Investigating the origin of the faint non-thermal emission of the Arches cluster using the 2015-2016 NuSTAR and XMM-Newton X-ray observations

10 Jan 2019 Kuznetsova Ekaterina Krivonos Roman Clavel Maïca Lutovinov Alexander Chernyshov Dmitry Hong JaeSub Mori Kaya Ponti Gabriele Tomsick John Zhang Shuo

Recent NuSTAR and XMM-Newton observations of the molecular cloud around the Arches stellar cluster demonstrate a dramatic change both in morphology and intensity of its non-thermal X-ray emission, similar to that observed in many molecular clouds of the Central Molecular Zone at the Galactic Center. These variations trace the propagation of illuminating fronts, presumably induced by past flaring activities of Sgr A$^{\star}$... (read more)

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