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期刊论文 [7]
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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).
Polarization Channel Estimation for Circular and Non-Circular Signals in Massive MIMO Systems
期刊论文
IEEE JOURNAL OF SELECTED TOPICS IN SIGNAL PROCESSING, 2019, 卷号: 13, 页码: 1001-1016
作者:
Wang, Xianpeng
;
Wan, Liangtian
;
Huang, Mengxing
;
Shen, Chong
;
Zhang, Kun
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浏览/下载:24/0
  |  
提交时间:2019/12/02
Massive MIMO system
DOA and polarization estimation
circular and non-circular signals
multiple signal classification (MUSIC) algorithm
Z-pole test of effective dark matter diboson interactions at the CEPC
期刊论文
EUROPEAN PHYSICAL JOURNAL C, 2018, 卷号: 78, 期号: 8, 页码: 622
作者:
Gao Y(高宇)
;
Jin MJ(金明杰)
;
Jin, MJ
;
Gao, Y
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浏览/下载:5/0
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提交时间:2019/09/24
Sequencing of the complete mitochondrial genome of a fish-parasitic flatworm Paratetraonchoides inermis (Platyhelminthes: Monogenea): tRNA gene arrangement reshuffling and implications for phylogeny
期刊论文
PARASITES & VECTORS, 2017, 卷号: 10, 期号: 1, 页码: 12
作者:
Zhang, Dong
;
Zou, Hong
;
Wu, Shan G.
;
Li, Ming
;
Jakovlic, Ivan
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  |  
浏览/下载:22/0
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提交时间:2019/09/26
Mitochondrial genome
Tetraonchidea
Neodermata
Monopisthocotylea
A plus T bias
Phylogenomics
Morphology
Gene order
Excitonic Circular Dichroism of Chiral Quantum Rods
期刊论文
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2017, 卷号: 139, 期号: 25, 页码: 8734-8739
作者:
Gao, Xiaoqing
;
Zhang, Xiuwen
;
Deng, Ke
;
Han, Bing
;
Zhao, Luyang
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浏览/下载:29/0
  |  
提交时间:2017/09/06
Biscarbazolylmethane-based cyanine: a two-photon excited fluorescent probe for DNA and selective cell imaging
期刊论文
JOURNAL OF MATERIALS CHEMISTRY B, 2014, 卷号: 2, 期号: 16, 页码: 2301-2310
作者:
Zheng, Yong-Chao
;
Zheng, Mei-Ling
;
Chen, Shu
;
Zhao, Zhen-Sheng
;
Duan, Xuan-Ming
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  |  
浏览/下载:21/0
  |  
提交时间:2018/03/15
Induced Circular Dichroism of Anionic Porphyrin TPPS Aggregates in DNA Solutions
期刊论文
POLYMER JOURNAL, 2009, 卷号: 41, 期号: 9, 页码: 739-743
作者:
Liao, Bo
;
He, Benqiao
;
Liu, Ruigang
;
Huang, Yong
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  |  
浏览/下载:13/0
  |  
提交时间:2019/04/09
Porphyrin
Dna
Chirality
超快线性衍射效应的研究
学位论文
博士: 中国科学院上海光学精密机械研究所, 2003
作者:
席鹏
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浏览/下载:13/0
  |  
提交时间:2016/11/28
衍射
Dammann光栅
Talbot效应
六角阵列
超短脉冲
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