搜索结果: 1-13 共查到“实测天体物理学 SOLAR”相关记录13条 . 查询时间(0.25 秒)
Two Wide Planetary-Mass Companions to Solar-Type Stars in Upper Scorpius
brown dwarfs planetary systems Infrared planetary systems
2010/11/12
At wide separations, planetary-mass and brown dwarf companions to solar type stars occupy a
curious region of parameters space not obviously linked to binary star formation or solar-system scale plan...
New Interactive Solar Flare Modeling and Advanced Radio Diagnostics Tools
corona Sun magnetic fields radiation mechanisms non-thermal
2010/11/9
The coming years will see routine use of solar data of unprecedented spatial and spectral resolution, time cadence, and completeness in the wavelength domain. To capitalize on
the soon to be availabl...
Constraints on the Cosmic-Ray Density Gradient beyond the Solar Circle from Fermi gamma-ray Observations of the Third Galactic Quadrant
cosmic rays – gamma rays ISM – ISM general
2010/11/10
We report an analysis of the interstellar-ray emission in the third Galactic quadrant measured
by the Fermi Large Area Telescope. The window encompassing the Galactic plane from longitude 210◦ ...
Differential rotation on the young solar analogue V889 Herculis
Solar and Stellar Astrophysics (astro-ph.SR)
2011/1/6
V889 Herculis is one of the brightest single early-G type stars, a young Sun, that is rotating fast enough (P_rot =1.337 days) for mapping its surface by Doppler Imaging. The 10 FOCES spectra collecte...
Determination of 3D Trajectories of Knots in Solar Prominences Using MSDP Data
Solar and Stellar Astrophysics (astro-ph.SR)
2011/1/5
In this paper we present a new method of restoration of the true thee-dimensional trajectories of the prominence knots based on ground-based observations taken with a single telescope, which is equipp...
First solar butterfly diagram from Schwabe's observations in 1825-1867
Solar and Stellar Astrophysics (astro-ph.SR)
2011/1/5
The original sunspot observations by Heinrich Samuel Schwabe of 1825-1867 were digitized and a first subset of spots was measured. In this initial project, we determined more than 14 000 sunspot posit...
Solar System Abundances of the Elements
Solar and Stellar Astrophysics (astro-ph.SR) Earth and Planetary Astrophysics (astro-ph.EP)
2011/1/4
Representative abundances of the chemical elements for use as a solar abundance standard in astronomical and planetary studies are summarized. Updated abundance tables for solar system abundances base...
Magnetic fields and the occurrence of flares and microflares are strongly concentrated near that portion (the Hale boundary) in each solar hemisphere where the change in magnetic sector polarity is th...
Turbulent eddy-time-correlation in the solar convective zone
Solar and Stellar Astrophysics (astro-ph.SR)
2010/12/31
Theoretical modeling of the driving processes of solar-like oscillations is a powerful way of understanding the properties of the convective zones of solar-type stars. In this framework, the descripti...
Rotation of the Solar System planets and the origin of the Moon in the context of the tidal downsizing hypothesis
Earth and Planetary Astrophysics (astro-ph.EP)
2010/12/27
It has been proposed recently that the first step in the formation of both rocky and gas giant planets is dust sedimentation into a solid core inside a gas clump (giant planet embryo). The clumps are ...
External field effect of modified Newtonian dynamics in the Solar system
Cosmology and Extragalactic Astrophysics (astro-ph.CO) General Relativity and Quantum Cosmology (gr-qc)
2010/12/27
The Modified Newtonian Dynamics (MOND) has been formulated as a modification of the Poisson equation for the Newtonian gravitational field.
The barycentric motion of exoplanet host stars: tests of solar spin-orbit coupling
Earth and Planetary Astrophysics (astro-ph.EP)
2010/12/24
Empirical evidence suggests a tantalising but unproven link between various indicators of solar activity and the barycentric motion of the Sun. The latter is exemplified by transitions between regular...
Power Spectrum Analysis of Mount-Wilson Solar Diameter Measurements: Evidence for Solar Internal R-mode Oscillations
Solar and Stellar Astrophysics (astro-ph.SR)
2010/12/23
This article presents a power-spectrum analysis of 39,024 measurements of the solar diameter made at the Mount Wilson Observatory from 1968.670 to 1997.965. This power spectrum contains a number of ve...