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25 papers · 2 filters
Motion of test bodies in theories with nonminimal coupling
Dirk Puetzfeld, Yuri N. Obukhov
We derive the equations of motion of test bodies for a theory with nonminimal coupling by means of a multipole method. The propagation equations for pole-dipole particles are worke…
Evolution of dwarf early-type galaxies I. Spatially resolved stellar populations and internal kinematics of Virgo cluster dE/dS0 galaxies
Igor Chilingarian
Understanding the origin and evolution of dwarf early-type galaxies remains an important open issue in modern astrophysics. Internal kinematics of a galaxy contains signatures of v…
Testing the cosmological evolution of magnetic fields in galaxies with the SKA
Tigran G. Arshakian, Rainer Beck, Marita Krause +1
We investigate the cosmological evolution of large- and small-scale magnetic fields in galaxies at high redshifts. Results from simulations of hierarchical structure formation cosm…
Neutral H density at the termination shock: a consolidation of recent results
M. Bzowski, E. Moebius, S. Tarnopolski +2
We discuss a consolidation of determinations of the density of neutral interstellar H at the nose of the termination shock carried out with the use of various data sets, techniques…
Evolution of magnetic fields in galaxies and future observational tests with the Square Kilometre Array
Tigran G. Arshakian, Rainer Beck, Marita Krause +1
Aims. We investigate the cosmological evolution of large- and small-scale magnetic fields in galaxies in the light of present models of formation and evolution of galaxies. Methods…
Mean-field dynamos in random Arnold-Beltrami-Childress and Roberts flows
N. Kleeorin, I. Rogachevskii, D. Sokoloff +1
We study magnetic field evolution in flows with fluctuating in time governing parameters in electrically conducting fluid. We use a standard mean-field approach to derive equations…