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Afterglows as Diagnostics of Gamma Ray Burst Beaming
James E. Rhoads
If gamma ray bursts are highly collimated, radiating into only a small fraction of the sky, the energy requirements of each event may be reduced by several (up to 4 - 6) orders of…
Microlensing of Globular Clusters as a Probe of Galactic Structure
James E. Rhoads, Sangeeta Malhotra
The spatial distribution of compact dark matter in our Galaxy can be determined in a few years of monitoring Galactic globular clusters for microlensing. Globular clusters are the…
Young red supergiants and the near infrared light appearance of disk galaxies
James E. Rhoads
Disk galaxies often show prominent nonaxisymmetric features at near-infrared wavelengths. Such features may indicate variations in the surface density of stellar mass, contribution…
How to Tell a Jet from a Balloon: A Proposed Test for Beaming in Gamma Ray Bursts
James E. Rhoads
If gamma ray bursts are highly collimated, the energy requirements of each event may be reduced by several (~ 4-6) orders of magnitude, and the event rate increased correspondingly…
Dynamics of ``Small Galaxies'' in the Hubble Deep Field
Wesley N. Colley, Oleg Y. Gnedin, Jeremiah P. Ostriker +1
We have previously found in the Hubble Deep Field a significant angular correlation of faint, high color-redshift objects on scales below one arcsecond, or several kiloparsecs in m…