A search for pulsed radio emission from anomalous X-ray pulsar 4U 0142+61 at the frequency of 111 MHz

TL;DR

This study conducted a search for pulsed radio emission from the magnetar 4U 0142+61 at 111 MHz but did not detect any signals, establishing upper limits on its flux density.

Contribution

First radio search for 4U 0142+61 at 111 MHz setting upper flux limits, providing constraints for future observations.

Findings

No pulsed radio emission detected.

Upper flux density limits established (0.9 - 9 mJy).

Results inform models of magnetar radio emission.

Abstract

We have searched for pulsed radio emission from magnetar 4U 0142+61 at the frequency of 111 MHz. No pulsed signal was detected from this source. Upper limits for mean flux density are 0.9 - 9 mJy depending on assumed duty cycle (.05 - .5) of the pulsar.