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Browsing by Author "Paltani, S."
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30 years of multi-wavelength observations of 3C 273
Turler, M.; Paltani, S.; Courvoisier, T. J-L.; Aller, M.; Aller, H.; Blecha, A.; Bouchet, P.; Lainela, M.; McHardy, I.M.; Robson, E.I.; Stevens, J. A.; Terasranta, H.; Tornikoski, M.; Ulrich, M. H.; Waltman, E.B.; Wamsteker, W.; Wright, M.C.H. (1999)We present a wide multi-wavelength database of most observations of the quasar 3C273 obtained during the last 30 years. This database is the most complete set of observations available for an active galactic nucleus (AGN). ... -
Transient obscuration event captured in NGC 3227. I. Continuum model for the broadband spectral energy distribution
Mehdipour, M.; Kriss, G. A.; Kaastra, J. S.; Wang, Y.; Mao, J.; Costantini, E.; Arav, N.; Behar, E.; Bianchi, S.; Branduardi-Raymont, G.; Brotherton, M.; Cappi, M.; Marco, B. De; Gesu, L. Di; Ebrero, J.; Grafton-Waters, S.; Kaspi, S.; Matt, G.; Paltani, S.; Petrucci, P. -O.; Pinto, C.; Ponti, G.; Ursini, F.; Walton, D. J. (2021-06-28)From Swift monitoring of a sample of active galactic nuclei (AGN) we found a transient X-ray obscuration event in Seyfert-1 galaxy NGC 3227, and thus triggered our joint XMM-Newton, NuSTAR, and Hubble Space Telescope (HST) ...