5 papers · 1 filter
A cgi synthetic CMD calculator for the YY Isochrones
P. Demarque, S. N. Virani, E. J. Murphy +3
We describe a web-based cgi calculator for constructing synthetic color-magnitude diagrams for a simple stellar population (SSP) using the Yonsei-Yale (YY) isochrone data base. Thi…
The temporal characteristics of the Chandra X-ray Observatory high energy particle background
Catherine E. Grant, Mark W. Bautz, Shanil N. Virani
It was observed early on in the Chandra X-ray Observatory mission that the background rates of the Advanced CCD Imaging Spectrometer (ACIS) were highly variable on both short and l…
Analysis of On-Orbit ACIS Squeegee Mode Data on Chip I0
Shanil N. Virani, Paul P. Plucinsky, Catherine E. Grant +1
The MIT and CXC ACIS teams have explored a number of measures to ameliorate the effects of radiation damage suffered by the ACIS FI CCDs. One of these measures is a novel CCD read-…
The Low-Energy Spectral Response of the ACIS CCDs
Paul P. Plucinsky, Richard J. Edgar, Shanil N. Virani +2
The flight calibration of the spectral response of the Advanced CCD Imaging Spectrometer (ACIS) below 1.5 keV is difficult because of the lack of strong lines in the calibration so…
The Chandra Multi-wavelength Project (ChaMP): a serendipitous survey with Chandra archival data
B. J. Wilkes, P. Green, R. Brissenden +34
The launch of the Chandra X-ray Observatory in July 1999 opened a new era in X-ray astronomy. Its unprecedented, <0.5" spatial resolution and low background are providing views of…