On the Distance of SGR 1935+2154 Associated with FRB 200428 and Hosted in SNR G57.2+0.8

Abstract

Owing to the detection of an extremely bright fast radio burst (FRB) 200428 associated with a hard X-ray counterpart from the magnetar soft gamma-ray repeater (SGR) 1935+2154, the distance of SGR 1935+2154 potentially hosted in the supernova remnant (SNR) G57.2+0.8 can be revisited. Under the assumption that the SGR and the SNR are physically related, in this Letter, by investigating the dispersion measure (DM) of the FRB contributed by the foreground medium of our Galaxy and the local environments and combining with other observational constraints, we find that the distance of SGR 1935+2154 turns out to be $9.0\pm 2.5$kpc and the SNR radius falls into $10$ to $18$pc since the local DM contribution is as low as $0-18$pc cm${}^{-3}$. These results are basically consistent with the previous studies. In addition, an estimate for the Faraday rotation measure of the SGR and SNR is also carried out.

arXiv comment7 pages, 3 figures (replotted), an uncertainty analysis of the distance estimate has been added, accepted for publication in ApJ Letters

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• An accreting stellar binary model for active periodic fast radio bursts
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• Constraining the X-ray - Infrared spectral index of second-timescale flares from SGR1935+2154 with Palomar Gattini-IR
• Finding the Particularity of the Active Episode of SGR J1935+2154 during Which FRB 20200428 Occurred: Implication from Statistics of Fermi/GBM X-Ray Bursts
• Bursts before Burst: A Comparative Study on FRB 200428-associated and FRB-absent X-ray Bursts from SGR J1935+2154
• High-energy gamma-ray emission from SNR G57.2+0.8 hosting SGR J1935+2154
• On the magnetoionic environments of fast radio bursts
• Searching for Magnetar Binaries Disrupted by Core-Collapse Supernovae
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• Quasi-Periodic Peak Energy Oscillations in X-ray Bursts from SGR J1935+2154
• A search using GEO600 for gravitational waves coincident with fast radio bursts from SGR 1935+2154
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• Constraints on the progenitor models of fast radio bursts from population synthesis with the first CHIME/FRB catalog
• An Arecibo Search for Fast Radio Transients from M87
• The radio/X-ray burst from SGR 1935+2154: radiation mechanisms and the possible QPOs
• Multiwavelength Radiation from the Interaction between Magnetar Bursts and Companion Star in a Binary System
• The Northern Cross Fast Radio Burst project: V. Search for transient radio emission from Galactic magnetars
• Eclipsed X-ray Bursts from Magnetar SGR J1935+2154 and the Fireball Measurements
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• Spectral Evidence of Heavy Nuclei from the Neutron Star Crust in Magnetar Bursts
• Searching radio signals from two magnetars and a high-magnetic field pulsar and the serendipitous discovery of a new radio pulsar PSR J1935+2200
• The Fast Radio Burst-emitting magnetar SGR 1935+2154 -- proper motion and variability from long-term Hubble Space Telescope monitoring