Browsing by Author "21e4ebbb-2e17-4cc2-887d-4b4673070d8e"

Now showing items 1-2 of 2

    • The origin of UV-optical variability in AGN and test of disc models: XMM-Newton and ground-based observations ... 
      McHardy, I. M.; Connolly, S. D.; Peterson, B. M.; Bieryla, A.; Chand, H.; Elvis, M. S.; Emmanoulopoulos, D.; Falco, E.; Kaspi, S.; Latham, D.; Lira Teillery, Paulina; McCully, C.; Netzer, H.; Uemura, M. (Wiley, 2016)
      The origin of short timescale (weeks/months) variability of AGN, whether due to intrinsic disc variations or reprocessing of X-ray emission by a surrounding accretion disc, has been a puzzle for many years. However recently ...
    • X-ray/UV/optical variability of NGC 4593 with Swift: Reprocessing of X-rays by an extended reprocessor 
      McHardy, I.; Connolly, S.; Horne, K.; Cackett, E.; Gelbord, J.; Peterson, B.; Pahari, M.; Gehrels, N.; Goad, M.; Lira Teillery, Paulina; Arevalo, P.; Baldi, R.; Brandt, N.; Breedt, E.; Chand, H.; Dewangan, G.; Done, C.; Elvis, M.; Emmanoulopoulos, D.; Fausnaugh, M.; Kaspi, S.; Kochanek, C.; Korista, K.; Papadakis, I.; Rao, A.; Uttley, P.; Vestergaard, M.; Ward, M. (Oxford University Press, 2018)
      We report the results of intensive X-ray, UV, and optical monitoring of the Seyfert 1 galaxy NGC 4593 with Swift. There is no intrinsic flux-related spectral change in any variable component with small apparent variations ...