Polarization Measurements of Arecibo-Sky Pulsars: Faraday Rotations and Emission-Beam Analyses

TL;DR

This paper reports new Faraday Rotation Measures and polarization profiles for 58 pulsars, including many in the inner Galaxy, to analyze their magnetic environments and emission-beam structures.

Contribution

It provides the first RM measurements for numerous pulsars and offers detailed polarization profiles, enhancing understanding of pulsar emission and interstellar magnetic fields.

Findings

New RM measurements for pulsars in the inner Galaxy.

Identification of interstellar-scattering effects in polarization profiles.

Morphological classifications of pulsar emission beams.

Abstract

We present Faraday Rotation Measure (RM) values derived at L- and P-band as well as some 60 Stokes-parameter profiles, both determined from our longstanding Arecibo dual-frequency pulsar polarimetry programs. Many of the RM measurements were carried out toward the inner Galaxy and the Anticenter on pulsars with no previous determination, while others are re-measurements intended to confirm or improve the accuracy of existing values. Stokes-parameter profiles are displayed for the 58 pulsars for which no meaningful Stokes profile at lower frequency is available and four without a high frequency pair. This is a population that includes many distant pulsars in the inner Galaxy. A number of these polarized pulse profiles exhibit clear interstellar-scattering tails; nonetheless, we have attempted to interpret the associated emission-beam structures and to provide morphological classifications and geometrical models where possible.