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• 长春光学精密机械与物... [3]
• 高能物理研究所 [3]
• 大连化学物理研究所 [2]
• 近代物理研究所 [2]
• 力学研究所 [1]
• 南海海洋研究所 [1]
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• OAI收割 [14]

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• 期刊论文 [11]
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• 2020 [1]
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• Chemistry [1]
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浏览/检索结果: 共14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.   Cross-Species Investigation on Resting State Electroencephalogram 期刊论文  OAI收割 BRAIN TOPOGRAPHY, 2019, 卷号: 32, 期号: 5, 页码: 808-824 作者:  Zhang, Fengrui;  Wang, Feixue;  Yue, Lupeng;  Zhang, Huijuan;  Peng, Weiwei   |  收藏  |  浏览/下载：92/0  |  提交时间：2019/10/25 Electroencephalogram (EEG)  Resting state  Power spectra  1  f characteristic  Across-species comparison   Observing spectral characteristics over a continental shelf and slope in the South China Sea 期刊论文  OAI收割 ACTA OCEANOLOGICA SINICA, 2013, 卷号: 32, 期号: 7, 页码: 29-37 [Shang Xiaodong; Xu Chi; Chen Guiying] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China; [Wu Lixin] Chinese Acad Sci, Inst Acoust, Beijing 100190, Peoples R China 收藏  |  浏览/下载：24/0  |  提交时间：2015/01/14 dissipation spectra  characteristic frequencies  South China Sea   Deep subwavelength electromagnetic transparence through dual metallic gratings with ultranarrow slits (EI CONFERENCE) 会议论文  OAI收割 2012 International Workshop on Metamaterials, Meta 2012, October 8, 2012 - October 10, 2012, Nanjing, China 作者:  Liu Z.;  Li S.;  Li F. 收藏  |  浏览/下载：28/0  |  提交时间：2013/03/25 We study the transmission response of microwaves through two identical metallic plates perforated with periodical ultranarrow slits. The experimental and numerical transmission spectra consistently display a striking transmission peak at wavelength much larger than any characteristic length of the microstructure (e.g.  about 20-fold of the lattice constant)  which can not be directly interpreted by the existing mechanisms. Both the LC-circuit-based microscopic picture and the effective-medium-based macroscopic model are established to capture the essential physics behind such unexpected resonance at the deep subwavelength scale. 2012 IEEE.   Vertical-external-cavity surface-emitting lasers: Numerical simulation, and characterization (EI CONFERENCE) 会议论文  OAI收割 Optoelectronic Materials and Devices III, October 27, 2008 - October 30, 2008, Hangzhou, China 作者:  Qin L. 收藏  |  浏览/下载：27/0  |  提交时间：2013/03/25 Firstly  the vertical external-cavity surface-emiting lasers (VECSELs) device structure and model was given  and the output characteristic was simple calculated. Then  in experiment  the VECSELs were grown  bonded on to the heat sink  and optically pumped by high-power 808nm diode laser array with fiber output module  the light emission spectra were measured. Finally  The thermal characteristic of the VECSELs was investigated by changing the temperature of the substrate. 2008 SPIE.   The coulomb potential energy effect on the intensity of the characteristic lines at highly charged ion incendence on Al surface 期刊论文  OAI收割 ACTA PHYSICA SINICA, 2008, 卷号: 57, 期号: 1, 页码: 137-142 作者:  Wang Li;  Zhang Xiao-An;  Yang Zhi-Hu;  Chen Xi-Meng;  Zhang Hong-Qiang   |  收藏  |  浏览/下载：14/0  |  提交时间：2010/10/29 highly charged ion  coulomb potential energy  characteristic lines  spectra intensity   A novel method of calculation-separating second order spectrum in grating spectrometers (EI CONFERENCE) 会议论文  OAI收割 ICO20: Optical Devices and Instruments, August 21, 2005 - August 26, 2005, Changchun, China 作者:  Xiang Y. 收藏  |  浏览/下载：15/0  |  提交时间：2013/03/25 In grating spectrometers  according to wavelength  short-wave second-order spectrum superimposes on long-wave spectrum with the wavelength twice as long as the short-wave. Usually spectrum of long-wave range is got via preventing the superimposition of short-wave second-order spectrum by cut-off filters. This paper analyses the characteristic of the ratio of short-wave second-order spectrum in long-wave superimposing spectral range to first-order spectrum in short-wave free spectral range of diffraction gratings. The paper studies a novel method of obtaining long-wave spectrum via calculation-separating short-wave second-order spectrum from mixed spectra in long-wave superimposing spectral range by data processing with the spectrum of free spectral range and the ratio (instrumental parameter) of short-wave second-order spectrum to first-order spectrum measured beforehand. Spectrum-measurement experiments were carried out by VIS-NIR spectrometers (0.36 - 1.0m). That the spectrum data got via calculation-separation coincide with those got via cut-off filter indicates that spectrum can be obtained by processing the measured date without filters in whole operating wavelength.   Thermal stability of the new soliton transported bio-energy under influence of fluctuations of characteristic parameters at biological temperature in the protein molecules 期刊论文  OAI收割 International Journal of Modern Physics B, 2005, 卷号: 19, 期号: 32, 页码: 4677-4699 X. F. Pang; H. W. Zhang; J. F. Yu; Y. U. Luo 收藏  |  浏览/下载：31/0  |  提交时间：2012/04/14 protein molecules  soliton  bio-energy transport  thermal stability  fluctuation  characteristic parameter  davydov soliton  living systems  finite-temperature  improved model  quantum  dynamics  lifetime  spectra  excitation  crystals   Effect of Ce3+ on spectral characteristic of D1/D2/Cytb559 complex from spinach 期刊论文  OAI收割 SCIENCE IN CHINA SERIES B-CHEMISTRY, 2003, 卷号: 46, 期号: 1, 页码: #REF! 作者:  Hong, FS;  Wang, XF;  Liu, C;  Su, GX;  Song, WP 收藏  |  浏览/下载：31/0  |  提交时间：2016/04/11 Ce3+  spinach  D1/D2/Cytb559 complex  photosynthesis  spectra characteristic   Effect of Ce~(3+) on spectral characteristic of D1/D2/Cytb559 complex from spinach 期刊论文  OAI收割 Science in China(Series B), 2003, 期号: 1, 页码: 42-50 作者:  Hong FS(洪法水);  Wang XF(王雪峰);  Liu C(刘超);  Su GX(苏国兴);  Song WP(宋卫平) 收藏  |  浏览/下载：8/0  |  提交时间：2015/12/25 Ce3+  spinach  D1/D2/Cytb559 complex  photosynthesis  spectra characteristic.