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浏览/检索结果: 共11条,第1-10条 帮助

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Lattice Thermal Transport in the Homogeneous Cage-Like Compounds Cu3VSe4 and Cu3NbSe4: Interplay between Phonon-Phase Space, Anharmonicity, and Atomic Mass 期刊论文  OAI收割
CHEMPHYSCHEM, 2021, 页码: 7
作者:  
Yang, Dingfeng;  Yang, Junzhu;  Quan, Xuejun;  Zhang, Bin;  Wang, Guoyu
  |  收藏  |  浏览/下载:33/0  |  提交时间:2021/12/23
No pulsed radio emission during a bursting phase of a Galactic magnetar 期刊论文  OAI收割
Nature, 2020, 卷号: 587, 页码: 63-65
作者:  
HXMT
  |  收藏  |  浏览/下载:44/0  |  提交时间:2022/02/08
Astrophysics - High Energy Astrophysical Phenomena  Abstract: Fast radio bursts (FRBs) are millisecond-duration radio transients of unknown physical origin observed at extragalactic distances1-3. It has long been speculated that magnetars are the engine powering repeating bursts from FRB sources4-13, but no convincing evidence has been collected so far14. Recently, the Galactic magnetar SRG 1935+2154 entered an active phase by emitting intense soft íray bursts15. One FRB-like event with two peaks (FRB 200428) and a luminosity slightly lower than the faintest extragalactic FRBs was detected from the source, in association with a soft íray/hard-X-ray flare18-21. Here we report an eight-hour targeted radio observational campaign comprising four sessions and assisted by multi-wavelength (optical and hard-X-ray) data. During the third session, 29 soft-íray repeater (SGR) bursts were detected in íray energies. Throughout the observing period, we detected no single dispersed pulsed emission coincident with the arrivals of SGR bursts, but unfortunately we were not observing when the FRB was detected. The non-detection places a fluence upper limit that is eight orders of magnitude lower than the fluence of FRB 200428. Our results suggest that FRB-SGR burst associations are rare. FRBs may be highly relativistic and geometrically beamed, or FRB-like events associated with SGR bursts may have narrow spectra and characteristic frequencies outside the observed band. It is also possible that the physical conditions required to achieve coherent radiation in SGR bursts are difficult to satisfy, and that only under extreme conditions could an FRB be associated with an SGR burst.  
Time and frequency transfer using BDS-2 and BDS-3 carrier-phase observations 期刊论文  OAI收割
IET RADAR SONAR AND NAVIGATION, 2019, 卷号: 13, 期号: 8, 页码: 1249-1255
作者:  
Zhang, Pengfei;  Tu, Rui;  Zhang, Rui;  Liu, Na;  Gao, Yuping
  |  收藏  |  浏览/下载:21/0  |  提交时间:2021/11/29
Impact of spatial modulation on the third harmonic wave propagation and far-field focal spot in frequency conversion system 期刊论文  OAI收割
optik, 2014, 卷号: 125, 期号: 14, 页码: 3628
作者:  
Sun, M. Z.;  Zhang, J. Y.;  Zhang, Y. L.;  Bi, Q. Y.;  Xie, X. L.
收藏  |  浏览/下载:23/0  |  提交时间:2016/11/28
Impact of spatial modulation on the third harmonic wave propagation and far-field focal spot in frequency conversion system 期刊论文  OAI收割
optik, 2014, 卷号: 125, 期号: 14, 页码: 3628
作者:  
Sun, M. Z.;  Zhang, J. Y.;  Zhang, Y. L.;  Bi, Q. Y.;  Xie, X. L.
收藏  |  浏览/下载:16/0  |  提交时间:2016/11/28
Route of delivering 40-fs ultra-short laser pulses for gating photoconductive antenna in fiber-coupled terahertz time-domain spectroscopy 期刊论文  OAI收割
optical engineering, 2012, 卷号: 51, 期号: 8, 页码: 085001
作者:  
Liu, Jia;  Fan, Wen-Hui;  Chen, Long-Chao
收藏  |  浏览/下载:35/0  |  提交时间:2013/07/08
High-performance soft x-ray spectromicroscopy beamline at SSRF (EI CONFERENCE) 会议论文  OAI收割
作者:  
Xue C.;  Chen J.;  Wang Y.;  Wang Y.;  Wang Y.
收藏  |  浏览/下载:32/0  |  提交时间:2013/03/25
An intelligent method for early design and decision of space payload (EI CONFERENCE) 会议论文  OAI收割
2010 1st IEEE International Conference on Progress in Informatics and Computing, PIC 2010, December 10, 2010 - December 12, 2010, Shanghai, China
作者:  
Han C.-S.;  Wen M.
收藏  |  浏览/下载:21/0  |  提交时间:2013/03/25
Formation of super-concentrated hydrochloric acid in the third phase in tertiary amine N235-ptCl(6)(2-)-HCl system and its influences on the Pt microemulsion extraction 期刊论文  OAI收割
SCIENCE IN CHINA SERIES B-CHEMISTRY, 2009, 卷号: 52, 期号: 11, 页码: 1825-1834
作者:  
Huang Kun;  Chen Jing;  Zhang ChengFeng;  Li ZhiHong;  Pan QingHua
  |  收藏  |  浏览/下载:15/0  |  提交时间:2019/04/09
Formation of super-concentrated hydrochloric acid in the third phase in tertiary amine N235-ptCl(6)(2-)-HCl system and its influences on the Pt microemulsion extraction 期刊论文  OAI收割
SCIENCE IN CHINA SERIES B-CHEMISTRY, 2009, 卷号: 52, 期号: 11, 页码: 1825-1834
作者:  
Huang, K;  Chen, J;  Zhang, CF;  Li, ZH;  Pan, QH
收藏  |  浏览/下载:25/0  |  提交时间:2016/06/29