Abstract
Search observations of radio signals from the new magnetar SGR J1830–0645 have been carried out since January 2021 and up to the present at the Pushchino Radio Astronomy Observatory of the Lebedev Physics Institute of Russian Academy of Sciences (PRAO LPI) at a frequency of 111 MHz with the Large Phased Array (LPA). According to results of processing observations for 2021, periodic or pulsed radio signals were not detected. The upper limit for estimating the radio flux density of SGR J1830–0645 at 111 MHz is 500 mJy. The 23.5 s radio pulsar J0250+5854 was used as a control radio source. Its flux density at 111 MHz was measured to be 9.6 ± 1.6 mJy. We performed pulse timing, measured and calculated the parameters of J0250+5854.
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ACKNOWLEDGMENTS
The authors are grateful to I.F. Malov and R.D. Dagkesamansky for reading the manuscript, constructive advice, and useful comments that contributed to the improvement of the work. The authors thank the staff of the Scientific and Technical Department of the PRAO for the reliable and high-quality support of radio astronomy observations, as well as the referee for the remarks made.
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Losovsky, B.Y., Glushak, A.P. Observations of Magnetar SGR J1830–0645 and Pulsar J0250+5854 at 111 MHz. Astron. Rep. 66, 981–988 (2022). https://doi.org/10.1134/S1063772922110130
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DOI: https://doi.org/10.1134/S1063772922110130