On radio emission of the Geminga pulsar and RBS 1223 at the frequency of 111 MHz

TL;DR

This study searched for pulsed radio emissions from the Geminga pulsar and RBS 1223 at 111 MHz but detected none, establishing upper limits on their flux densities.

Contribution

First to set upper limits on pulsed radio emissions from Geminga and RBS 1223 at 111 MHz.

Findings

No pulsed signals detected from either source.

Upper flux density limits established for both pulsars.

Abstract

I have searched for pulsed radio emission from the Geminga pulsar and for the nearby isolated neutron star 1RX J1308.6+2127 (RBS 1223) at the frequency of 111 MHz. No pulsed signals were detected from these sources. Upper limits for mean flux density are 0.4 - 4 mJy for the Geminga pulsar and 1.5 - 15 mJy for RBS 1223 depending on assumed duty cycle (.05 - .5) of the pulsars.