No Pulsar Left Behind. I. Timing, Pulse-sequence Polarimetry, and Emission Morphology for 12 pulsars

TL;DR

This study characterizes twelve previously unstudied pulsars through timing, polarimetry, and emission analysis, revealing diverse emission behaviors and properties, including nulling, interpulses, and drifting subpulses, expanding understanding of pulsar emission mechanisms.

Contribution

The paper provides the first detailed timing and polarimetry data for twelve pulsars, including a candidate mildly recycled pulsar, highlighting their emission properties and morphological features.

Findings

Eleven pulsars are normal isolated pulsars with periods 0.22-2.65 s.

One pulsar, PSR J2053+1718, is a mildly recycled pulsar with a 119 ms period.

Several pulsars exhibit nulling, interpulses, and drifting subpulses.

Abstract

In this paper we study a set of twelve pulsars that previously had not been characterized. Our timing shows that eleven of them are "normal" isolated pulsars, with rotation periods between 0.22 and 2.65 s, characteristic ages between 0.25 Myr and 0.63 Gyr, and estimated magnetic fields ranging from 0.05 to 3.8x 10^{12} G. The youngest pulsar in our sample, PSR~J0627+0706, is located near the Monoceros supernova remnant (SNR G205.5+0.5), but it is not the pulsar most likely to be associated with it. We also confirmed the existence of a candidate from an early Arecibo survey, PSR~J2053+1718, its subsequent timing and polarimetry are also presented here. It is an isolated pulsar with a spin period of 119 ms, a relatively small magnetic field of 5.8x10^9 G and a characteristic age of 6.7 Gyr; this suggests the pulsar was mildly recycled by accretion from a companion star which became unbound when that companion became a supernova. We report the results of single-pulse and average Arecibo polarimetry at both 327 and 1400 MHz aimed at understanding the basic emission properties and beaming geometry of these pulsars. Three of them (PSRs~J0943+2253, J1935+1159 and J2050+1259) have strong nulls and sporadic radio emission, several others exhibit interpulses (PSRs J0627+0706 and J0927+2345) and one shows regular drifting subpulses (J1404+1159).