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1.
The separation of motions into slow (precession) and fast (nutation) components in the problem of the entry of a spacecraft (SC) with a small asymmetry into the atmosphere is considered. For the separation of the slow and fast motions the method of integral manifolds is used together with the asymptotic method for singularly perturbed systems. The separation of motions allows one to isolate the frequencies that are functions of the slow variables of a system, and further on, after determining the integer relations between them, to construct the resonant curves (surfaces). This method gives the possibility to analyze the conditions of the emergence of resonances for a SC at angles of attack that are not small and when aerodynamic characteristics are nonlinear. Examples of the construction of resonant curves for a SC with typical aerodynamic characteristics are considered. 相似文献
2.
The local radiation belts of the Sun are defined as giant quasi-stationary coronal and heliospheric traps for solar cosmic rays. These traps are formed by loop magnetic fields, both solar and interplanetary. Using observational data, some experimental examples of the local radiation belts of the Sun are considered. The hypotheses on the origin of energetic particles in the outer heliosphere and on the local radiation belts of the Sun are discussed. 相似文献
3.
The enhancements of solar protons with an energy of more than 30 MeV, originating from flares in one active region and observed simultaneously aboard three spacecraft Vega-1, 2 and Prognoz-10 in July 1985, are analyzed and approximated in this work by using the reflection model [2]. The numerical values of several physical parameters (the parameters of distribution of solar cosmic ray (SCR) particles inside heliosphere traps, the coefficients of trap transparency) that are not observed by direct measurements are estimated. 相似文献
4.
N. A. Vlasova N. N. Pavlov M. I. Panasyuk N. N. Vedenkin T. A. Ivanova G. P. Lyubimov S. Ya. Reizman V. I. Tulupov 《Cosmic Research》2011,49(6):485-499
We compared fluxes of the 1–100 MeV solar energetic particles (SEP) measured in the interplanetary medium (ACE) and in the magnetosphere (Universitetsky-Tatiana, POES—in polar caps, and GOES-11—at geosynchronous orbit) during several SEP events of 2005–2006. Peak intensities of the SEP fluxes inside and outside the
magnetosphere were compared for each event. It is shown that observed inside-outside difference depends mainly on direction
of interplanetary magnetic field (IMF), on degree of the SEP anisotropy (pitch-angle distribution) in IMF, and on distance
of the dayside magnetopause from the Earth. 相似文献
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6.
V. V. Lyubimov 《Russian Aeronautics (Iz VUZ)》2009,52(2):172-175
A disturbed rotational orbital motion of an asymmetrical satellite with a strong magnet in the geomagnetic field is considered. It is shown that operating disturbances result in appearing of non-resonant phenomena in the satellite rotation caused by resonance effects. 相似文献
7.
G. P. Lyubimov 《Cosmic Research》2006,44(2):111-127
Some morphological features of solar magnetic fields in the chromosphere and corona are considered based on studying various observational data. These data are compared to the results of observation of the solar wind and interplanetary magnetic field, as well as to the data on fluxes of solar cosmic rays. New specific features are found in the solar wind structure, and new additional indications of sources of the solar wind are obtained. The properties of the active regions and coronal holes are considered. A model of the ascending stream-like plasma flow is suggested. It flows around the discrete arched magnetic field tubes in the solar atmosphere and stretches them out into interplanetary space. 相似文献
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9.
An intensity time-profile of the hard X-ray emission in two cores of a small impulsive solar flare is analyzed. The emission in the cores proved to evolve in the opposite phases. The phases of growth and decay are also shown to be modulated by the slower oscillatory variations. It is suggested that acceleration processes may be oscillating and a collapsing acceleration process may occur above and below the photosphere. 相似文献
10.
G. P. Lyubimov N. A. Vlasova V. I. Tulupov E. A. Chuchkov B. Ya. Shcherbovsky S. I. Ermakov 《Cosmic Research》2011,49(6):477-484
Results of the analysis of specific features of solar activity, dynamics of solar cosmic ray fluxes, and state of the interplanetary
medium are presented for the period December 5–18, 2006. The data analysis is based on new model concepts on coronal and interplanetary
propagation of solar cosmic rays: partial capture into the magnetic field traps and oscillations at reflections from magnetic
mirrors. Some new hypotheses about possible relations of the features of the interplanetary medium with processes in the Earth’s
magnetosphere are put forward: the influence of the discrete interplanetary medium on processes in the Earth’s magnetosphere
does exist always and, in this sense, it is a fundamental phenomenon; the discreteness of the inter-planetary medium can be
one of the causes of geomagnetic substorms. 相似文献