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851.
A. A. Vostrukhin D. V. Golovin A. S. Kozyrev M. L. Litvak A. V. Malakhov I. G. Mitrofanov M. I. Mokrousov T. M. Tomilina Yu. I. Bobrovnitskiy A. S. Grebennikov M. M. Laktionova B. N. Bakhtin A. V. Sotov 《Cosmic Research》2018,56(3):208-212
The results of testing a number of space-based detectors that contain PMTs or high-voltage electrodes for the noise from the microphonics that occurs in the signal path due to external mechanical action have been presented. A method for the vibration isolation of instruments aboard a spacecraft has been proposed to reduce their responsivity to vibrations. 相似文献
852.
The equations of the mathematical model are solved in terms of special functions. The results for the design scheme of the aircraft forebody are obtained with a guaranteed accuracy by the stable method of functional normalization. 相似文献
853.
Space Science Reviews - The NRL ionosphere/plasmasphere model SAMI3 has been modified to support the NASA ICON mission. Specifically, SAMI3_ICON has been modified to import the thermospheric... 相似文献
854.
855.
Lawrence M. Widrow Dongsu Ryu Dominik R. G. Schleicher Kandaswamy Subramanian Christos G. Tsagas Rudolf A. Treumann 《Space Science Reviews》2012,166(1-4):37-70
We review current ideas on the origin of galactic and extragalactic magnetic fields. We begin by summarizing observations of magnetic fields at cosmological redshifts and on cosmological scales. These observations translate into constraints on the strength and scale magnetic fields must have during the early stages of galaxy formation in order to seed the galactic dynamo. We examine mechanisms for the generation of magnetic fields that operate prior during inflation and during subsequent phase transitions such as electroweak symmetry breaking and the quark–hadron phase transition. The implications of strong primordial magnetic fields for the reionization epoch as well as the first generation of stars are discussed in detail. The exotic, early-Universe mechanisms are contrasted with astrophysical processes that generate fields after recombination. For example, a?Biermann-type battery can operate in a proto-galaxy during the early stages of structure formation. Moreover, magnetic fields in either an early generation of stars or active galactic nuclei can be dispersed into the intergalactic medium. 相似文献
856.
857.
The stress-strain state of thin-walled aircraft structures such as a wing or fuselage made of composite materials is determined
based on the beam theory. The laminated skin is orthotropic. The solution was obtained without using the centroidal principal
section axes and subdividing the problem in shear and torsion. A calculation variant with skin discretization along the section
contour was studied. 相似文献
858.
859.
O. Troshichev P. Stauning K. Liou G. Reeves 《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》2011
The relationships between the magnetic disturbance onsets, aurora dynamics and particles injections at the geostationary orbit have been analyzed in detail for 25 sawtooth substorms. It is shown that inconsistency between the above signatures of the substorms onset is typical of the powerful sawtooth substorms, unlike the isolated (“classical”) magnetospheric substorms. The distinguishing feature of the aurora in case of saw-tooth substorms is permanently high level of auroral activity irrespective of the magnetic disturbance onsets and the double oval structure of the aurora display. The close relationship between the aurora behavior and the particle injections at geostationary orbit is also broken. The conclusion is made, that the classical concept of the substorm development, put forward by Akasofu (1964) for isolated substorms, is not workable in cases of the sawtooth disturbances, when the powerful solar wind energy pumping into the magnetosphere provides a permanent powerful aurora particle precipitation into the auroral zone. 相似文献
860.
W.D. Apel J.C. Arteaga L. Bähren K. Bekk M. Bertaina P.L. Biermann J. Blümer H. Bozdog I.M. Brancus P. Buchholz S. Buitink E. Cantoni A. Chiavassa K. Daumiller V. de Souza F. Di Pierro P. Doll M. Ender R. Engel H. Falcke M. Finger D. Fuhrmann H. Gemmeke C. Grupen A. Haungs D. Heck J.R. Hörandel A. Horneffer D. Huber T. Huege P.G. Isar K.-H. Kampert D. Kang O. Krömer J. Kuijpers K. Link P. Łuczak M. Ludwig H.J. Mathes M. Melissas C. Morello S. Nehls J. Oehlschläger N. Palmieri T. Pierog J. Rautenberg H. Rebel M. Roth C. Rühle A. Saftoiu 《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》2011