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901.
The vacuum polarization by massive scalar particles in the gravitational field of the Schwarzschild black hole is discussed. The explicit expression for the vacuum energy-momentum tensor is obtained in the case when the Compton length λm =?/mc of the massive particle is much less than the gravitational radius of a black hole. 相似文献
902.
Yu. N. Frolov 《Siberian Mathematical Journal》1973,14(4):579-587
903.
904.
It is shown that the usual characteristics of a black hole and of the physical fields produced by it obtain a unified geometrical meaning in the five-dimensional framework. Especially, it is demonstrated that a solution for a rotating black hole with electric and scalar charges can be generated by a boost transformation of the fifth coordinate from the Kerr solution. 相似文献
905.
B.N. Mukashev S.Z. Tokmoldin M.F. Tamendarov V.V. Frolov 《Physica B: Condensed Matter》1991,170(1-4):545-549
IR studies of interactions of atomic hydrogen with the A- and E-centres in silicon are performed. The MINDO/3 calculations of electronic structures and elastic constants of the hydrogen-related centres are also presented. 相似文献
906.
907.
908.
V. P. Uryadov G. G. Vertogradov V. G. Vertogradov A. A. Ponyatov V. L. Frolov 《Radiophysics and Quantum Electronics》2004,47(9):646-661
We present the results of radar observations of artificial ionospheric turbulence (AIT) created due to modification of the ionosphere by high-power radio emission from the Sura heating facility (Nizhny Novgorod region, Russia). Measurements were carried out in August 18–22, 2003 in the evening time (16:00–20:00 UT) with the use of over-the-horizon chirp HF radars on the Khabarovsk-Rostov-on-Don, Irkutsk-Rostov-on-Don, Inskip (England)-Rostov-on-Don paths, and also on the Moscow-Rostov-on-Don path for which reference signals of the standard-time RVM station were received. It is found that conditions for propagation of HF signals through the upper ionosphere at frequencies exceeding the maximum usable frequency for standard hop propagation through the F region were realized on the Irkutsk-Sura path in the presence of the powerful sporadic Es layer. The presence of such signals was revealed at the Rostov-on-Don station by receiving radio waves which escape from the altitudes of the ionospheric F region due to scattering by artificial small-scale magnetic-field-aligned irregularities. We studied the ionospheric effects of a magnetic storm occurring during the experiment by using the measurement data of the Doppler frequency shift of signals scattered by artificial ionospheric turbulence. It is shown that during a magnetic storm, the electric field and the drift velocity of irregularities at the altitudes of the F layer over the Sura facility reach values of 8.6 mV/m and 186 m/s, respectively, which are typical of the high-latitude ionosphere. We consider the relation between quasi-periodic oscillations of the Doppler frequency shift of the scattered signal and propagation of magnetohydrodynamic waves excited during the magnetospheric storm.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 47, No. 9, pp. 722–738, September, 2004. 相似文献
909.
Aggarwal MM Ahammed Z Angelis AL Antonenko V Arefiev V Astakhov V Avdeitchikov V Awes TC Baba PV Badyal SK Bathe S Batiounia B Bernier T Bhalla KB Bhatia VS Blume C Bucher D Büsching H Carlén L Chattopadhyay S Decowski MP Delagrange H Donni P Dutta Majumdar MR el Chenawi K Dubey AK Enosawa K Fokin S Frolov V Ganti MS Garpman S Gavrishchuk O Geurts FJ Ghosh TK Glasow R Guskov B Gustafsson HA Gutbrod HH Hrivnacova I Ippolitov M Kalechofsky H Karadjev K Karpio K Kolb BW Kosarev I Koutcheryaev I 《Physical review letters》2004,93(2):022301
Two-particle correlations of direct photons were measured in central 208Pb+208Pb collisions at 158A GeV. The invariant interferometric radii were extracted for 100相似文献
910.
The phenomenon of destruction of silica fiber cladding by the fiber fuse effect has been observed for the first time to the authors' knowledge. Experiments on the optical discharge propagation along a fiber were conducted with fibers of decreased cladding thickness. The destruction of fiber cladding led to expansion of the optical discharge plasma and to a decrease of its density. This resulted in the termination of optical discharge propagation. The section of a fiber with decreased cladding thickness can act as a safety device to halt damage propagation. 相似文献