Detection of two new RRATs at 111 MHz

A. V. Dolgushev; M. O. Toropov; S. A. Tyul'bashev; S. V. Logvinenko; V. A. Samodurov; V. V. Oreshko

Detection of two new RRATs at 111 MHz

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arxiv 2309.00845 v1 pith:7ZBUMXUD submitted 2023-09-02 astro-ph.HE astro-ph.IM

V. A. Samodurov , S. A. Tyul'bashev , M. O. Toropov , A. V. Dolgushev , V. V. Oreshko , S. V. Logvinenko This is my paper · ORCID

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keywords pulseschannelfoundrratschannelsdegrfrequencyobservations

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abstract

A search for pulse signals in a area with declinations of $+52\degr <\delta <+55\degr$ was carried out on the LPA LPI radio telescope. When processing ten months of observations recorded in six frequency channels with a channel width of 415 kHz and a total bandwidth of 2.5 MHz, 22 thousand events were found with a pronounced dispersion delay of signals over frequency channels, i.e. having signs of pulsar pulses. It turned out that the found pulses belong to four known pulsars and two new rotating radio transients (RRATs). An additional pulse search conducted in 32-channel data with a channel width of 78 kHz revealed 8 pulses for the transient J0249+52 and 7 pulses for the transient J0744+55. Periodic radiation of transients was not detected. The analysis of observations shows that the found RRATs are most likely pulsars with nullings, where the proportion of nulling is greater than 99.9\%.

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Discovery of an RRAT-like pulsar via its single pulses in an MWA imaging survey
astro-ph.HE 2025-02 conditional novelty 6.0 of 10

A new pulsar discovered in MWA imaging shows RRAT-like bright bursts alongside persistent faint pulses, with bright pulses arriving at later rotation phases and strongly varying polarization angle.

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