搜索结果: 1-15 共查到“物理学 Radio”相关记录17条 . 查询时间(0.171 秒)
Discovery reveals a reversible magnetic field around a fast radio burst for the first time
快速射电暴 可逆磁场 无线电波闪光
2023/5/15
An international team of researchers has revealed new evidence on the nature of mysterious fast radio bursts (FRBs) – objects in space that produce brief, intense flashes of radio waves from distant g...
In the quest for fusion energy, understanding how radio-frequency (RF) waves travel (or “propagate”) in the turbulent interior of a fusion furnace is crucial to maintaining an efficient, continuously ...
Statement on NSF and SpaceX Radio Spectrum Coordination Agreement
NSF SpaceX Radio Spectrum Coordination Agreement
2019/10/28
In late May, SpaceX launched its first 60 Starlink satellites into orbit. SpaceX plans to launch a much larger satellite constellation into low-Earth orbit with the goal of providing terrestrial inter...
PERFORMANCE ANALYSIS OF SISPELSAT MSK-DGNSS RADIO SIGNAL IN PENINSULAR MALAYSIA
Radio Beacon MSK SISPELSAT DGPS GPS GNSS
2018/11/8
The use of Global Navigation Satellite System (GNSS) has become essential in providing location based information and navigation. Due to low accuracy of navigation solution, differential technique suc...
Ground-based radio observations to probe the ozone content in the meteor region
meteor radar ozone
2015/9/16
Radar studies of the plasma irregularities produced by meteoroid ablation provide a powerful diagnostic probe of the Earth's atmosphere. This role is especially important as an inexpensive route for s...
Heating mechanisms in radio frequency driven ultracold plasmas
Heating mechanisms radio frequency driven ultracold plasmas
2012/2/28
Several mechanisms by which an external electromagnetic field influences the temperature of a plasma are studied analytically and specialized to the system of an ultracold plasma (UCP) driven by a uni...
A Novel Direct Detection Microwave Photonic Vector Modulation Scheme for Radio-Over-Fiber System
2011/11/22
This letter demonstrates the feasibility of a novel direct detection microwave photonic vector modulation scheme for the radio-over-fiber (RoF) system. Unlike the traditional double-sideband with opti...
On the application of radio frequency voltages to ion traps via helical resonators
radio frequency voltages ion traps helical resonators
2011/9/6
Ions confined using a Paul trap require a stable, high voltage and low noise radio frequency (RF) potential. We present a guide for the design and construction of a helical coil resonator for a desire...
Possible mechanism responsible for observed impurity outward flow under radio frequency heating
Possible mechanism radio frequency heating
2011/8/26
The effect of poloidal asymmetry of impurities on impurity transport driven by electrostatic turbulence in tokamak plasmas is analyzed. It is found that in
the presence of in-out asymmetric impurity ...
Ross Ice Shelf in situ radio-frequency ice attenuation
Ross Ice Shelf situ radio-frequency ice attenuation
2011/1/5
We have measured the in situ average electric field attenuation length hL i for
radio-frequency signals broadcast vertically through the Ross Ice Shelf. We chose a location,
Moore Embayment, south o...
A Multi-parameter Model for Radio Dichotomy
of Active Galactic Nuclei and Jets
accretion accretion disc black hole physics galaxies
2007/8/15
2006Vol.45No.2pp.379-384DOI:
A Multi-parameter Model for Radio Dichotomy
of Active Galactic Nuclei and Jets
YE Yong-Chun, WANG Ding-Xiong, and ZUO Xue-Qin
Department o...
期刊信息
篇名
Ray-Optical Prediction of Radio-Wave propagation in Tunnels Environments-Part 1Theory
语种
英文
撰写或编译
作者
Y.P.Zhang et al
第一作者单位
刊物名称
IEEE Trans .Antennas and Props
页面
1998,Vol.46,No9.pp1337-1345
出...
奖励信息
奖励名称
Determination of Optical Positions for 22 Southern Extragalactic Radio Sources
完成人
Tang Z.H.,Wang S.H.,Jin W.J
完成单位
推荐单位
授奖机构
授奖日期
2002年
月
日
奖励种类
Astron. J., 123: 125-131 (SCI)
奖励等级
奖励编号
相关项...
巡天和BL Lac天体的Radio-X-ray谱指数
星系 BL Lacertae天体 非热辐射
2012/11/14
经典和近些年的深度Blazar巡天都表明Radio-X-ray谱指数rαx与同步辐射峰频νpeak有很好的反相关性,但后者却显示出对给定的νpeak,rαx的散射很大,不能由νpeak来导出αrx,这个差异可能源自巡天策略.
Parallel Permittivity Elements for Radio Frequency Waves in Elongated D-shaped Tokamaks
Parallel Permittivity Elements Radio Frequency Waves Elongated D-shaped Tokamaks
2010/10/27
Parallel permittivity elements are derived for radio-frequency waves in an axisymmetric tokamak with D-shaped transverse cross-sections of the magnetic surfaces under arbitrary aspect ratio, arbitrary...