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Statistical properties of fast radio bursts elucidate their origins: magnetars are favored over gamma-ray bursts
期刊论文
RESEARCH IN ASTRONOMY AND ASTROPHYSICS, 2021, 卷号: 21, 期号: 8, 页码: 8
作者:
Cui, Xiang-Han
;
Zhang, Cheng-Min
;
Wang, Shuang-Qiang
;
Zhang, Jian-Wei
;
Li, Di
收藏
  |  
浏览/下载:20/0
  |  
提交时间:2022/01/17
transients
fast radio bursts
methods
statistical
stars
magnetars
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:42/0
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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).
Geocentric time correction for Insight-HXMT detection of the x-ray counterpart of the FRB by CHIME and STARE2 from SGR 1935+2154
GCN
2020
作者:
-N
;
Zhang S
;
-K
;
Li C
;
J
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浏览/下载:37/0
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提交时间:2020/05/20
Geocentric time correction for Insight-HXMT detection of the x-ray counterpart of the FRB by CHIME and STARE2 from SGR 1935+2154
ATEL
2020
作者:
Zhang, S. -N.
;
Li, C. -K.
;
Zheng, S. -J.
;
Li, X. -B.
;
Tuo, Y. -L.
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  |  
浏览/下载:79/0
  |  
提交时间:2020/07/03
X-ray
Gamma Ray
Soft Gamma-ray Repeater
Fast Radio Burst
Insight-HXMT X-ray and hard X-ray detection of the double peaks of the Fast Radio Burst from SGR 1935+2154
GCN
2020
作者:
-N
;
Zhang S
;
L
;
Xiong S
;
Li, C
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  |  
浏览/下载:22/0
  |  
提交时间:2020/05/20
Deep Noise Tracking Network: A Hybrid Signal Processing/Deep Learning Approach to Speech Enhancement
会议论文
Hyderabad, India, 2018-9-2~2018-9-6
作者:
Nie S(聂帅)
;
Shan Liang
;
Bin Liu
;
Yaping Zhang
;
Wenju Liu
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  |  
浏览/下载:1/0
  |  
提交时间:2020/10/22
The ZTSpeech System for CHiME-5 Challenge: A Far-field Speech Recognition System with Front-end and Robust Back-end
会议论文
Hyderabad, India, 2018-9
作者:
Li, Chenxing
;
Wang Tieqiang
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  |  
浏览/下载:6/0
  |  
提交时间:2020/07/21
Boosting noise robustness of acoustic model via deep adversarial training
会议论文
加拿大卡尔加里, 2018-4-15
作者:
Liu, Bin
;
Nie, Shuai
;
Zhang, Yaping
;
Ke, Dengfeng
;
Liang, Shan
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  |  
浏览/下载:8/0
  |  
提交时间:2020/05/15
Robust Speech Recognition
Deep Adversarial Training
Acoustic Model
Generative Adversarial Net
Intensity Mapping of H alpha, H beta, [O II], and [O III] Lines at z < 5
期刊论文
ASTROPHYSICAL JOURNAL, 2017, 卷号: 835, 期号: 2
作者:
Gong, Yan
;
Cooray, Asantha
;
Silva, Marta B.
;
Zemcov, Michael
;
Feng, Chang
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  |  
浏览/下载:17/0
  |  
提交时间:2017/09/01
cosmology: theory
diffuse radiation
intergalactic medium
large-scale structure of universe
Intensity Mapping of Hα, Hβ, , and Lines at z?5
期刊论文
The Astrophysical Journal, 2017, 卷号: 835, 期号: 2
作者:
Gong,Yan
;
Cooray,Asantha
;
Silva,Marta B.
;
Zemcov,Michael
;
Feng,Chang
收藏
  |  
浏览/下载:1/0
  |  
提交时间:2020/03/11
cosmology: theory
diffuse radiation
intergalactic medium
large-scale structure of universe
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