449 citations · 1.5k across the 33 of their papers we have counts for
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astro-ph2008★ 1 cited
Are AGN the Best Factories for High Energy Particles and Photons?
Suzy Collin
The main properties of AGN are reviewed, focussing on the accretion process and on the question of whether AGN are the best factories of ultra high energy particles and photons. I…
astro-ph2008★ 75 cited
Long-term variability of the optical spectra of NGC 4151: I. Light curves and flux correlations
A. I. Shapovalova, L. C. Popovic, S. Collin +13
Results of a long-term spectral monitoring of the active galactic nucleus of NGC 4151 are presented (11 years, from 1996 to 2006). High quality spectra (S/N>50 in the continuum nea…