The High Time Resolution Universe Survey - IX: Polarimetry of long-period pulsars

Abstract

We present a polarimetric analysis of 49 long-period pulsars discovered as part of the High Time Resolution Universe (HTRU) southern survey. The sources exhibit the typical characteristics of "old" pulsars, with low fractional linear and circular polarisation and narrow, multicomponent profiles. Although the position angle swings are generally complex, for two of the analysed pulsars (J1622-3751 and J1710-2616) we obtained an indication of the geometry via the rotating vector model. We were able to determine a value of the rotation measure (RM) for 34 of the sources which, when combined with their dispersion measures (DM), yields an integrated magnetic field strength along the line of sight. With the data presented here, the total number of values of RM associated to pulsars discovered during the HTRU southern survey sums to 51. The RMs are not consistent with the hypothesis of a counter-clockwise direction of the Galactic magnetic field within an annulus included between 4 and 6 kpc from the Galactic centre. A partial agreement with a counter-clockwise sense of the Galactic magnetic field within the spiral arms is however found in the area of the Carina-Sagittarius arm.

18 pages, 5 figures, 2 tables, accepted by MNRAS

References in corpus (9)

• PSRCHIVE and PSRFITS An Open Approach to Radio Pulsar Data Storage and Analysis
• Profile and polarization characteristics of energetic pulsars
• New pulsar rotation measures and the Galactic magnetic field
• An empirical model for the beams of radio pulsars
• Profile morphology and polarization of young pulsars
• An Interference Removal Technique for Radio Pulsar Searches
• Multi-frequency integrated profiles of pulsars
• The complex polarization angles of radio pulsars: orthogonal jumps and interstellar scattering
• The High Time Resolution Universe Pulsar Survey - VII: discovery of five millisecond pulsars and the different luminosity properties of binary and isolated recycled pulsars

Cited by in corpus (12)

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• A Fan Beam Model for Radio Pulsars. I. Observational Evidence
• Variability, polarimetry, and timing properties of single pulses from PSR J1713+0747 using the Large European Array for Pulsars
• The High Time Resolution Universe Pulsar Survey -- XVI. Discovery and timing of 40 pulsars from the southern Galactic plane
• HIPSR: A Digital Signal Processor for the Parkes 21-cm Multibeam Receiver
• Constraints from globular cluster pulsars on the magnetic field in the Galactic halo
• On frequency dependence of pulsar linear polarization
• Rotation measure variations in Galactic Centre pulsars
• A MeerKAT look at the polarization of 47 Tucanae pulsars: magnetic field implications
• Radio and gamma-ray timing of TRAPUM L-band Fermi pulsar survey discoveries
• Evidence for scattering of curvature radiation in radio pulsar profiles