Browsing by Subject "X-rays -- Spectra"

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Swift, NuStar and XMM-Newton observations of the NLS1 galaxy RX J2317.8–4422 in an extreme X-ray low flux state

Grupe, Dirk; Komossa, S.; Gallo, Luigi C.; Schartel, Norbert; Parker, Michael; Santos-Lleo, Maria; Fabian, Andrew C.; Harrison, Fiona; Miniutti, Giovanni (Oxford University PressRoyal Astronomical Society, 2019-03-20)

We report the discovery of RX J2317.8–4422 in an extremely low X-ray flux state by the Neil Gehrels Swift observatory in 2014 April/May. In total, the low-energy X-ray emission dropped by a factor of 100. ...

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