Pushchino Multibeam Pulsar Search. IX. Detection of a minute-long transient on the LPA antenna

TL;DR

This paper reports the detection of a new type of transient radio source, LPA J0108+13, characterized by repeated bursts lasting 1 to 4 minutes, observed over a decade with the LPA telescope, with uncertain origin.

Contribution

The discovery of a potentially new class of transient radio sources through long-term observations at 110.4 MHz.

Findings

Detected 6 bursts over 200 hours of observation.

Bursts have flux densities from tens to hundreds of Jy.

Duration of bursts ranges from approximately 1 to 4 minutes.

Abstract

A transient (LPA J0108+13) with repeated bursts was detected on the Large Phased Array (LPA) radio telescope at a central frequency of 110.4 MHz in the direction of the radio galaxy 3C 33. The flux density of bursts ranges from tens to hundreds of Jy, and the duration of the bursts is \approx 1^m - 4^m. In daily observations, the total duration of which at the location of the transient exceeds 200 hours in the observation interval 2013-2025, 6 bursts were found. The nature of the source could not be determined. We believe that a new type of transients has been discovered.