180 citations · 532 across the 9 of their papers we have counts for
10 papers
The Evolution of the ACIS Contamination Layer on the Chandra X-ray Observatory from 2010 to 2026
Paul P. Plucinsky, Peter W. Ratzlaff, Akos Bogdan +1
The Chandra X-ray Observatory (CXO) was launched over 27 years ago and has been delivering spectacular science over the course of its mission. The Advanced CCD Imaging Spectrometer…
X-Ray, UV, and Optical Observations of Proxima Centauri's Stellar Cycle
B. J. Wargelin, S. H. Saar, Z. A. Irving +3
Proxima Cen (GJ 551; dM5.5e) is one of only about a dozen fully convective stars known to have a stellar cycle, and the only one to have long-term X-ray monitoring. A previous anal…
Concordance: In-flight Calibration of X-ray Telescopes without Absolute References
Herman L. Marshall, Yang Chen, Jeremy J. Drake +7
We describe a process for cross-calibrating the effective areas of X-ray telescopes that observe common targets. The targets are not assumed to be "standard candles" in the classic…
A 33 year constancy of the X-ray coronae of AR Lac and eclipse diagnosis of scale height
Jeremy J. Drake, Peter Ratzlaff, Vinay Kashyap +3
Extensive X-ray and extreme ultraviolet (EUV) photometric observations of the eclipsing RS CVn system AR Lac were obtained over the years 1997 to 2013 with the Chandra X-ray Observ…
Accounting for Calibration Uncertainties in X-ray Analysis: Effective Areas in Spectral Fitting
Hyunsook Lee, Vinay L. Kashyap, David A. van Dyk +9
While considerable advance has been made to account for statistical uncertainties in astronomical analyses, systematic instrumental uncertainties have been generally ignored. This…
X-Ray Flaring on the dMe Star, Ross 154
B. J. Wargelin, V. L. Kashyap, J. J. Drake +2
We present results from two Chandra imaging observations of Ross 154, a nearby flaring M dwarf star. During a 61-ks ACIS-S exposure, a very large flare occurred (the equivalent of…
Doppler Shifts and Broadening and the Structure of the X-ray Emission from Algol
Sun Mi Chung, Jeremy J. Drake, Vinay L. Kashyap +2
In a study of Chandra High Energy Transmission Grating spectra of Algol, we clearly detect Doppler shifts caused by the orbital motion of Algol B. These data provide the first defi…
Chandra Multi-wavelength Project (ChaMP). II. First Results of X-ray Source Properties
D. -W. Kim, B. J. Wilkes, P. J. Green +15
We present the first results of ChaMP X-ray source properties obtained from the initial sample of 62 observations. The data have been uniformly reduced and analyzed with techniques…
Chandra Multi-wavelength Project (ChaMP). I. First X-ray Source Catalog
D. -W. Kim, R. A. Cameron, J. J. Drake +16
The Chandra Multi-wavelength Project (ChaMP) is a wide-area (~14 deg^2) survey of serendipitous Chandra X-ray sources, aiming to establish fair statistical samples covering a wide…
First Light Measurements of Capella with the Low Energy Transmission Grating Spectrometer aboard the Chandra X-ray Observatory
A. C. Brinkman, C. J. T. Gunsing, J. S. Kaastra +20
We present the first X-ray spectrum obtained by the Low Energy Transmission Grating Spectrometer (LETGS) aboard the Chandra X-ray Observatory. The spectrum is of Capella and covers…