The Effect of Scattering on Pulsar Polarization Angle

Abstract

The low-frequency profiles of some pulsars manifest temporal broadening due to scattering, usually accompanied by flat polarization position angle (PA) curves. Assuming that the scattering works on the 4 Stokes parameters in the same way, we have simulated the effect of scattering on polarization profiles and find that the scattering can indeed flatten the PA curves. Since the higher-frequency profiles suffer less from scattering, they are convolved with scattering models to fit the observed low-frequency profiles. The calculated flat PA curves exactly reproduce the corresponding observations.

4 pages. Accepted by A&A

References in corpus (6)

• A CLEAN-based Method for Deconvolving Interstellar Pulse Broadening from Radio Pulses
• Polarization Properties of Nine Southern Radio Pulsars
• A flexible format for exchanging pulsar data
• Scatter broadening of pulsars in the direction of the Gum nebula
• Circular Polarization Induced by Scintillation in a Magnetized Medium
• Possible evidence for the pulsed X-ray emission from outer gap in PSR B1937+21?

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