Browsing by Subject "Galaxies: Seyfert"

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Long-term X-ray variability characteristics of the narrow-line Seyfert 1 galaxy RE J1034+396

Chaudhury, K.; Chandra, S.; Chitnis, V.R.; Rao, A.R.; Singh, K.P. (Oxford Univ Press, 2018)

We present the results of our study of the long-term X-ray variability characteristics of the narrow-line Seyfert 1 galaxy RE J1034+396. We use data obtained from the AstroSat satellite along with light curves obtained ...
Prospects for γ-ray observations of narrow-line Seyfert 1 galaxies with the Cherenkov Telescope Array. II. γ-γ absorption in the broad-line region radiation fields

Romano, P.; Böttcher, M.; Foschini, L.; Boisson, C.; Vercellone, S. (Oxford Univ Press, 2020)

Gamma-ray emitting narrow-line Seyfert 1 (γ-NLS1) galaxies possibly harbour relatively low-mass black holes (106–108 M⊙) accreting close to the Eddington limit, and share many characteristics with their sibling sources, ...