Detection of X-ray Emission from the Warm-Hot Intergalactic Medium through the Angular Autocorrelation Function with Chandra
Massimiliano Galeazzi, Anjali Gupta, Kevin Huffenberger, and Eugenio, Ursino
TL;DR
This paper investigates the detection of X-ray emission from the warm-hot intergalactic medium using the angular autocorrelation function with Chandra data, but faces challenges due to high background noise below 1 keV.
Contribution
The study applies the angular autocorrelation function to Chandra data to search for intergalactic medium emission, highlighting instrumental background limitations.
Findings
Chandra's background noise below 1 keV hampers detection sensitivity.
The angular autocorrelation function can be used to analyze diffuse X-ray emission.
Background noise levels are critical for future intergalactic medium studies.
Abstract
We have used the angular Autocorrelation Function (AcF) in a pointing with Chandra's ACIS-S instrument. However, we determined that the contribution of Chandra's background below 1 keV is too high to achieve reasonable sensitivity.
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Taxonomy
TopicsCalibration and Measurement Techniques · Astronomical Observations and Instrumentation · Astrophysics and Cosmic Phenomena