111 citations · 1.1k across the 53 of their papers we have counts for
4 papers · 2 filters
Redshift determination of the BL Lac object 3C66A by the detection of its host galaxy cluster at
Juanita Torres-Zafra, Sergio A. Cellone, Alberto Buzzoni +2
The BL Lac object 3C66A is one of the most luminous extragalactic sources at TeV -rays (VHE, i.e. GeV). Since TeV -ray radiation is absorbed by the extragalactic bac…
Impact of seeing and host galaxy into the analysis of photo-polarimetric microvariability in blazars - Case study of the nearby blazars 1ES 1959+650 and HB89 2201+044
Marina Sosa, Carolina von Essen, Ileana Andruchow +1
Blazars, a type of Active Galactic Nuclei, present a particular orientation of their jets close to the line ofsight. Their radiation is thus relativistically beamed, giving rise to…
First confirmed ultra-compact dwarf galaxy in the NGC 5044 group
Favio R. Faifer, Carlos G. Escudero, María C. Scalia +5
Context. Ultra-compact dwarfs (UCDs) are stellar systems displaying colours and metallicities between those of globular clusters (GCs) and early-type dwarf galaxies, as well as siz…
Microvariability in AGNs: study of different statistical methods - I. Observational analysis
L. Zibecchi, I. Andruchow, S. A. Cellone +3
We present the results of a study of different statistical methods currently used in the literature to analyse the (micro)variability of active galactic nuclei (AGNs) from ground-b…