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科研机构
高能物理研究所 [2089]
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博士学位论文—中子全散射确定无定形大分子全原子结构
学位论文
北京: 中国科学院大学, 2021
作者:
韩泽华
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浏览/下载:58/0
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提交时间:2022/01/07
Detection of two bright radio bursts from magnetar SGR 1935 + 2154
期刊论文
Nature Astronomy, 2021, 卷号: 5, 页码: 414
作者:
Kirsten, F.
;
Snelders, M. P.
;
Jenkins, M.
;
Nimmo, K.
;
van den Eijnden, J.
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浏览/下载:41/0
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提交时间:2021/11/18
Astrophysics - High Energy Astrophysical Phenomena
Abstract: Fast radio bursts are millisecond-duration, bright radio signals (fluence 0.1-100 Jy ms) emitted from extragalactic sources of unknown physical origin. The recent CHIME/FRB and STARE2 detection of an extremely bright (fluence ~MJy ms) radio burst from the Galactic magnetar SGR 1935+2154 supports the hypothesis that (at least some) fast radio bursts are emitted by magnetars at cosmological distances. In follow-up observations totalling 522.7 h on source, we detect two bright radio bursts with fluences of 112 ± 22 Jy ms and 24 ± 5 Jy ms, respectively. Both bursts appear to be affected by interstellar scattering and we measure significant linear and circular polarization for the fainter burst. The bursts are separated in time by ~1.4 s, suggesting a non-Poissonian, clustered emission processsimilar to those seen in some repeating fast radio bursts. Together with the burst reported by CHIME/FRB and STARE2, as well as a much fainter burst seen by FAST (fluence 60 mJy ms), our observations demonstrate that SGR 1935+2154 can produce bursts with apparent energies spanning roughly seven orders of magnitude, and that the burst rate is comparable across this range. This raises the question of whether these four bursts arise from similar physical processes, and whether the fast radio burst population distribution extends to very low energies (~10
30
erg, isotropic equivalent).
Relation of Cyclotron Resonant Energy and Luminosity in a Strongly Magnetized Neutron Star GRO J1008-57 Observed by Insight-HXMT
期刊论文
The Astrophysical Journal, 2021, 卷号: 919, 页码: 33
作者:
Chen, X.
;
Wang, W.
;
Tang, Y. M.
;
Ding, Y. Z.
;
Tuo, Y. L.
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浏览/下载:7/0
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提交时间:2021/11/18
Neutron stars
X-ray binary stars
1108
1811
Accretion torque reversals in GRO J1008-57 revealed by Insight-HXMT
期刊论文
Journal of High Energy Astrophysics, 2021, 卷号: 30, 页码: 1
作者:
Wang, W.
;
Tang, Y. M.
;
Tuo, Y. L.
;
Epili, P. R.
;
Zhang, S. N.
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浏览/下载:18/0
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提交时间:2021/11/18
Beam Dynamics Investigation for a New Project of Compton Back Scattering Photon Source at NRNU MEPhI
会议论文
Brazil, 2021
作者:
V.S. Dyubkov
;
I.A. Ashanin
;
M. Gusarova
;
Yu.D. Kliuchevskaia
;
M.V. Lalayan
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  |  
浏览/下载:4/0
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提交时间:2022/01/18
Microbunching Instability in the Presence of Intrabeam Scattering for Single-Pass Accelerators
会议论文
Brazil, 2021
作者:
C.-Y. Tsai;W. Qin
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浏览/下载:2/0
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提交时间:2022/01/18
Coherent Radiation From Inverse Compton Scattering Sources by Means of Particle Trapping
会议论文
Brazil, 2021
作者:
A. Fallahi
;
L. Novotny
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浏览/下载:2/0
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提交时间:2022/01/18
Studies of Particle Losses From the Beam in the EU-XFEL Following Scattering by a Slotted Foil
会议论文
Brazil, 2021
作者:
A.T. Potter
;
A. Wolski
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浏览/下载:4/0
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提交时间:2022/01/18
Investigation of the Thomson Scattering Influence on Electron Beam Parameters in an Energy-Recovering Linear Accelerator on the Example of MESA
会议论文
Brazil, 2021
作者:
C.L. Lorey
;
K. Aulenbacher
;
A. Meseck
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  |  
浏览/下载:2/0
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提交时间:2022/01/18
High Duty Cycle EUV Radiation Source Based on Inverse Compton Scattering
会议论文
Brazil, 2021
作者:
R. Huang
;
Q.K. Jia
;
C. Li
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浏览/下载:37/0
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提交时间:2022/01/18
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