نتایج جستجو برای: electronic band structure
تعداد نتایج: 1850878 فیلتر نتایج به سال:
The electromc energy band structures of three interrnetalhc compounds have been
We present a first INTEGRAL observation of the 42 s transient X-ray pulsar EXO 2030+375 with IBIS/ISGRI. The source was detected during Cyg X-1 observations in December 2002. We analyzed observations during the outburst period from 9 to 21 December 2002 with a total exposure time of ∼770 kilosec. EXO 2030+375 was almost always detected during single ∼30 min exposures in the 18−45 energy bands. ...
In the present paper we consider Riemannian coverings (X, g) → (M, g) with residually finite covering group Γ and compact base space (M, g). In particular, we give two general procedures resulting in a family of deformed coverings (X, gε) → (M, gε) such that the spectrum of the Laplacian ∆(Xε,gε) has at least a prescribed finite number of spectral gaps provided ε is small enough. If Γ has a pos...
The radiation mechanisms contributing to formation of the nonthermal spectrum of the Crab Nebula, as well as the information that could be derived from future observations in different energy bands, are discussed.
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