【摘 要】
：
Using the method recently developed by Gan et al. (200la, 2002), We investigate the time variation of the lower energy cutoff (Ec) of nonthermal electrons for t
【机 构】
：
National Astronomical Observatories
【基金项目】
：
科技部资助项目;国家自然科学基金
论文部分内容阅读
Using the method recently developed by Gan et al. (200la, 2002), We investigate the time variation of the lower energy cutoff (Ec) of nonthermal electrons for three BATSE/CGRO hard X-ray events. The result shows that Ec changes with time, from smaller before the peak flux, to larger at the peak, and then back to smaller after the peak. Such a variation of Ec, being a preliminary conclusion for the first time, should be checked in the future by using data with a higher energy resolution.
其他文献
Recently, a new decomposition of the (2+1)-dimensional Kadomtsev Petviashvili (KP) equation to a (1+1 )-dimensional Broer-Kaup (BK) equation and a (1+1)-dimensi
Consider any traveling wave solution of the Kuramoto-Sivashinsky equation that is asymptotic to a constant as x → +∞. The authors prove that it is nonlinearly
Manganese silicide MnSi2-x thin films have been prepared on n-type silicon substratesthrough solid phase reaction. The heterostructures were analyzed by X-ray d
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7
The objective of this paper is to consider the theory of regularity of systems of partial differential equations with Neumann boundary conditions. It complement
A new cembranoide deterpene was isolated from the soft coral Sinularia Tenella. The crystal and chemical structure of the title compound were determined by mean
Silicon containing materials have traditionally been used in microelectronic fabrication. Semiconductor devices often have one or more arrays of patterned inter
The changes in arachidonic acid (AA) and fatty acids profiles along the growth curve of Parietochloris incisa, a coccoid snow green alga, were studied in a 2.8
The crystal structure of the title compound [Na2(OH2)5]2+[C6H12N4H2]2-2+ [Mo7O24]6- · 4H2O, prepared from an aqueous solution of Na2MoO4·2H2O in the presence