Supported by the National Natural Science Foundation of China (Grant No. 40390150)
With energetic ion measurements on FAST satellite, the morphologic features of quiet-time ionospheric O+ ion upflowing at altitudes of 2000 to 4000 km are drawn out for the first time. The pre-noon cusp/cleft is the p...
The heliospheric basic quantities, particle and energy densities and flux densities undergo two kinds of solar cycle variation, i.e. the sunspot and the coronal cycle variation, the latter being characterized by the l...
The heliospheric quantities undergo two kinds of solar cycle variation near the earth’s orbit. The first one is the coronal-hale cycle variation that determines the output of mass, kinetic and thermal energies of sol...
For more than a decade, investigations of seismic gaps prior to large and moderate earthquakes have secured the attention of seismologists at home and abroad. At first, some seismologists proposed the concept of seism...
Sandage has given a two-color diagram with the color indices of 89 QSOs, 14 radio-quiet QSOs, 5 Seyfert nuclei and 12N-galaxies. In the diagram, the N-galaxies are clearly separated from the QSOs, but all other celest...