Self-consistent massive disks in triaxial dark matter halos [PDF]
, 2007 Galactic disks in triaxial dark matter halos become deformed by the elliptical potential in the plane of the disk in such a way as to counteract the halo ellipticity. We develop a technique to calculate the equilibrium configuration of such a disk in the
Alberto D. Bolatto +6 more
core +2 more sources
Measurements of the Matter Density Perturbation Amplitude from Cosmological Data [PDF]
Astronomy letters, 2018 The various measurements of the linear matter density perturbation amplitude obtained from the observations of the cosmic microwave background (CMB) anisotropy, weak gravitational lensing, galaxy cluster mass function, matter power spectrum, and redshift
R. Burenin
semanticscholar +1 more source
Investigation of the Surface Brightness Model in the Milky Way via Homotopy Perturbation Method
Journal of Applied Mathematics and Physics, 2020 In this paper, a linear delay model in astronomy, called as Ambartsumian equation, is investigated by two different approaches. The first is the approximate homotopy perturbation method (HPM), while the second is a new closed-form solution for this ...
Abdullah A. Alatawi +3 more
semanticscholar +1 more source
Formation and Evolution of Planetary Systems in Presence of Highly Inclined Stellar Perturbers [PDF]
, 2011 The presence of highly eccentric extrasolar planets in binary stellar systems suggests that the Kozai effect has played an important role in shaping their dynamical architectures.
Batygin, Konstantin +2 more
core +4 more sources
Forced magnetic reconnection and plasmoid coalescence: I - MHD Simulations [PDF]
, 2019 Forced magnetic reconnection, a reconnection event triggered by external perturbation, should be ubiquitous in the solar corona. Energy released during such cases can be much greater than that which was introduced by the perturbation.
Browning, Philippa +2 more
core +2 more sources
Metric tensor formulation of strain in density-functional perturbation theory [PDF]
, 2004 The direct calculation of the elastic and piezoelectric tensors of solids can be accomplished by treating homogeneous strain within the framework of density-functional perturbation theory.
D. Hamann +11 more
semanticscholar +1 more source
Element sets for high-order Poincar\'e mapping of perturbed Keplerian motion [PDF]
, 2018 The propagation and Poincar\'e mapping of perturbed Keplerian motion is a key topic in celestial mechanics and astrodynamics, e.g. to study the stability of orbits or design bounded relative trajectories. The high-order transfer map (HOTM) method enables
Armellin, Roberto, Gondelach, David J.
core +2 more sources
Chaotic dynamics of the planet in HD 196885 AB [PDF]
, 2014 Depending on the planetary orbit around the host star(s), a planet could orbit either one or both stars in a binary system as S-type or P-type, respectively. We have analysed the dynamics of the S-type planetary system in HD 196885 AB with an emphasis on
Hinse, Tobias Cornelius +3 more
core +1 more source
Gravitational wave astronomy with radio galaxy surveys [PDF]
, 2016 In the next decade, new astrophysical instruments will deliver the first large-scale maps of gravitational waves and radio sources. Therefore, it is timely to investigate the possibility to combine them to provide new and complementary ways to study the ...
A. Raccanelli
semanticscholar +1 more source
Intensity interferometry for observation of dark objects
, 2013 We analyze an intensity interferometry measurement carried out with two point-like detectors facing a distant source (e.g., a star) that may be partially occluded by an absorptive object (e.g., a planet).
Erkmen, Baris I. +2 more
core +1 more source