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Discovery of 40.5 ks Hard X-Ray Pulse-phase Modulations from SGR 1900+14

Suzuki, H.; Enoto, T.; Makishima, K. +4 more

X-ray timing properties of the magnetar SGR 1900+14 were studied, using the data taken with Suzaku in 2009 and NuSTAR in 2016, for a time lapse of 114 and 242 ks, respectively. On both occasions, the object exhibited the characteristic two-component spectrum. The soft component, dominant in energies below ~5 keV, showed a regular pulsation, with a…

Are Compton-thin AGNs Globally Compton Thin?

Yukita, M.; Ptak, A.; LaMassa, S. +2 more

We select eight nearby active galactic nuclei (AGNs) which, based on previous work, appear to be Compton-thin in the line of sight. We model with MYTORUS their broadband X-ray spectra from 20 individual observations with Suzaku, accounting self-consistently for Fe Kα line emission, as well as direct and scattered continuum from matter with finite …