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Nonlinear tides in a homogeneous rotating planet or star: global simulations of the elliptical instability
(Oxford University PressMonthly Notices of the Royal Astronomical Society, 2016)
I present results from the first global hydrodynamical simulations of the elliptical instability in a tidally deformed gaseous planet (or star) with a free surface. The elliptical instability is potentially important for ...
Small acoustically forced symmetric bodies in viscous fluids
(American Institute of PhysicsJournal of the Acoustical Society of America, 2016-03-03)
The total force exerted on a small rigid body by an acoustic field in a viscous fluid is addressed analytically in the limit where the typical size of the particle is smaller than both the viscous diffusion length scale ...
A squirmer across Reynolds numbers
(Cambridge University PressJournal of Fluid Mechanics, 2016)
The self-propulsion of a spherical squirmer - a model swimming organism that achieves locomotion via steady tangential movement of its surface - is quantified across the transition from viscously to inertially dominated ...
Atomic Processes for Astrophysical Plasmas
(Institute of PhysicsJournal of Physics B: Atomic, Molecular and Optical Physics, 2016)
In this review we summarize the recent calculations and improvements of atomic data that we have carried out for the analysis of astrophysical spectroscopy within the Atomic Processes for Astrophysical Plasmas (APAP) ...
The Complexity of Divisibility
(ElsevierLinear Algebra and its Applications, 2016-04-08)
We address two sets of long-standing open questions in linear algebra and probability theory, from a computational complexity perspective: stochastic matrix divisibility, and divisibility and decomposability of probability ...
Spontaneous scalarization with massive fields
(American Physical SocietyPhysical Review D, 2016-03-03)
We study the effect of a mass term in the spontaneous scalarization of neutron stars, for a wide range of scalar field parameters and neutron star equations of state. Even though massless scalars have been the focus of ...
Rotation of slender swimmers in isotropic-drag media
(American Physical SocietyPhysical Review E, 2016)
The drag anisotropy of slender filaments is a critical physical property allowing swimming in low-Reynolds number flows, and without it linear translation is impossible. Here we show that, in contrast, net rotation can ...
Consequences of tidal interaction between disks and orbiting protoplanets for the evolution of multi-planet systems with architecture resembling that of Kepler 444
(SpringerCelestial Mechanics and Dynamical Astronomy, 2016)
We study orbital evolution of multi-planet systems with masses in the terrestrial planet regime induced through tidal interaction with a protoplanetary disk assuming that this is the dominant mechanism for producing orbital ...
The formation and evolution of reconnection-driven, slow-mode shocks in a partially ionised plasma
(EDP SciencesAstronomy & Astrophysics, 2016)
The role of slow-mode magnetohydrodynamic (MHD) shocks in magnetic reconnection is of great importance for energy conversion and transport, but in many astrophysical plasmas the plasma is not fully ionised. In this paper, ...
A WKB approximation of elastic waves travelling on a shell of revolution
(ElsevierJournal of Sound and Vibration, 2016-08-04)
This paper is concerned with the elastic waveguide properties of an infinite pipe with circular cross section whose radius varies slowly along its length. The equations governing the elastodynamics of such shells are derived ...