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Principal component analysis of the Chandra ACIS gain
Hans Moritz Günther, Ákos Bogdán, Nick Durham
Up to 2020, the Chandra ACIS gain has been calibrated using the External Calibration Source (ECS). The ECS consists of an Fe-55 radioactive source and is placed in the ACIS housing…
Ray-tracing a small orbital mission for soft-X-ray polarimetry
Hans Moritz Günther, Herman L. Marshall, Alan Garner
X-ray polarimetry is still largely uncharted territory. With the upcoming launch of IXPE, we will learn a lot more about X-ray polarization at energies above 2 keV, but so far no c…
MARXS: A modular software to ray-trace X-ray instrumention
Hans Moritz Günther, Jason Frost, Adam Theriault-Shay
To obtain the best possible scientific result, astronomers must understand the properties of the available instrumentation well. This is important both when designing new instrumen…
Astropy: A Community Python Package for Astronomy
The Astropy Collaboration, Thomas P. Robitaille, Erik J. Tollerud +42
We present the first public version (v0.2) of the open-source and community-developed Python package, Astropy. This package provides core astronomy-related functionality to the com…