机构

• 上海应用物理研究所 [13]
• 高能物理研究所 [12]
• 物理研究所 [7]
• 金属研究所 [1]
• 上海微系统与信息技术... [1]
• 西安光学精密机械研究... [1]
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采集方式

• OAI收割 [34]
• iSwitch采集 [1]

内容类型

• 期刊论文 [35]

发表日期

• 2020 [1]
• 2019 [1]
• 2017 [1]
• 2016 [3]
• 2015 [2]
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学科主题

• Physics [12]
• Instrument... [2]
• Nuclear Sc... [2]
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筛选

浏览/检索结果: 共35条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 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.   Obliquely incident laser and electron beam interaction in an undulator 期刊论文  OAI收割 PHYSICAL REVIEW ACCELERATORS AND BEAMS, 2019, 卷号: 22, 期号: 7, 页码: - 作者:  Wang, XF;  Feng, C;  Tsai, CY;  Zeng, L;  Zhao, ZT   |  收藏  |  浏览/下载：18/0  |  提交时间：2020/10/16 GENERATION  RADIATION  OPERATION  COHERENT   Gain cascading scheme of a free-electron-laser oscillator 期刊论文  OAI收割 PHYSICAL REVIEW ACCELERATORS AND BEAMS, 2017, 卷号: 20, 期号: 11, 页码: - 作者:  Li, K;  Deng, HX   |  收藏  |  浏览/下载：25/0  |  提交时间：2018/08/30 X-ray Pulses  Stimulated-emission  Extreme-ultraviolet  Magnetic-field  Storage-ring  Fel  Generation  Radiation  Coherent  Operation   Intense terahertz radiation from relativistic laser–plasma interactions 期刊论文  iSwitch采集 Plasma physics and controlled fusion, 2016, 卷号: 59, 期号: 1 作者:  Liao,G Q;  Li,Y T;  Li,C;  Liu,H;  Zhang,Y H 收藏  |  浏览/下载：72/0  |  提交时间：2019/05/09 Intense terahertz radiation  Laser–plasma interactions  Coherent transition radiation  Transient current  Mode conversion   Feasibility study of generating ultra-high harmonic radiation with a single stage echo-enabled harmonic generation scheme 期刊论文  OAI收割 NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2016, 卷号: 834, 页码: 30-35 作者:  Zhou, KS;  Feng, C;  Wang, D 收藏  |  浏览/下载：22/0  |  提交时间：2017/03/02 Coherent soft x-ray radiation  Water window  EEHG  ISR  CSR  IBS   Seeded FEL Experiments at the SDUV-FEL Test Facility 期刊论文  OAI收割 IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 2016, 卷号: 63, 期号: 2, 页码: 930—938 作者:  Zhao, ZT;  Wang, D 收藏  |  浏览/下载：28/0  |  提交时间：2016/09/12 FREE-ELECTRON LASER  GAIN HARMONIC-GENERATION  RAY SASE-FEL  X-RAY  EXTREME-ULTRAVIOLET  SYNCHROTRON-RADIATION  PULSES  POLARIZATION  COHERENT  INTENSE   Structural characterization and low-temperature properties of Ru/C multilayer monochromators with different periodic thicknesses 期刊论文  OAI收割 JOURNAL OF SYNCHROTRON RADIATION, 2015, 卷号: 22, 页码: 1379—1385 作者:  Jiang, H;  He, Y;  He, YM;  Li, AG;  Wang, H 收藏  |  浏览/下载：35/0  |  提交时间：2016/03/04 COHERENT SYNCHROTRON-RADIATION  X-RAY  TOTAL-REFLECTION  SCATTERING  OPTICS   Suppression of the emittance growth induced by coherent synchrotron radiation in triple-bend achromats 期刊论文  OAI收割 CHINESE PHYSICS C, 2015, 卷号: 39, 期号: 5, 页码: 57001 作者:  Huang XY(黄玺洋);  Jiao Y(焦毅);  Xu G(徐刚);  Cui XH(崔小昊);  Huang, XY 收藏  |  浏览/下载：27/0  |  提交时间：2016/04/18 coherent synchrotron radiation  emittance growth  achromat   Feasibility study on optical vortex generation at Shanghai deep ultraviolet free-electron laser 期刊论文  OAI收割 NUCLEAR SCIENCE AND TECHNIQUES, 2014, 卷号: 25, 期号: 1 Deng, HX 收藏  |  浏览/下载：27/0  |  提交时间：2015/03/13 EXTREME-ULTRAVIOLET  COHERENT  BEAM  POLARIZATION  RADIATION  OPERATION  PULSES   Polarization switching demonstration using crossed-planar undulators in a seeded free-electron laser 期刊论文  OAI收割 PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS, 2014, 卷号: 17, 期号: 2 Deng, HX; Zhang, T; Feng, L; Feng, C; Liu, B; Wang, XT; Lan, TH; Wang, GL; Zhang, WY; Liu, XQ; Chen, JH; Zhang, M; Lin, GQ; Zhang, MA; Wang, D; Zhao, ZT 收藏  |  浏览/下载：30/0  |  提交时间：2015/03/13 GAIN HARMONIC-GENERATION  EXTREME-ULTRAVIOLET  SYNCHROTRON-RADIATION  OPERATION  COHERENT