Browsing Astronomy and Astrophysics by Title
Now showing items 91-110 of 196
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Living in a Void: Testing the Copernican Principle with Distant Supernovae
(2008-07-09)A fundamental presupposition of modern cosmology is the Copernican Principle; that we are not in a central, or otherwise special region of the Universe. Studies of Type Ia supernovae, together with the Copernican Principle, ... -
MagAO IMAGING OF LONG-PERIOD OBJECTS (MILO). II. A PUZZLING WHITE DWARF AROUND THE SUN-LIKE STAR HD 11112
(Institute of Phisics, 2016-11)HD 11112 is an old, Sun-like star that has a long-term radial velocity (RV) trend indicative of a massive companion on a wide orbit. Here we present direct images of the source responsible for the trend using the Magellan ... -
MagAO imaging of long-period objects (MILO). II. A puzzling white dwarf around the sun-like star HD 11112
(IOP Publishing, 2016-11-10)© 2016. The American Astronomical Society. All rights reserved.HD 11112 is an old, Sun-like star that has a long-term radial velocity (RV) trend indicative of a massive companion on a wide orbit. Here we present direct ... -
Measuring the numerical viscosity in simulations of protoplanetary disks in Cartesian grids
(EDP Sciences, 2023-10)Context. Hydrodynamical simulations solve the governing equations on a discrete grid of space and time. This discretization causes numerical diffusion similar to a physical viscous diffusion, whose magnitude is often ... -
The Method of Images in Cosmology
We apply the method of images to the exact initial data for cosmological models that contain a number of regularly arranged discrete masses. This allows us to join cosmological regions together by throats, and to construct ... -
Migration of low-mass planets in inviscid discs: the effect of radiation transport on the dynamical corotation torque
(Oxford University Press (OUP), 2024-02-15)Low-mass planets migrate in the type-I regime. In the inviscid limit, the contrast between the vortensity trapped inside the planet’s corotating region and the background disc vortensity leads to a dynamical corotation ... -
Minimal distances between SCFTs
(2014-01-28) -
MISALIGNED DISKS IN THE BINARY PROTOSTAR IRS 43
(2016-10-10)