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19 papers · 2 filters
Search for Pulsed TeV Gamma-ray Emission from the Crab Pulsar
R. W. Lessard, I. H. Bond, S. M. Bradbury +23
We present the results of a search for pulsed TeV emission from the Crab pulsar using the Whipple Observatory's 10 m gamma-ray telescope. The direction of the Crab pulsar was obser…
Modeling the Near-Infrared Luminosity Functions of Young Stellar Clusters
August A. Muench, Elizabeth A. Lada, Charles J. Lada
We present the results of numerical experiments designed to evaluate the usefulness of near-infrared luminosity functions for constraining the Initial Mass Function (IMF) of young…
A Multi-Component Measurement of the Cosmic Ray Composition Between 10^{17} eV and 10^{18} eV
T. Abu-Zayyad, K. Belov, D. J. Bird +45
The average mass composition of cosmic rays with primary energies between eV and eV has been studied using a hybrid detector consisting of the High Resolution Fly…
A Fast Search Technique for Binary Pulsars
Scott M. Ransom
I describe a computationally simple, efficient, and sensitive method to search long observations for pulsars in binary systems. The technique looks for orbitally induced sidebands…
The Dwarf Spheroidal Companions to M31: WFPC2 Observations of Andromeda II
G. S. Da Costa, T. E. Armandroff, Nelson Caldwell +1
The HST WFPC2 camera has been used to image Andromeda II, a dwarf spheroidal (dSph) companion to M31. The resulting color-magnitude diagrams reveal the morphology of the horizontal…
Extragalactic background light absorption signal in the 0.26-10 TeV spectra of blazars
Vladimir V. Vassiliev
Recent observations of the TeV gamma-ray spectra of the two closest active galactic nuclei (AGNs), Markarian 501 (Mrk 501) and Markarian 421 (Mrk 421), by the Whipple and HEGRA col…