Now showing items 41-45 of 45
An inexpensive circuit for monitoring photomultiplier anode current
(Elsevier, 1992-01-01)
An 8-channel current-to-frequency converter module has been developed for measuring photomultiplier anode currents in the range of 1-100 [mu]A. Although this circuit was designed specifically for monitoring photomultiplier ...
Expectations for X-Ray-Cluster Observations by the Rosat Satellite
(Univ Chicago Press, 1991-12-10)
We present predictions for characteristics of the X-ray cluster population expected to be observed by the ROSAT satellite. The theoretical modeling requires an assumed fluctuation spectrum and relations describing the ...
Properties of the intracluster medium in an ensemble of nearby galaxy clusters
(Univ Chicago Press, 1999-06-01)
We present a systematic analysis of the intracluster medium (ICM) in an X-ray flux limited sample of 45 galaxy clusters. Using archival ROSAT Position-Sensitive Proportional Counter (PSPC) data and published ICM temperatures, ...
2-Fluid Simulations of Galaxy Formation
(Univ Chicago Press, 1994-02-10)
We investigate the formation of galaxies and larger structure with a simulation modeling two gravitationally coupled fluids representing dark matter and baryons. The baryon gas dynamics are calculated with a smoothed ...
An amplifier-discriminator module for very high energy [gamma]-ray astronomy
(Elsevier, 1990-07-15)
An eight-channel amplifier-discriminator module has been developed for processing fast photomultiplier signals from a ground-based [gamma]-ray imaging telescope. The module provides several outputs for recording pulse ...