NuSTAR observation of the Arches cluster: X-ray spectrum extraction from a 2D image
Roman Krivonos (IKI, Moscow)
TL;DR
This paper presents a method for separating thermal and non-thermal X-ray emissions in NuSTAR observations of the Arches cluster, enabling clearer analysis of complex astrophysical sources.
Contribution
It introduces a novel technique to extract and distinguish spatially confused X-ray emissions from a stellar cluster and surrounding molecular cloud.
Findings
Successful separation of thermal and non-thermal X-ray components
Enhanced understanding of the cluster's X-ray emission structure
Method applicable to other complex X-ray sources
Abstract
The NuSTAR mission performed a long (200 ks) observation of the Arches stellar cluster in 2015. The emission from the cluster represents a mixture of bright thermal (kT~2 keV) X-rays and the extended non-thermal radiation of the molecular cloud around the cluster. In this work we describe the method used to decouple spatially confused emission of the stellar cluster and the molecular cloud in the NuSTAR data.
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