Results 11 to 20 of about 313 (213)
The origin of the orbital parameter distribution of merging haloes [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT We describe a simple model that explains the qualitative and (approximate) quantitative features of the distribution of orbital velocities of merging pairs of dark matter haloes. Our model considers a primary dark matter halo as a perturber in a background of secondary haloes with velocities described by linear theory.
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Halo Orbits under Some Perturbations in cr3bp
Symmetry, 2023 The general idea of this paper is to study the effect of mass variation of a test particle on periodic orbits in the restricted three-body model. In the circular restricted three-body problem (cr3bp), two bigger bodies (known as primary and secondary or sometime only primaries) are placed at either side of the origin on abscissa while moving in ...
Abdulrahman B. Albidah +1 more
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Using frequency maps to explore the distribution function of the Milky Way stellar halo
EPJ Web of Conferences, 2012 Resolved surveys of the Milky Way's stellar halo can obtain all 6 phase space coordinates of tens of thousands of individual stars, making it possible to compute their 3-dimensional orbits.
Valluri M.
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Iraqi Journal of Physics, 2021 The two-neutron halo-nuclei (17B, 11Li, 8He) was investigated using a two-body nucleon density distribution (2BNDD) with two frequency shell model (TFSM).
Shaimaa Ali Rahi, Gaith Naima Flaiyh
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Mathematics, 2021 In this paper, we develop a method to solve for periodic orbits, i.e., Lyapunov and Halo orbits, using a functional interpolation scheme called the Theory of Functional Connections (TFC).
Hunter Johnston +2 more
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Open Astronomy, 2016 Locating the position of periodic orbits in galaxies is undoubtedly an issue of paramount importance. We reveal the position and the stability of periodic orbits of stars moving in the meridional plane (R, z) of an axially symmetric galactic model with a
Zotos Euaggelos E.
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Orbital parameters of merging dark matter halos [PDF]
Astronomy & Astrophysics, 2005 In order to specify cosmologically motivated initial conditions for major galaxy mergers (mass ratios $\leq$ 4:1) that are supposed to explain the formation of elliptical galaxies we study the orbital parameters of major mergers of cold dark matter halos using a high-resolution cosmological simulation. Almost half of all encounters are nearly parabolic
Khochfar, S., Burkert, A.
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Remote Sensing, 2023 This paper presents a solution for autonomous orbit determination and time synchronization of spacecraft in Halo orbits around Lagrange points using inter-satellite links.
Gheorghe Sirbu, Mauro Leonardi
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Modeling Halo Orbits and the Associated Manifolds in the Restricted Three Body Problem [PDF]
فصلنامه علوم و فناوری فضایی, 2010 Development of halo orbits and their associated invariant manifolds are investigated. Halo orbits play a fundamental role in complex space mission designs.
M. Jafari Nadoushan, S. H. Pourtakdoust
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How does the Structure of Spherical Dark Matter Haloes Affect the Types of Orbits in Disk Galaxies?
Open Astronomy, 2014 The main objective of this work is to determine the character of orbits of stars moving in the meridional (R, z) plane of an axially symmetric time-independent disk galaxy model with a central massive nucleus and an additional spherical dark matter halo ...
Zotos Euaggelos E.
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