Abstract
We consider the possibility of detecting the accompanying X-ray emission from the sources of fast radio bursts with the eROSITA telescope onboard the Spectrum–Roentgen–Gamma (SRG) satellite. We show that up to 300 radio bursts can fall within the eROSITA field of view in four years of survey observations. About 1% of them will be recorded by ground-based radio telescopes. At a total X-ray energy release of ∼1046 erg, depending on the spectral parameters and absorption in the interstellar and intergalactic media, an X-ray flare can be recorded from distances from 1 Mpc (a thermal spectrum with a temperature of 200 keV and strong absorption) to 1 Gpc (a power-law spectrum with a photon index Γ = 2 and realistic absorption). Thus, SRG/eROSITA data can provide important constraints on the parameters of the sources of fast radio bursts and, probably, also to identify the sources in the X-ray band, which will make it possible to choose the models describing the generation of these bursts.
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Russian Text © A.D. Khokhryakova, D.A. Lyapina, S.B. Popov, 2019, published in Pis’ma v Astronomicheskii Zhurnal, 2019, Vol. 45, No. 3, pp. 163–169.
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Khokhryakova, A.D., Lyapina, D.A. & Popov, S.B. Prospects for Recording X-ray Flares Accompanying Fast Radio Bursts with the SRG/eROSITA Telescope. Astron. Lett. 45, 120–126 (2019). https://doi.org/10.1134/S1063773719030034
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DOI: https://doi.org/10.1134/S1063773719030034