Using five-year-monitoring observations, we carried out a blind search for pulses for rotating radio transient (RRAT) J0139+33 and PSR B0320+39. At the interval ±1.5m of the time corresponding to the source passing through the meridian, we detected 39377 individual pulses for the pulsar B0320+39 and 1013 pulses for RRAT J0139+33. The share of registered pulses from the total number of observed periods for the pulsar B0320+39 is 74%, and for the transient J0139+33 it is 0.42%. The signal-to-noise ratio (S/N) for the strongest registered pulses is, approximately, the following: S/N = 262 (for B0320+39) and S/N = 154 (for J0139+33). We obtained distributions of the number of detected pulses in S/N units for the pulsar and for the rotating transient. The distributions could be approximated with lognormal and power dependences. For the B0320+39 pulsar, the dependence is lognormal, and it turns into a power dependence at high values of S/N; and for RRAT J0139+33, the distribution of pulses by energy is described by a broken (bimodal) power dependence with an exponent of about 0.4 and 1.8 (S/N ≤ 19 and S/N ≥ 19). We did not detect a regular (pulsar) emission of J0139+33. Analysis of the obtained data suggests that RRAT J0139+33 is a pulsar with giant pulses.
Astronomy and Astrophysics
- Pub Date:
- March 2021
- pulsars: individual: J0139+33;
- Astrophysics - High Energy Astrophysical Phenomena;
- Astrophysics - Solar and Stellar Astrophysics;
- 6 pages, 5 figures