Discovery of Four Pulsars in a Pilot Survey at Intermediate Galactic Latitudes with FAST

Abstract

We present the discovery and timing results of four pulsars discovered in a pilot survey at intermediate Galactic latitudes with the Five-hundred Aperture Spherical Telescope (FAST). Among these pulsars, two belong to the category of millisecond pulsars (MSPs) with spin periods of less than 20 ms. The other two fall under the classification of “mildly recycled” pulsars, with massive white dwarfs as companions. Remarkably, this small survey, covering an area of 4.7 deg2, led to the discovery of four recycled pulsars. Such success underscores the immense potential of future surveys at intermediate Galactic latitudes. In order to assess the potential yield of MSPs, we conducted population simulations and found that both FAST and Parkes new phased array feed surveys, focusing on intermediate Galactic latitudes, have the capacity to uncover several hundred new MSPs.

Investigating the Unique Drift Behavior of PSR B2110+27 with FAST

“…As the number of discovered pulsars continues to rise since their first discovery (Hewish et al 1968), advancements in high-sensitivity telescopes have opened avenues for expanding pulsar populations (e.g., Dai et al 2020;Han et al 2021;Zhi et al 2024) and uncovering fascinating phenomena (e.g., Zhi et al 2023b;Chen et al 2023;Zhang et al 2023). This progress has also provided opportunities for in-depth investigations into single pulse features.…”