搜索结果: 16-30 共查到“理学 sun”相关记录90条 . 查询时间(0.043 秒)
Spotlighting the sun
Spotlighting the sun astronomy A partial solar eclipse
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2014/10/30
Astronomers with the National Science Foundation (NSF)-funded National Optical Astronomy Observatory (NOAO) captured pictures not only of Thursday's partial solar eclipse, but also of the "monster" si...
Detecting neutrinos, physicists look into the heart of the sun（图）
physicists sun neutrinos
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2014/9/1
AMHERST, Mass. – Using one of the most sensitive neutrino detectors on the planet, an international team of physicists including Andrea Pocar, Laura Cadonati and doctoral student Keith Otis at the Uni...
Analyzing sun-like stars that eat Earth-like planets
Analyzing sun-like stars eat Earth-like planets
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2014/6/12
Some Sun-like stars are ‘Earth-eaters.’ During their development they ingest large amounts of the rocky material from which ‘terrestrial’ planets like Earth, Mars and Venus are made.
中国科学院生化与细胞所揭示跨核膜复合物SUN-KASH作为细胞质与细胞核之间分子桥梁的组装与调控机制
核膜 机械特性 SUN结构
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2012/9/7
国际学术期刊Cell Research近日以封面文章形式在线发表了中科院上海生命科学研究院生化与细胞所周兆才研究组的最新研究成果，报道了跨核膜蛋白质复合物SUN-KASH作为细胞质与细胞核之间分子桥梁在细胞机械力传递过程中的结构与功能机制。
On using the beaming effect to measure spin-orbit alignment in stellar binaries with Sun-like components
measure spin-orbit alignment stellar binaries Sun-like components
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2011/10/13
The beaming effect (aka Doppler boosting) induces a variation in the observed flux of a luminous object, following its observed radial velocity variation. We describe a photometric signal induced by t...
Constraints on dark matter models from a Fermi LAT search for high-energy cosmic-ray electrons from the Sun
Cosmic Rays Electrons Fermi Sun
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2011/10/13
During its first year of data taking, the Large Area Telescope (LAT) onboard the Fermi Gamma-Ray Space Telescope has collected a large sample of high-energy cosmic-ray electrons and positrons (CREs). ...
Enhanced Sensitivity to Dark Matter Self-annihilations in the Sun using Neutrino Spectral Information
Dark Matter, Solar WIMPs, WIMP-nucleon scattering cross section, Neutrino Astronomy
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2011/10/10
Self-annihilating dark matter gravitationally captured by the Sun could yield observable neutrino signals at current and next generation neutrino detectors. By exploiting such signals, neutrino detect...
Mass Loss, Destruction and Detection of Sun-grazing and -impacting Cometary Nuclei
comet sun impact sun-grazing radiation collisions
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2011/9/30
Incoming sun-grazing comets almost never re-emerge, but no final destruction event has ever been observed, nor sun-impactor destruction theory developed. We seek analytic models of comet nucleus destr...
Measuring the Earth-Sun distance during a lunar eclipse
Measuring Earth-Sun distance lunar eclipse
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2011/9/28
The classical method for measure the Earth-Sun distance is due to Aristarchus and it is based upon the measure of the angle Moon-Earth-Sun when the Moon is exactly in quadrature. Such an angle is only...
NASA spies storm stretching across the Sun（图）
NASA storm stretching the Sun
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2011/1/21
New findings from NASA's Solar Dynamics Observatory (SDO) reveal that the Sun's surface is an even more complicated web of physical and magnetic processes than previously thought. The finding was unve...
The brightness of the magnetic field in the quiet Sun
the magnetic field the quiet Sun
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2011/1/10
Context: In addition to the `facular' brightening of active regions, the quiet Sun also contains a small scale magnetic field with associated brightenings in continuum radiation. Aims: To measure the ...
HD 46375: seismic and spectropolarimetric analysis of a young Sun hosting a Saturn-like planet
seismic spectropolarimetric analysis Saturn-like planet
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2010/11/15
Context. HD 46375 is known to host a Saturn-like exoplanet orbiting at 0.04 AU from its host star. Stellar light reflected by the planet was tentatively identified in the 34-day CoRoT run acquired in ...
Honeycomb windows that could harvest the Sun（图）
Honeycomb windows the Sun
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2010/11/30
A materials science breakthrough in the US and Taiwan could lead to a new type of window that can harness the power of the Sun. The newly created transparent material can efficiently capture photons t...
On the stability of the secular evolution of the planar Sun-Jupiter-Saturn-Uranus system
Mathematical Physics (math-ph) Chaotic Dynamics (nlin.CD)
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2010/11/10
We investigate the long time stability of the Sun--Jupiter--Saturn--Uranus system by considering the planar, secular model. Our method may be considered as an extension of Lagrange's theory for the se...
Detection of Supergranulation Alignment in Polar Regions of the Sun by Helioseismology
convection — Sun helioseismology
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2010/11/10
We report on a new phenomenon of ‘alignment’ of supergranulation cells in the polar regions of the Sun. Recent high-resolution datasets obtained by the Solar Optical Telescope (SOT) onboard the Hinode...