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Search for Pulsed Radiation from the Magnetar SGR 1935+2154

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Abstract

A superluminous burst from the famous magnetar SGR 1935+2154 was recorded in the radio range in April 2020. The source discovered as early as 2014 was active only in X-rays. Radiation from SGR 1935+2154 was observed in the frequency range from 400 to 1400 MHz after recording powerful pulses. As a result of monitoring the magnetar during 2019—2021 with the LSA LPI radio telescope at the frequency of 111 MHz, a single pulse was detected with the following parameters: DM = 320 pc/cm3, fluence F = 300 mJy ms, scattering time τ = 340 ms, and flux peak density S = 140 mJy. The dynamic spectrum and pulse profile are presented in this paper.

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  1. Pushchino Radio Astronomy Observatory, Astro Space Center, Lebedev Physical Institute, Russian Academy of Sciences, 142290, Pushchino, Moscow oblast, Russia

    V. A. Fedorova & A. E. Rodin

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  1. V. A. Fedorova
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  2. A. E. Rodin
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Correspondence to V. A. Fedorova or A. E. Rodin.

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Translated by A. Kazantsev

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Fedorova, V.A., Rodin, A.E. Search for Pulsed Radiation from the Magnetar SGR 1935+2154. Bull. Lebedev Phys. Inst. 48, 317–320 (2021). https://doi.org/10.3103/S1068335621100055

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  • DOI: https://doi.org/10.3103/S1068335621100055

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