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- California Institute of TechnologyUS6 papers
- Centre National de la Recherche ScientifiqueFR5 papers
- Norwegian University of Science and TechnologyNO5 papers
- Brookhaven National LaboratoryUS4 papers
- IIT@MITUS4 papers
- Leiden UniversityNL4 papers
- SKA ObservatoryGB4 papers
- University of California, BerkeleyUS4 papers
- Hebrew University of JerusalemIL3 papers
- Jet Propulsion LaboratoryUS3 papers
- Max Planck Institute for Dynamics and Self-OrganizationDE3 papers
- Max Planck SocietyDE3 papers
5 papers · 2 filters
Luminosity distance in "Swiss cheese" cosmology with randomized voids: I. Single void size
R. Ali Vanderveld, Eanna E. Flanagan, Ira Wasserman
Recently there have been suggestions that the Type Ia supernova data can be explained using only general relativity and cold dark matter with no dark energy. In "Swiss cheese" mode…
Weighing the spatial and temporal fluctuations of the dark universe
Pengjie Zhang, Rachel Bean, Michele Liguori +1
A generic prediction of the standard cosmology, based on general relativity (GR), dark matter and the cosmological constant (and more generally, smooth dark energy), is that, the t…
Backreaction of superhorizon perturbations in scalar field cosmologies
Naresh Kumar, Eanna E. Flanagan
It has been suggested that the acceleration of the Universe may be due to the backreaction of perturbations to the Friedmann-Robertson-Walker background. For a Universe dominated b…
Chemical Abundances and Dust in Planetary Nebulae in the Galactic Bulge
S. Gutenkunst, J. Bernard-Salas, S. R. Pottasch +2
We present mid-infrared Spitzer spectra of eleven planetary nebulae in the Galactic Bulge. We derive argon, neon, sulfur, and oxygen abundances for them using mainly infrared line…
Accretion to Magnetized Stars through the Rayleigh-Taylor Instability: Global Three-Dimensional Simulations
Akshay K. Kulkarni, Marina M. Romanova
We present results of 3D simulations of MHD instabilities at the accretion disk-magnetosphere boundary. The instability is Rayleigh-Taylor, and develops for a fairly broad range of…