OGLE-2009-BLG-092/MOA-2009-BLG-137: A Dramatic Repeating Event With the Second Perturbation Predicted by Real-Time Analysis [PDF]
We report the result of the analysis of a dramatic repeating gravitational microlensing event OGLE-2009-BLG-092/MOA-2009-BLG-137, for which the light curve is characterized by two distinct peaks with perturbations near both peaks.
A. Allan+129 more
core +3 more sources
Short-axis-mode rotation of a free rigid body by perturbation series [PDF]
A simple rearrangement of the torque free motion Hamiltonian shapes it as a perturbation problem for bodies rotating close to the principal axis of maximum inertia, independently of their triaxiality.
Lara, Martin
core +1 more source
The properties of the local spiral arms from RAVE data: two-dimensional density wave approach [PDF]
Using the RAVE survey, we recently brought to light a gradient in the mean galactocentric radial velocity of stars in the extended solar neighbourhood.
A. Helmi+75 more
core +10 more sources
Dynamics of dark energy in collapsing halo of dark matter [PDF]
We investigate the non-linear evolution of spherical density and velocity perturbations of dark matter and dark energy in the expanding Universe. For that we have used the conservation and Einstein equations to describe the evolution of gravitationally ...
Novosyadlyj, B., Tsizh, M.
core +1 more source
Interpretation of Strong Short-Term Central Perturbations in the Light Curves of Moderate-Magnification Microlensing Events [PDF]
To improve the planet detection efficiency, current planetary microlensing experiments are focused on high-magnification events searching for planetary signals near the peak of lensing light curves.
A. Allan+105 more
core +3 more sources
Self-consistent massive disks in triaxial dark matter halos [PDF]
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
Formation and Evolution of Planetary Systems in Presence of Highly Inclined Stellar Perturbers [PDF]
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
Intensity interferometry for observation of dark objects
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
Element sets for high-order Poincar\'e mapping of perturbed Keplerian motion [PDF]
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
Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Jessica H. Whiteside+3 more
wiley +3 more sources