New Binary and Millisecond Pulsars from Arecibo Drift-Scan Searches

TL;DR

This paper reports the discovery of four recycled pulsars from Arecibo drift-scan searches, including isolated and binary systems, providing insights into neutron star formation and binary evolution.

Contribution

It presents new pulsar discoveries, including a potential disrupted binary remnant and a double neutron star system, expanding understanding of pulsar populations.

Findings

Discovery of four recycled pulsars with diverse properties

Identification of a possible disrupted binary neutron star remnant

Detection of a new double neutron star binary system

Abstract

We discuss four recycled pulsars found in Arecibo drift-scan searches. PSR J1944+0907 has a spin period of 5.2 ms and is isolated. The 5.8-ms pulsar J1453+19 may have a low-mass companion. We discuss these pulsars in the context of isolated millisecond pulsar formation and the minimum spin period of neutron stars. The isolated 56-ms pulsar J0609+2130 is possibly the remnant of a disrupted double neutron star binary. The 41-ms pulsar J1829+2456 is in a relativistic orbit. Its companion is most likely another neutron star, making this the eighth known double neutron star binary system.