搜索结果: 16-30 共查到“知识库 太阳物理学”相关记录183条 . 查询时间(3.734 秒)
Self-bound models of compact stars and recent mass-radius measurements
Self-bound models compact stars recent mass-radius measurements
2011/10/20
The exact composition of a specific class of compact stars, historically referred to as "neutron stars", is still quite unknown. Possibilities ranging from hadronic to quark degrees of freedom, includ...
Constraints on dark matter models from a Fermi LAT search for high-energy cosmic-ray electrons from the Sun
Cosmic Rays Electrons Fermi Sun
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). ...
Height structure of X-ray, EUV and white-light emission in a solar flare
Sun: fl ares – Sun: X-rays, gamma-rays – Sun: radio radiation – Sun: UV radiation – Acceleration of particles
2011/10/11
The bulk of solar flare emission originates from very compact sources located in the lower solar atmosphere and seen in various wavelength ranges: near optical, UV, EUV, soft and hard X-rays, and gamm...
Synthetic Spectra of Radio, Millimeter, Sub-millimeter and Infrared Regimes with NLTE approximationred Regimes with NLTE approximation
Synthetic Spectra Radio Millimeter Sub-millimeter
2011/10/10
We use a numerical code called PAKALMPI to compute synthetic spectra of the solar emission in quiet conditions at millimeter, sub-millimeter and infrared wavelengths. PAKALMPI solves the radiative tra...
Modeling of differential rotation in rapidly rotating solar-type stars
Modeling differential rotation rapidly rotating solar-type stars
2011/10/9
We investigate differential rotation in rapidly rotating solar-type stars by means of an axisymmetric mean field model that was previously applied to the sun. This allows us to calculate the latitudin...
We show that simple 2 and 3-layer flux-transport dynamos, when forced at the top by a poloidal source term, can produce a widely varying amplitude of toroidal field at the bottom, depending on how clo...
Solar Magnetic Fields
Solar Magnetic Fields
2011/9/28
This review provides an introduction to the generation and evolution of the Sun's magnetic field, summarising both observational evidence and theoretical models. The eleven year solar cycle, which is ...
Analysis of Seeing-Induced Polarization Cross-Talk and Modulation Scheme Performance
Analysis Seeing-Induced Polarization Cross-Talk Modulation Scheme Performance
2011/9/27
We analyze the generation of polarization cross-talk in Stokes polarimeters by atmospheric seeing, and its effects on the noise statistics of spectropolarimetric measurements for both single-beam and ...
Can overturning motions in penumbral filaments be detected?
overturning motions penumbral filaments detected
2011/9/27
Numerical simulations indicate that the filamentation of sunspot penumbrae and the associated systematic outflow (the Evershed effect) are due to convectively driven fluid motions constrained by the i...
The Influence of Solar Activity on the Rainfall over India: Cycle-to-Cycle Variations
Solar activity Indian rainfall galactic cosmic rays volcanic or interstellar dust
2010/9/17
We use 130 years data for studying correlative effects due to solar cycle and activity phenomena on the occurrence of rainfall over India. For the period of different solar cycles, we compute the corr...
Magnetosonic Waveguide Model of Solar Wind Flow Tubes
Solar wind MHD waves magnetic flux tubes
2010/9/17
We consider solar wind flow tubes as a magnetosonic waveguide.Assuming a symmetric expansion in edges of slab-modelled waveguide,we study the propagation characteristics of magnetosonic wave in the so...
Study of a Large Helical Eruptive Prominence Associated with Double CME on 21 April 2001
Sun: prominence Coronal Mass Ejection
2010/9/17
Here we present a preliminary analysis of a helical eruptive prominence at the east limb of the Sun on 21 April 2001. Unusually this eruption is associated with a double CME. We have tried to study th...
The Extreme Solar Activity during October–November 2003
Sunspots rotation flare extreme activity
2010/9/17
The positional measurements of sunspots from the Kodaikanal Observatory and Solar Geophysical data are used to study the association between occurrence of the abnormal activities of big sunspot groups...
Observational Searches for Chromospheric g-Mode Oscillations from CaII H-Line Observations
Solar chromosphere CaII H-line oscillations chromospheric g-mode
2010/9/17
We have used a high spatial and temporal resolution of long time sequence of spectra in CaII H-line obtained at theVacuum Tower Telescope (VTT) of the Sacramento Peak Observatory on a quiet region at ...
Spatial Damping of Linear Compressional Magnetoacoustic Waves in Quiescent Prominences
Sun: prominences oscillations magnetohydrodynamics radiation thermal
2010/9/17
We study the spatial damping of magnetoacoustic waves in an unbounded quiescent prominence invoking the technique of MHD seismology. We consider Newtonian radiation in the energy equation and derive a...