2 papers
astro-ph.GA2025
Identification of quasars variable over long time scales from infrared surveys. Ensemble variability and structure function properties
E. A. Zaharieva, V. D. Ivanov, E. P. Ovcharov +1
Quasars are variable and their variability can both constrain their physical properties and help to identify them. We look for ways to efficiently identify quasars exhibiting consi…
astro-ph.HE2017
Dissecting the long-term emission behaviour of the BL Lac object Mrk 421
M. I. Carnerero, C. M. Raiteri, M. Villata +4
We report on long-term multi-wavelength monitoring of blazar Mrk 421 by the GASP-WEBT collaboration and Steward Observatory, and by the Swift and Fermi satellites. We study the sou…