2009/07/14 by A. Ramirez, A. Ramírez, J. A. de Diego +3 · 20 citations
Physics and Astronomy · #Active galactic nucleus #Astrophysics and Cosmic Phenomena #Cosmology #Cosmology and Gravitation Theories #Duty cycle #Galaxies: Formation, Evolution, Phenomena #Quasar #Stars #astro-ph.CO
paper · pdf · doi:10.1088/0004-6256/138/3/991
published in The Astronomical Journal 138(3), 991-1002 (Institute of Physics) · 17 pages, 14 figures, Accepted for publication in the Astronomical Journal
arxiv created 2009/07/14 · openalex publication_date 2009/08/14 · arxiv updated 2015/05/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We present the results of an optical multiband ( BVR ) photometric monitoring program of 22 core-dominated radio-loud quasars (CRLQs) and 22 radio-quiet quasars (RQQs). The aim was to compare the properties of microvariability in both types of quasars. We detected optical microvariability in five RQQs and four CRLQs. Our results confirm that microvariability in RQQs may be as frequent as in CRLQs. In addition, we compare microvariability duty cycles in different bands. Finally, the implications for the origin of the microvariations are briefly discussed.