搜索结果: 1-14 共查到“理学 precession”相关记录14条 . 查询时间(0.084 秒)
Detection of jet precession in the active nucleus of M81
Galaxies: Individual: M81 – galaxies: active – galaxies: jets – galaxies: nuclei – radio continuum: galaxies–radiation mechanisms: nonthermal – astrometry
2011/9/27
(See the complete and formatted abstract in the paper). We report on VLBI monitoring of the low-luminosity AGN (LLAGN) in M81 at 1.7, 2.3, 5, and 8.4GHz. These observations are phase-referenced to the...
Pulsar state switching, timing noise and free precession
dense matter – stars: neutron – stars: oscillations – stars: pulsars –stars: rotation
2011/10/10
Recent radio pulsar observations have shown that a number of pulsars display interesting long term periodicities in their spin-down rates. At least some of these pulsars also undergo sharp changes in ...
Accurate Measurement in the Field of the Earth of the General-Relativistic Precession of the LAGEOS II Pericenter and New Constraints on Non-Newtonian Gravity
General-Relativistic Pericenter Constraints on Non-Newtonian Gravity
2011/9/14
The pericenter shift of a binary system represents a suitable observable to test for possible deviations from the Newtonian inverse–square law in favor of new weak interactions between macroscopic obj...
When effective theories predict: the inevitability of Mercury's anomalous perihelion precession
Mercury’s Orbits in Newton’s Theory perturbations
2011/8/31
If the concepts underlying Effective Theory were appreciated from the earliest days of Newtonian gravity, Le Verrier’s announcement in 1845 of the
anomalous perihelion precession of Mercury would hav...
Spin precession and modulation in ballistic cylindrical nanowires due to the Rashba effect
Spin precession ballistic cylindrical nanowires
2010/11/24
The spin precession in a cylindrical semiconductor nanowire due to Rashba spin-orbit coupling has been investigated theoretically using an InAs nanowire containing a surface two-dimensional electron g...
Limit on Lorentz and CPT violation of the bound Neutron Using a Free Precession 3He/129Xe co-magnetometer
Lorentz CPT violation of the bound Neutron Free Precession 3He/129Xe co-magnetometer
2010/12/20
We report on the search for Lorentz violating sidereal variations of the frequency difference of colocated spin-species while the Earth and hence the laboratory reference frame rotates with respect to...
Voltage controlled spin precession in InAs quantum wells
Voltage controlled spin InAs quantum wells
2010/11/18
In this work we demonstrate that the device presented by Koo et al. [Science 325, 1515 (2009)]
in InAs quantum wells has indeed realized the Datta-Das spin-injected field effect transistor. The oscil...
Intermittent activity of radio sources. Accretion instabilities and jet precession
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2011/1/4
We consider the radiation pressure instability operating on short timescales 10^3 - 10^6 years in the accretion disk around a supermassive black hole as the origin of the intermittent activity of radi...
Individual and combined effects of ice sheets and precession on MIS-13 climate
ice sheets MIS-13 climate precession
2009/12/3
An Earth System Model of Intermediate Complexity is used to investigate the role of insolation and of the size of ice sheets on the regional and global climate of marine isotope stage (MIS) 13. The as...
On effect of precession-induced flows in the liquid core for early Earth's history
precession-induced flows liquid core early Earth's history
2009/11/9
Secondary and tertiary flow patterns seen in experiments simulating flow in the Earth's liquid core induced by luni-solar precession of the solid mantle (Vanyo et al., 1995) hint at the development of...
Equatorial insolation: from precession harmonics to eccentricity frequencies
equatorial insolation precession harmonics eccentricity frequency
2008/11/11
Since the paper by Hays et al. (1976), spectral analyses of climate proxy records provide substantial evidence that a fraction of the climatic variance is driven by insolation changes in the frequency...
Equatorial insolation：from precession harmonics to eccentricity frequencies
Equatorial insolation precession harmonics eccentricity frequencies
2008/11/11
Since the paper by Hays et al. (1976), spectral analyses of climate proxy records provide substantial evidence that a fraction of the climatic variance is driven by insolation changes in the frequency...
Perihelion Precession in Gravitational Field of Center
Mass with Electric Charge and Magnetic Moment
magnetic moment additional angle-movement
2007/8/15
2005Vol.43No.5pp.806-808DOI:
Perihelion Precession in Gravitational Field of Center
Mass with Electric Charge and Magnetic Moment
WANG Jun and WANG Yong-Jiu
Institute of...
Contribution of the Spin Current to the Damping of the Magnetic Moment Precession of Fe Impurities in Pd
Spin waves Giant magnetic moment Spin current
2010/9/25
We investigate the spin dynamics of a magnetic adatom on a non-magnetic surface with strong Stoner enhancement. We find a strong damping of the adatom’s magnetization precession and a large shift of t...