搜索结果: 121-135 共查到“知识库 太阳物理学”相关记录183条 . 查询时间(1.515 秒)
Why Study the Sun?
Sun flares prominences coronal mass ejectioncoronal holes helioseismology
2009/5/7
In this presentation we briefly describe the Sun through large number of illustrations and pictures of the Sun taken from early times to the present day space missions. The importance of the study of ...
Analysis of Enhanced Velocity Signals Observed during Solar Flares
Sun:oscillations Sun:sunspots Sun:flares
2009/5/7
Solar flares are known to release a large amount of energy. It
is believed that the flares can excite velocity oscillations in active regions.
We report here the changes in velocity signals in three...
Development of a Low-order Adaptive Optics System at Udaipur Solar Observatory
Sun: astronomical seeing adaptive optics solar telescopes solar imaging
2009/5/6
A low-order Adaptive Optics (AO) system is being developed
at the Udaipur Solar Observatory and we present in this paper the
status of the project, which includes the image stabilization system and
...
Next Generation UV Coronagraph Instrumentation for Solar Cycle-24
Solar instrumentation solar spectroscopy solar corona solar wind coronal mass ejections
2009/5/6
Ultraviolet coronagraph observations of the extended solar
corona (defined here as 1.5 to 10 solar radii from Sun-center) have become a
powerful tool for obtaining detailed empirical descriptions o...
Relationship between Interplanetary (IP) Parameters and Geomagnetic Indices during IP Shock Events of 2005
IP parameters IP shocks solar–terrestrial relationship
2009/5/6
In the present study, we investigate the possible relationship
of IP parameters of solar wind and interplanetary magnetic field with
ground-based geomagnetic indices. To carry out the study, we take...
Effect of Magnetic Activity on Ionospheric Time Delay at Low Latitude
Ionospheric time delay scintillation TEC geomagnetic storm
2009/5/6
The purpose of this work is to investigate the effect of magnetic
activity on ionospheric time delay at low latitude Station Bhopal
(geom. lat. 23.2◦N, geom. long. 77.6◦E) using dual fre...
Solar and Interplanetary Disturbances causing Moderate Geomagnetic Storms
Solar flares active prominences and disappearing filaments sunspot numbers geomagnetic storms
2009/5/6
The effect of solar and interplanetary disturbances on geomagnetospheric
conditions leading to 121 moderate geomagnetic storms
(MGS) have been investigated using the neutron monitor, solar geophysic...
Multi-parametric Effect of Solar Activity on Cosmic Rays
Sun solar parameters cosmic ray modulation running multiple correlation method
2009/5/6
The long-term modulation of cosmic ray intensity (CRI) by
different solar activity (SA) parameters and an inverse correlation between
individual SA parameter and CRI is well known. Earlier, it has b...
Role of Magnetic Carpet in Coronal Heating
Sun corona magnetic field magnetic carpet reconnection
2009/5/6
One of the fundamental questions in solar physics is how
the solar corona maintains its high temperature of several million Kelvin
above photosphere with a temperature of 6000 K.
Observations show...
We reinvestigate the problem of Hα intensity oscillations in
large flares, particularly those classified as X-class flares. We have used
high spatial and temporal resolution digital observations obt...
Numerical Simulations of Kinetic Alf ´v en Waves to Study Spectral Index in Solar Wind Turbulence and Particle Heating
Kinetic Alfv´ en wave: filamentation solar wind spectral index chaotic structure
2009/5/6
We present numerical simulations of the modified nonlinear
Schr¨odinger equation satisfied by kinetic Alfv´en waves (KAWs) leading
to the formation of magnetic filaments at different times. Th...
The Solar Wind：Our Current Understanding and How We Got Here
Solar wind coronal holes solar corona cyclotron resonance MHD waves
2009/5/6
In the original theory for the solar wind, the electron pressure
gradient was the principal accelerating force. This was soon recognized
to be insufficient to drive the high-speed streams. Subsequen...
Analysis of Ion Charge States in Solar Wind and CMEs
Solar wind and CMEs Fe ion charge states dielectronic recombination
2009/5/6
We discuss needs in dielectronic recombination data motivated
by recent work directed at a quantitative understanding of ion charge
states of various elements observed in situ in the solar wind and ...
Helioseismic Ring Analysis of CME Source Regions
Sun coronal mass ejections oscillations magnetic field
2009/5/6
We apply the ring diagram technique to source regions of
halo coronal mass ejections (CMEs) to study changes in acoustic mode
parameters before, during, and after the onset of CMEs.We find that CME
...
UV Diagnostics for the Energy Budget of Flares and CMEs
Sun: corona flares coronal mass ejections
2009/5/6
Solar flares and coronal mass ejections convert large amounts
of magnetic free energy into thermal, kinetic and potential energies, and
into energy of non-thermal particles. The partitioning among t...