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Paper: Hard X-ray Non-thermal Emission of the Arches Cluster Complex Observed in 2015–2016 With NuSTAR and XMM–Newton
Volume: 528, New Horizons in Galactic Center Astronomy and Beyond
Page: 79
Authors: Kuznetsova, E.; Krivonos, R.
Abstract: Recent observations of the Arches cloud non-thermal emission with NuSTAR and XMM-Newton revealed a dramatic change both in morphology and intensity. These variations are similar to that observed in many molecular clouds of the Central Molecular Zone at the Galactic Center, which trace the propagation of illuminating fronts, presumably induced by past flaring activities of Sgr A*. We present the NuSTAR and XMM-Newton observational campaigns of the Arches cluster complex in 2015-2016. Detailed spectral analysis of three bright clumps of the Arches molecular cloud performed for the first time showed different EW6.4 keV and absorption. This is a strong hint that the X-ray emission from the molecular cloud is a mix of two components with different origins.
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