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RFI Test Observations at a Candidate Ska Site in China

[期刊论文] EXP ASTRON

Radio frequency interference (RFI) test observations were carried out at one of the candidate Square Kilometre......

  • 关键词:
  • antenna, measurement, radio frequency interference, radio spectrum, telescope site

Modeling of A Feed Support System for Fast

[期刊论文] EXP ASTRON

As an engineering demonstrator for SKA, the Five-hundred-meter Aperture Spherical Telescope (FAST) is proposed......

  • 关键词:
  • cable, feed support, large telescope, SKA, Stewart stabilizer

500m球面反射面射电望远镜FAST

[期刊论文] 中国科学(G辑)

500m口径球反射面射电望远镜FAST将是国际上最大、最灵敏的射电天文望远镜.利用贵州喀斯特洼坑作为台址,在洼坑内铺设500m球冠状反射面,通过主动控制形成抛物面以汇聚电磁波,采用轻型钢索拖动并联机器人实现望远镜的指向跟......

  • 关键词:
  • 射电天文; 射电望远镜; 主动反射面

Refractive Focusing by Interstellar Clouds and the Rapid Polarization Angle Swing in QSO 1150+812

[期刊论文] Chinese Journal of Astronomy and Astrophysics

A very rapid polarization position angle swing of ~180° (with a time scale of ~6 hours) observed at 2 cm in QS......

  • 关键词:
  • radio continuum: galaxies – galaxies: compact – polarization – scattering – quasars: individual: 1150+812

High Brightness Temperatures in IDV Sources

[期刊论文] Chinese Journal of Astronomy and Astrophysics

High brightness temperatures are a characteristic feature of IntraDay Variability (IDV) of extragalactic radio......

  • 关键词:
  • radio continuum: galaxies – Quasars: individual: PKS 0405–385

Pulsar Observations with radio telescope FAST

[期刊论文] Chinese Journal of Astronomy and Astrophysics

FAST, Five hundred meter Aperture Spherical Telescope, is the Chinese effort for the international project SKA......

  • 关键词:
  • techniques: radio astronomy — pulsars: general techniques: radio astronomy

Radio telescope FAST - A sensitive tool for SETI

[期刊论文] ORIGINS OF LIFE AND EVOLUTION OF THE BIOSPHERE

  • 关键词:

500口径球面射电望远镜馈源二次精调平台构型参数综合设计

[期刊论文] 中国机械工程

采用6-TPS Stewart平台作为500m口径球面射电望远镜馈源的二次精调平台,针对500m口径球面射电望远镜观测时对精调平台设计的特殊要求,基于极限姿态和次最优局部灵巧度,研究了兼顾工作空间、灵巧度以及避免构件间干......

  • 关键词:
  • 500m口径球面射电望远镜; 精调平台; 工作空间; 灵巧度; 构型参数

Refractive Focusing of Interstellar

[期刊论文] ChJAA

Intraday variations of compact extragalactic radio sources in flux density and polarization are generally inte......

  • 关键词:
  • radio continuum : galaxies; polarization : intraday variability; scattering : refractive focusing; quasars : individual : QSO 0917+624

A Possible Periodicity in the Radio Light Curves of 3C 454.3

[期刊论文] ChJAA

During the period 1966.5-2006.2 the 15 GHz and 8 GHz light curves of 3C 454.3 (z = 0.859) show a quasi-periodi......

  • 关键词:
  • radio continuum : galaxies; Quasars : individual : 3C 454.3

FAST二次精调实验平台的伺服系统设计

[期刊论文] 科学技术与工程

基于Stewart平台的馈源接收机位姿主动减振定位机构的控制,是500m口径球面射电天文望远镜(FAST)项目实现的关键。以大射电望远镜馈源二次精调平台为基础,研究将Stewart平台机构作为精调平台实现对大幅度的多自由......

  • 关键词:
  • 大射电望远镜; Stewart平台; PMAC卡; PID参数整定; 开放伺服;

The correlations between the spin frequencies and kHz QPOs of neutron in LMXBs

[期刊论文] ASTRONOMY & ASTROPHYSICS

Aims. We studied the correlations between spin frequencies and kilohertz quasi-periodic oscillations ( kHz QPO......

  • 关键词:
  • X-rays : binaries; accretion, accretion disks; stars : neutron

Does submillisecond pulsar XTE J1739-285 contain a weak magnetic neutron star or quark star?

[期刊论文] Publications of the Astronomical Society of the Pacific

The possible detection of the fastest spinning nuclear-powered pulsar XTE J1739-285, of frequency 1122 Hz (0.8......

  • 关键词:
  • X-RAY BINARIES; QUASI-PERIODIC OSCILLATIONS; STRANGE STARS; MILLISECOND PULSARS; RADIO PULSARS; GENERAL-RELATIVITY; SPIN FREQUENCY; 4U 1820-30; 1122 HZ; MASS

Magnetic field and spin frequency of X-ray neutron star associated with the kHz QPOs

[期刊论文] Advance in Space Research

By means of the accretion induced magnetic field evolution model of neutron star in low mass X-ray binary, the......

  • 关键词:
  • magnetic field of neutron star; spin frequency of pulsar; kHz QPOs; binary system

General Description of Dirac Spin-Rotation Effect with Relativistic Factor

[期刊论文] INTERNATIONAL JOURNAL OF MODERN PHYSICS D

The Mashhoon rotation-spin coupling is studied by means of the parallelism description of general relativity. ......

  • 关键词:
  • torsion; parallelism; rotation-spin(1/2); non-inertial effect
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