Detection of Two New RRATs at 111 MHz

V. A. Samodurov; Самодуров В. А.; S. A. Tyul’bashev; Тюльбашев С. А.; M. O. Toropov; Торопов М. О.; A. V. Dolgushev; Долгушев А. В.; V. V. Oreshko; Орешко В. В.; S. V. Logvinenko; Логвиненко С. В.

doi:10.31857/S0004629923070071

Detection of Two New RRATs at 111 MHz

作者: Samodurov V.A.¹^,2, Tyul’bashev S.A.², Toropov M.O.³, Dolgushev A.V.⁴, Oreshko V.V.², Logvinenko S.V.²
隶属关系:
1. National Research University Higher School of Economics
2. Lebedev Physical Institute, Astro Space Center, Pushchino Radio Astronomical Observatory
3. TEK Inform
4. Yandex
期: 卷 100, 编号 6 (2023)
页面: 517-523
栏目: Articles
URL: https://journals.rcsi.science/0004-6299/article/view/139091
DOI: https://doi.org/10.31857/S0004629923070071
EDN: https://elibrary.ru/MDAIQC
ID: 139091

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详细

At the LPA LPI radio telescope, a search was conducted for pulse signals in a specific area with declinations +52°<δ<+55°. The processing involved ten months of observations recorded in six frequency channels, each with a channel width of 415 kHz and a total bandwidth of 2.5 MHz. The analysis of the data revealed 22 000 events, exhibiting a pronounced dispersion delay of signals over the frequency channels, which are indicative of pulsar pulses. These pulses were found to belong to four known pulsars and two new rotating radio transients (RRAT). Additional pulse search was carried out in 32-channel data with a channel width of 78 kHz. This led to the discovery of 8 pulses for the transient J0249+52 and 7 pulses for the transient J0744+55. No periodic emission of transients was detected. The analysis of the observations indicates a high probability that the identified RRATs are pulsars with nullings, where the fraction of nullings is greater than 99.9%.

关键词

processing methods, rotating radio transient (RRAT), pulsar

参考

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