# PSR J1926-0652: A Pulsar with Interesting Emission Properties Discovered at FAST

## TL;DR

This paper reports the discovery and detailed analysis of pulsar PSR J1926-0652 using FAST and Parkes telescopes, revealing complex emission behaviors such as nulling, subpulse drifting, and intermittency that challenge existing models.

## Contribution

It provides the first detailed characterization of PSR J1926-0652's emission properties, highlighting complex behaviors that question traditional pulsar emission models.

## Key findings

- Exhibits at least four profile components
- Displays short-term nulling from 4 to 450 pulses
- Shows complex subpulse drifting and intermittency

## Abstract

We describe PSR J1926-0652, a pulsar recently discovered with the Five-hundred-meter Aperture Spherical radio Telescope (FAST). Using sensitive single-pulse detections from FAST and long-term timing observations from the Parkes 64-m radio telescope, we probed phenomena on both long and short time scales. The FAST observations covered a wide frequency range from 270 to 800 MHz, enabling individual pulses to be studied in detail. The pulsar exhibits at least four profile components, short-term nulling lasting from 4 to 450 pulses, complex subpulse drifting behaviours and intermittency on scales of tens of minutes. While the average band spacing P3 is relatively constant across different bursts and components, significant variations in the separation of adjacent bands are seen, especially near the beginning and end of a burst. Band shapes and slopes are quite variable, especially for the trailing components and for the shorter bursts. We show that for each burst the last detectable pulse prior to emission ceasing has different properties compared to other pulses. These complexities pose challenges for the classic carousel-type models.