- Tel Aviv UniversityIL388 papers
- Centre National de la Recherche ScientifiqueFR320 papers
- Rutgers, The State University of New JerseyUS278 papers
- University of California, Santa CruzUS239 papers
- Weizmann Institute of ScienceIL223 papers
- California Institute of TechnologyUS202 papers
- University of California, BerkeleyUS194 papers
- Space Telescope Science InstituteUS128 papers
- Technion – Israel Institute of TechnologyIL118 papers
- Universidad Autónoma de MadridES113 papers
- University of ArizonaUS111 papers
- Johns Hopkins UniversityUS110 papers
35 papers · 2 filters
Master Equation for Hydrogen Recombination on Grain Surfaces
Ofer Biham, Itay Furman, Valerio Pirronello +1
Recent experimental results on the formation of molecular hydrogen on astrophysically relevant surfaces under conditions similar to those encountered in the interstellar medium pro…
The spherical collapse model in a universe with cosmological constant
Ewa L. Lokas, Y. Hoffman
We generalize the spherical collapse model for the formation of dark matter halos to apply in a universe with arbitrary positive cosmological constant. We calculate the critical co…
A universal angular momentum profile for galactic halos
James S. Bullock, Avishai Dekel, Tsafrir S. Kolatt +4
[Abridged] We study the angular-momentum profiles of a statistical sample of halos drawn from a high-resolution N-body simulation of the LCDM cosmology. We find that the cumulative…
Deducing the Source of Ultrahigh Energy Cosmic Rays
Glennys R. Farrar, Tsvi Piran
The apparent lack of suitable astrophysical sources for cosmic rays with E > 10^{19.7} eV (UHECRs) is the "GZK Paradox". We argue that whatever mechanism produces them must also ac…
Galaxy Formation at z~3: Constraints from Spatial Clustering
Risa H. Wechsler, Rachel S. Somerville, James S. Bullock +4
We use N-body simulations combined with semi-analytic models to compute the clustering properties of modeled galaxies at z~3, and confront these predictions with the clustering pro…
Remnants from Gamma-Ray Bursts
Shai Ayal, Tsvi Piran
We model the intermediate time evolution of a "jetted" gamma-ray burst by two blobs of matter colliding with the interstellar medium. We follow the hydrodynamical evolution of this…