the pulse profiles and polarization position angles of some pulsars from interstellar scattering

Abstract

Interstellar scattering causes broadening and distortion in the mean pulse profiles and polarization position angle (PPA) curves of pulsars, especially pulse profiles observed at lower frequencies. This paper implements a method to recover the pulse profiles and PPA curves of five pulsars which have obvious scattered pulse profiles at lower frequency. It reports a simulation to show the scattering and descattering of pulse profiles and PPA curves, and as a practical application the lower frequency profiles and PPA curves of PSR 1356−60, PSR 1831−03, PSR 1838+04, PSR 1859+03 and PSR 1946+35 are obtained. It is found that the original pulse profiles and PPA curves can be recovered.