The second decametre pulsar census at UTR-2 radio telescope

TL;DR

This study reports the second decametre wave range pulsar census at UTR-2, detecting 20 pulsars, refining their parameters, and setting flux density limits for undetected sources, enhancing low-frequency pulsar data.

Contribution

It presents the second census at UTR-2 with doubled sensitivity, detecting new pulsar emissions and refining their parameters in the decametre wave range.

Findings

Detected decametre emission from 20 pulsars.

Refined dispersion measures and rotation periods for several pulsars.

Estimated upper flux density limits for 102 undetected pulsars.

Abstract

Our paper presents the results of the second census of pulsars in decametre wave range at UTR-2 radio telescope. Over the past ten years, the number of discovered nearby pulsars in the world has doubled, which has made it urgent to search for a low-frequency radio emission from newly discovered sources. To increase this census sensitivity, the integration time was doubled compared with the first census of 2010-2013. As a result, the decametre radio emission of 20 pulsars was detected, their flux densities and the shape of pulses were obtained. The dispersion measure for 10 pulsars and the rotation period for 8 pulsars were refined. For several pulsars the scattering time constant and FWHM were estimated in decametre wave range. Upper limits of flux densities of 102 not yet detected pulsars were also estimated.