Identification of radio and gamma-ray pulsars in X-rays using data from the SRG/eROSITA all-sky survey

TL;DR

This study utilized the eROSITA all-sky X-ray survey data to identify known radio and gamma-ray pulsars in the eastern sky, discovering new counterparts and providing insights into their X-ray properties, thereby enhancing pulsar catalogs.

Contribution

First to identify radio and gamma-ray pulsars in the eastern sky using eROSITA data, expanding the known X-ray pulsar population and providing preliminary spectral and flux estimates.

Findings

Identified new X-ray counterparts for 12 pulsars.

Detected 55 previously known X-ray pulsars in the eastern sky.

Approximately 12% of known pulsars are detected in X-rays with eROSITA.

Abstract

Using the data from the all-sky survey in soft X-rays performed by the eROSITA telescope onboard the Spectrum-Roentgen-Gamma observatory we identified known radio and $\gamma$-ray pulsars in the eastern half of the sky. As a result, new candidate counterparts were found for twelve pulsars of different ages and types at a $\gtrsim$ 3$\sigma$ confidence level. A comparable number had been previously identified in the western half of the sky. In total, this represents about 12\% of all known pulsars already detected in X-rays. For the new counterparts, we provide estimates of their X-ray fluxes, preliminary characteristics of their X-ray spectra, and brief descriptions of the pulsars' properties. In addition, in the eastern half of the sky eROSITA detected 55 pulsars previously identified in X-rays by other telescopes.