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IXPE and XMM-Newton Observations of the Soft Gamma Repeater SGR 1806–20
Abstract Recent observations with the Imaging X-ray Polarimetry Explorer (IXPE) of two anomalous X-ray pulsars provided evidence that X-ray emission from magnetar sources is strongly polarized. Here we report on the joint IXPE and XMM-Newton observations of the soft γ -repeater SGR 1806–20. The spectral and timing properties of SGR …