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arXiv · 1903.10991

On the possibility of registering X-ray flares related to fast radio bursts with the SRG/eROSITA telescope

A. D. Khokhryakova·D. A. Lyapina·S. B. Popov
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Abstract

In this note we discuss the possibility of detecting the accompanying X-ray emission from sources of fast radio bursts with the eROSITA telescope onboard the Spektr-RG observatory. It is shown that during four years of the survey program about 300 bursts are expected to appear in the field of view of eROSITA. About 1\% of them will be detected by ground-based radio telescopes. For a total energy release $\sim~10^{46}$~ergs depending on the spectral parameters and absorption in the interstellar and intergalactic media, an X-ray flare can be detected from distances from $\sim 1$~Mpc (thermal spectrum with $kT=200$~keV and strong absorption) up to $\sim1$~Gpc (power-law spectrum with photon index $\Gamma=2 $ and realistic absorption). Thus, eROSITA observations might help to provide important constraints on parameters of sources of fast radio bursts, or may even allow to identify the X-ray transient counterparts, which will help to constrain models of fast radio bursts generation.

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A. D. Khokhryakova, D. A. Lyapina, S. B. Popov. 2019-03-26. On the possibility of registering X-ray flares related to fast radio bursts with the SRG/eROSITA telescope. https://arxiv.org/abs/1903.10991

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