4 papers
An X-ray Data Primer: What I Wish I Knew When Starting X-ray Astronomy
Nicholas P. Lee, Jonathan C. McDowell, Evan D. Tingle +1
This guide is intended for astronomers new to X-ray astronomy. It provides a brief overview of the data products typically encountered by the user and highlights analysis considera…
CIAO: Chandra's Data Analysis System for X-Ray Astronomy and Beyond
Antonella Fruscione, Jonathan McDowell, Douglas Burke +13
The Chandra Interactive Analysis of Observations (CIAO) software, developed by the Chandra X-ray Center, has been the data analysis package for the Chandra X-ray Observatory since…
Sherpa: An Open Source Python Fitting Package
Aneta Siemiginowska, Douglas Burke, Hans Moritz Günther +8
We present an overview of Sherpa, an open source Python project, and discuss its development history, broad design concepts and capabilities. Sherpa contains powerful tools for com…
Front-row seat of the recent R Aqr periastron passage: X-ray multi-epoch spectral and spatial analysis
A. Sacchi, M. Karovska, J. Raymond +7
We report on the X-ray spectral and spatial evolution of the Symbiotic star R Aqr. Through a multi-epoch observational campaign performed with Chandra between 2017 and 2022, we stu…