Zobrazeno 1 - 4
of 4
pro vyhledávání: '"Hai-shou Yang"'
Publikováno v:
Solar Physics. 117:57-67
The theory of Yang, Chang, and Harvey (1983) is used to perform an analysis of the big active region AR 4711 of February, 1986, which produced many big and strong flares with proton events, SIDs and other significant geophysical effects. The various
Publikováno v:
Solar Physics. 84:139-151
It is pointed out that energy is stored when the force-free magnetic field in an active region departs from a potential field, the departure manifesting itself as a shear in the field. When the field untwists, energy will immediately be released to p
Publikováno v:
Chinese Astronomy and Astrophysics. 7:309-314
A statistical analysis of the X-ray properties of 247 quasars observed by the Einstein Observatory in the 0.5–4.5 kev band is made. The main results are as follows. Among the various magnitude and redshift groups of 1619 known quasars, the proporti
Publikováno v:
Chinese Astronomy and Astrophysics. 7:224-231
In this paper, a statistical study is made of the evolution of X-ray radiation of 273 objects (235 quasars and 38 type I Seyferts) in the 0.5–4.5 keV band observed from the Einstein Observatory. On the L x − z plot of these 273 objects, there see