Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Catalin Cucu-Dumitrescu"'
Publikováno v:
Astronomische Nachrichten. 327:304-308
We resume and consistently extend our previous researches concerning the Gylden-type problem (a two-body problem with time-dependent equivalent gravitational parameter). To approach most of the concrete astronomical situations to be modelled in this
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4946b7f56829b56dc38e591c74c18bd2
https://doi.org/10.1002/asna.200510537
https://doi.org/10.1002/asna.200510537
Publikováno v:
Astronomische Nachrichten. 326:356-361
We generalize the well-known Hill's circular restricted three-body problem by assuming that the primary generates a Schwarzschild-type field of the form U = A/r + B/r3. The term in B influences the particle, but not the far secondary. Many concrete a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::04759ae71e90c8b18af07361cf32a72a
https://doi.org/10.1002/asna.200410353
https://doi.org/10.1002/asna.200410353
Autor:
Dan Şelaru, Catalin Cucu-Dumitrescu
Publikováno v:
Celestial Mechanics and Dynamical Astronomy. 69:255-270
A particular multi-angle averaging theorem for systems admitting a finite Fourier expansion of the field is presented, together with its application to the problem of motion around an oblate planet (the J2 problem), in harmonic oscillator formulation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::09f0882fe8a1e9ff566f5fc369d1f910
https://doi.org/10.1023/a:1008202825698
https://doi.org/10.1023/a:1008202825698
Autor:
Dan Şelaru, Catalin Cucu-Dumitrescu
Publikováno v:
Astrophysics and Space Science. 250:93-107
In the Gylden problem, the case of slowly changing equivalent gravitational parameter (e.g.p.) is studied. Assuming the following law for the variation of the e.g.p.: µ (t) = µ0+ eµ (et), e< µ0, we obtained a) a O(e4 T4)-approximation of the solu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3e7480c57a6e01bb447606962b41769c
https://doi.org/10.1023/a:1000465408709
https://doi.org/10.1023/a:1000465408709
Autor:
Dan Şelaru, Catalin Cucu-Dumitrescu
Publikováno v:
Celestial mechanics and dynamical astronomy. 61:333-346
This study presents a method of obtaining asymptotic approximations for motions near a Lagrange point in the planar, elliptic, restricted three-body problem by using a von Zeipel-type method. The calculations are carried out for a second-order escape
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f204e25f0186ca124feb19601c1f937e
https://doi.org/10.1007/bf00049514
https://doi.org/10.1007/bf00049514
Publikováno v:
2012 9th International Conference on Communications (COMM).
SAR scenes are different from optical satellite images, with a strange look for the non-specialists. The objects from the ground are sometimes difficult to be told apart, even by a trained eye. A well known trademark of the SAR scenes is the noisy li
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6ddcfa3b845ea44ce582efae349a7e34
https://doi.org/10.1109/iccomm.2012.6262561
https://doi.org/10.1109/iccomm.2012.6262561
Publikováno v:
AIP Conference Proceedings.
We present some analytical and numerical results for the resonant Gylden‐type problem and identify some astrophysical situations for which this model can be useful. For small‐amplitude periodic variation, we study the behavior of the system in th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f813ade99ab347c80ba6d41bd9dd0a00
https://doi.org/10.1063/1.2720416
https://doi.org/10.1063/1.2720416
Publikováno v:
Journal of Numerical Analysis and Approximation Theory, Vol 24, Iss 1 (1995)
Not available.
Externí odkaz:
https://doaj.org/article/99ac3c5958304dbab68697d5b6a15b14