449 citations · 1.5k across the 33 of their papers we have counts for
33 papers
Long term variability of the Broad Emission Line profiles in AGN
A. I. Shapovalova, L. C. Popovic, N. G. Bochkarev +6
Results of a long-term monitoring ( years) of the broad line and continuum fluxes of three Active Galactic Nuclei (AGN), 3C 390.3, NGC 4151, and NGC 5548, are presented…
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…
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…
Star formation in accretion discs : from the Galactic Center to Active Galactic Nuclei
Suzy Collin, Jean-Paul Zahn
Keplerian accretion discs around massive black holes (MBHs) are gravitationally unstable beyond a few hundredths of parsec and should collapse to form stars. Indeed an accretion/st…
Uncertainties of the masses of black holes and Eddington ratios in AGN
Suzy Collin
Black hole masses in Active Galactic Nuclei have been determined in 35 objects through reverberation mapping of the emission line region. I mention some uncertainties of the method…
Thermal instabilities in Active Galactic Nuclei: the case of thin vs. thick ionized media
A. C. Goncalves, S. Collin, A. -M. Dumont
We have studied the thermal instabilities in the context of Active Galactic Nuclei (AGN), addressing the cases of thin and thick (stratified) X-ray illuminated media. For that, we…