# Radio Observations of the Region around the Pulsar Wind Nebula HESS J1303-631 with ATCA

## TL;DR

This study used ATCA radio observations to search for a radio counterpart of the pulsar wind nebula HESS J1303-631, finding no significant emission but identifying a possible supernova remnant nearby.

## Contribution

First detailed radio observations of HESS J1303-631 region, providing constraints on its radio emission and identifying a potential supernova remnant as its birthplace.

## Key findings

- No significant radio emission detected from HESS J1303-631
- Archival data reveal a possible supernova remnant nearby
- Implications for the nature of the pulsar wind nebula

## Abstract

Radio observations of the region surrounding PSR J1301-6305 at 5.5 GHz and 7.5 GHz were conducted with ATCA on September 5th, 2013. They were dedicated to the search of the radio counterpart of the evolved pulsar wind nebula HESS J1303-631, detected in X-rays and GeV-TeV gamma-rays. The collected data do not reveal any significant extended emission associated with PSR J1301-6305. In addition, archival 1.384 GHz and 2.368 GHz data do not show any evidence for a radio counterpart of HESS J1303-631. Archival 1.384 GHz observations reveal a detection of an extended structure centred at an angular distance of 190 from the pulsar. This extended structure might be a Supernova remnant (SNR) and a potential birth place of PSR J1301-6305. The implications of the lack of radio counterpart of HESS J1303-631 on the understanding of the nature of the PWN are discussed.