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21 papers · 2 filters

astro-ph2000★ 93 cited

The ASCA Catalog of Potential X-Ray Counterparts of GeV Sources

Mallory S. E. Roberts, Roger W. Romani, Nobuyuki Kawai

We present a catalog of 2-10 keV ASCA Gas Imaging Spectrometer images of fields containing bright sources of GeV emission. The images cover of the 95% confidence positio…

astro-ph2000

Weak Lensing Constraints on Cluster Structural Parameters

Jeffrey A. Willick, Nikhil Padmanabhan

We study the reliability of dark matter (DM) profile determinations for rich clusters of galaxies based on weak gravitational lensing measurements. We consider three functional for…

astro-ph2000★ 16 cited

The Effect of Formation Redshifts on the Cluster Mass-Temperature Relation

Benjamin F. Mathiesen

I employ an ensemble of hydrodynamical simulations and the XSPEC MEKAL emission model to reproduce observable spectral and flux-weighted temperatures for 24 clusters. Each cluster…

astro-ph2000★ 40 cited

Histogram Analysis of Gallex, GNO and Sage Neutrino Data: Further Evidence for Variability of the Solar Neutrino Flux

Peter A. Sturrock, Jeffrey D. Scargle

If the solar neutrino flux were constant, as is widely assumed, the histogram of flux measurements would be unimodal. On the other hand, sinusoidal or square-wave modulation (eithe…

astro-ph2000★ 163 cited

Synchrotron Radiation as the Source of Gamma-Ray Burst Spectra

Nicole M. Lloyd-Ronning, Vahe' Petrosian

We investigate synchrotron emission models as the source of gamma-ray burst spectra. We show that including the possibility for synchrotron self-absorption, a ``smooth cutoff'' to…

astro-ph2000★ 41 cited

USA and RXTE Observations of a Variable Low-Frequency QPO in XTE J1118+480

K. S. Wood, P. S. Ray, R. M. Bandyopadhyay +13

The USA experiment on ARGOS and RXTE have exensively observed the X-ray transient XTE J1118+480 during its recent outburst in 2000 April--June. We present detailed monitoring of th…