Zobrazeno 1 - 10
of 1 720
pro vyhledávání: 'Gales, Catalin'
Publikováno v:
A&A 645, A63 (2021)
We study the dynamics of co-orbital dust in the inner solar system, i.e. the role of the solar radiation pressure, Poynting-Robertson effect, solar wind, and the interplanetary magnetic field on the location, width and stability of resonant motion of
Externí odkaz:
http://arxiv.org/abs/2012.04766
We study the presence of resonances in the region of space around the Earth. We consider a massless body (e.g, a dust particle or a small space debris) subject to different forces: the gravitational attraction of the geopotential, the effects of Sun
Externí odkaz:
http://arxiv.org/abs/1912.04593
Autor:
Lhotka, Christoph, Gales, Catalin
Publikováno v:
Celest Mech Dyn Astr 131: 49 (2019)
We investigate the dynamics of charged dust close to outer mean-motion resonances with planet Jupiter. The importance of the interplanetary magnetic field on the orbital evolution of dust is clearly demonstrated. New dynamical phenomena are found tha
Externí odkaz:
http://arxiv.org/abs/1911.02778
We consider a restricted four-body problem with a precise hierarchy between the bodies: two point-mass bigger bodies, a smaller one with oblate shape, and an infinitesimal body in the neighborhood of the oblate body. The three heavy bodies are assume
Externí odkaz:
http://arxiv.org/abs/1812.10852
Akademický článek
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Autor:
Celletti, Alessandra, Galeş, Cătălin
The nearby space surrounding the Earth is densely populated by artificial satellites and instruments, whose orbits are distributed within the Low-Earth-Orbit region (LEO), ranging between 90 and 2 000 $km$ of altitude. As a consequence of collisions
Externí odkaz:
http://arxiv.org/abs/1710.02519
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-12 (2022)
Abstract This paper demonstrates the capabilities of convolutional neural networks (CNNs) at classifying types of motion starting from time series, without any prior knowledge of the underlying dynamics. The paper applies different forms of deep lear
Externí odkaz:
https://doaj.org/article/e9096196b3ea4016999594fe2230fc8d
Autor:
Celletti, Alessandra, Efthymiopoulos, Christos, Gachet, Fabien, Gales, Catalin, Pucacco, Giuseppe
The increasing threat raised by space debris led to the development of different mathematical models and approaches to investigate the dynamics of small particles orbiting around the Earth. Such models and methods strongly depend on the altitude of t
Externí odkaz:
http://arxiv.org/abs/1612.08849
We analyze the combined effect of Poynting-Robertson and solar wind drag on space debris. We derive a model within Cartesian, Gaussian and Hamiltonian frameworks. We focus on the geosynchronous resonance, although the results can be easily generalize
Externí odkaz:
http://arxiv.org/abs/1605.06965
Autor:
Melanie MY Chan, Omid Sadeghi-Alavijeh, Filipa M Lopes, Alina C Hilger, Horia C Stanescu, Catalin D Voinescu, Glenda M Beaman, William G Newman, Marcin Zaniew, Stefanie Weber, Yee Mang Ho, John O Connolly, Dan Wood, Carlo Maj, Alexander Stuckey, Athanasios Kousathanas, Genomics England Research Consortium, Robert Kleta, Adrian S Woolf, Detlef Bockenhauer, Adam P Levine, Daniel P Gale
Publikováno v:
eLife, Vol 11 (2022)
Posterior urethral valves (PUV) are the commonest cause of end-stage renal disease in children, but the genetic architecture of this rare disorder remains unknown. We performed a sequencing-based genome-wide association study (seqGWAS) in 132 unrelat
Externí odkaz:
https://doaj.org/article/b936c97484754cea89d1fbd490886997