Reanalysis of the X-Ray-burst-associated FRB 200428 with Insight-HXMT Observations
A double-peak X-ray burst from the Galactic magnetar SGR J1935+2154 was discovered to be associated with the two radio pulses of FRB 200428 separated by 28.97 ± 0.02 ms. Precise measurements of the timing and spectral properties of the X-ray bursts are helpful for understanding the physical origin o...
| Main Authors: | , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/acda1d |
| _version_ | 1797695396307271680 |
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| author | M. Y. Ge C. Z. Liu S. N. Zhang F. J. Lu Z. Zhang Z. Chang Y. L. Tuo X. B. Li C. K. Li S. L. Xiong C. Cai X. F. Li R. Zhang Z. G. Dai J. L. Qu L. M. Song S. Zhang L. J. Wang |
| author_facet | M. Y. Ge C. Z. Liu S. N. Zhang F. J. Lu Z. Zhang Z. Chang Y. L. Tuo X. B. Li C. K. Li S. L. Xiong C. Cai X. F. Li R. Zhang Z. G. Dai J. L. Qu L. M. Song S. Zhang L. J. Wang |
| author_sort | M. Y. Ge |
| collection | DOAJ |
| description | A double-peak X-ray burst from the Galactic magnetar SGR J1935+2154 was discovered to be associated with the two radio pulses of FRB 200428 separated by 28.97 ± 0.02 ms. Precise measurements of the timing and spectral properties of the X-ray bursts are helpful for understanding the physical origin of fast radio bursts. In this paper, we have reconstructed some information about the hard X-ray events, which were lost because the High Energy X-ray Telescope (HE) on board the Insight-HXMT mission was saturated by this extremely bright burst, and used the information to improve the temporal and spectral analyses of the X-ray burst. The arrival times of the two X-ray peaks by fitting the new Insight-HXMT/HE lightcurve with multi-Gaussian profiles are 2.77 ± 0.45 ms and 34.30 ± 0.56 ms after the first peak of FRB 200428, respectively, while these two parameters are 2.57 ± 0.52 ms and 32.5 ± 1.4 ms if the fitting profile is a fast-rise and exponential decay function. The spectrum of the two X-ray peaks could be described by a cutoff power law with cutoff energy ∼60 keV and photon index ∼1.4; the latter is softer than the result obtained in Li et al. when the two X-ray peaks appeared. |
| first_indexed | 2024-03-12T03:11:48Z |
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| id | doaj.art-02de0983a4fb4f1badf4990614982acb |
| institution | Directory Open Access Journal |
| issn | 1538-4357 |
| language | English |
| last_indexed | 2024-03-12T03:11:48Z |
| publishDate | 2023-01-01 |
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| series | The Astrophysical Journal |
| spelling | doaj.art-02de0983a4fb4f1badf4990614982acb2023-09-03T14:22:18ZengIOP PublishingThe Astrophysical Journal1538-43572023-01-0195316710.3847/1538-4357/acda1dReanalysis of the X-Ray-burst-associated FRB 200428 with Insight-HXMT ObservationsM. Y. Ge0https://orcid.org/0000-0002-2749-6638C. Z. Liu1S. N. Zhang2https://orcid.org/0000-0001-5586-1017F. J. Lu3https://orcid.org/0000-0003-3248-6087Z. Zhang4https://orcid.org/0000-0003-4673-773XZ. Chang5https://orcid.org/0000-0003-4856-2275Y. L. Tuo6https://orcid.org/0000-0003-3127-0110X. B. Li7https://orcid.org/0000-0003-4585-589XC. K. Li8S. L. Xiong9https://orcid.org/0000-0002-4771-7653C. Cai10https://orcid.org/0000-0002-6540-2372X. F. Li11https://orcid.org/0000-0002-2793-9857R. Zhang12https://orcid.org/0000-0002-8687-2728Z. G. Dai13J. L. Qu14https://orcid.org/0000-0002-9796-2585L. M. Song15https://orcid.org/0000-0003-0274-3396S. Zhang16L. J. Wang17https://orcid.org/0000-0002-8352-1359Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, People's Republic of China liucz@ihep.ac.cnKey Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, People's Republic of China liucz@ihep.ac.cnKey Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, People's Republic of China liucz@ihep.ac.cn; University of Chinese Academy of Sciences , Chinese Academy of Sciences, Beijing 100049, People's Republic of ChinaKey Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, People's Republic of China liucz@ihep.ac.cn; Key Laboratory of Stellar and Interstellar Physics and School of Physics and Optoelectronics, Xiangtan University , Xiangtan 411105, People's Republic of ChinaKey Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, People's Republic of China liucz@ihep.ac.cnKey Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, People's Republic of China liucz@ihep.ac.cnKey Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, People's Republic of China liucz@ihep.ac.cnKey Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, People's Republic of China liucz@ihep.ac.cnKey Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, People's Republic of China liucz@ihep.ac.cnKey Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, People's Republic of China liucz@ihep.ac.cnKey Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, People's Republic of China liucz@ihep.ac.cnKey Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, People's Republic of China liucz@ihep.ac.cnTheoretical Physics Division, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, People's Republic of ChinaCAS Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China , Hefei 230026, People's Republic of ChinaKey Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, People's Republic of China liucz@ihep.ac.cnKey Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, People's Republic of China liucz@ihep.ac.cnKey Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, People's Republic of China liucz@ihep.ac.cnKey Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, People's Republic of China liucz@ihep.ac.cnA double-peak X-ray burst from the Galactic magnetar SGR J1935+2154 was discovered to be associated with the two radio pulses of FRB 200428 separated by 28.97 ± 0.02 ms. Precise measurements of the timing and spectral properties of the X-ray bursts are helpful for understanding the physical origin of fast radio bursts. In this paper, we have reconstructed some information about the hard X-ray events, which were lost because the High Energy X-ray Telescope (HE) on board the Insight-HXMT mission was saturated by this extremely bright burst, and used the information to improve the temporal and spectral analyses of the X-ray burst. The arrival times of the two X-ray peaks by fitting the new Insight-HXMT/HE lightcurve with multi-Gaussian profiles are 2.77 ± 0.45 ms and 34.30 ± 0.56 ms after the first peak of FRB 200428, respectively, while these two parameters are 2.57 ± 0.52 ms and 32.5 ± 1.4 ms if the fitting profile is a fast-rise and exponential decay function. The spectrum of the two X-ray peaks could be described by a cutoff power law with cutoff energy ∼60 keV and photon index ∼1.4; the latter is softer than the result obtained in Li et al. when the two X-ray peaks appeared.https://doi.org/10.3847/1538-4357/acda1dMagnetarsX-ray burstsRadio transient sources |
| spellingShingle | M. Y. Ge C. Z. Liu S. N. Zhang F. J. Lu Z. Zhang Z. Chang Y. L. Tuo X. B. Li C. K. Li S. L. Xiong C. Cai X. F. Li R. Zhang Z. G. Dai J. L. Qu L. M. Song S. Zhang L. J. Wang Reanalysis of the X-Ray-burst-associated FRB 200428 with Insight-HXMT Observations The Astrophysical Journal Magnetars X-ray bursts Radio transient sources |
| title | Reanalysis of the X-Ray-burst-associated FRB 200428 with Insight-HXMT Observations |
| title_full | Reanalysis of the X-Ray-burst-associated FRB 200428 with Insight-HXMT Observations |
| title_fullStr | Reanalysis of the X-Ray-burst-associated FRB 200428 with Insight-HXMT Observations |
| title_full_unstemmed | Reanalysis of the X-Ray-burst-associated FRB 200428 with Insight-HXMT Observations |
| title_short | Reanalysis of the X-Ray-burst-associated FRB 200428 with Insight-HXMT Observations |
| title_sort | reanalysis of the x ray burst associated frb 200428 with insight hxmt observations |
| topic | Magnetars X-ray bursts Radio transient sources |
| url | https://doi.org/10.3847/1538-4357/acda1d |
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