9 citations · 9 across the 1 of their papers we have counts for
5 papers
Multiwavelength analysis and the C IV λ1549 Å emission line behavior from 2008 to 2020 of the FSRQ B2 1633+382
Raúl Antonio Amaya-Almazán, Vahram Chavushyan, Víctor Manuel Patiño-Álvarez
The flat-spectrum radio quasar B2 1633+382 (4C 38.41) has been monitored for several years and has presented correlated variability in multiple wavelengths. In this article, we are…
Multiwavelength analysis and the difference in the behavior of the spectral features during the 2010 and 2014 flaring periods of the blazar 3C 454.3
Raúl Antonio Amaya-Almazán, Vahram Chavushyan, Victor Manuel Patiño-Álvarez
The flat-spectrum radio quasar 3C~454.3 throughout the years has presented very high activity phases (flares) in which the different wavebands increase their flux dramatically. In…
Optical spectroscopic observations of low-energy counterparts of Fermi-LAT gamma-ray sources
H. A. Peña-Herazo, R. A. Amaya-Almazán, F. Massaro +15
A significant fraction of all -ray sources detected by the Large Area Telescope aboard the \fer\ satellite is still lacking a low-energy counterpart. In addition, there is still…
Optical spectroscopic observations of gamma-ray blazar candidates. X. Results from the 2018--2019 SOAR and OAN-SPM observations of blazar candidates of uncertain type
Raniere de Menezes, Raul A. Amaya-Almazán, Ezequiel J. Marchesini +14
The fourth Fermi Large Area Telescope Source Catalog (4FGL) lists over 5000 gamma-ray sources with statistical significance above 4. About 23% of the sources listed in this cata…
Flare-like Variability of the Mg~II 2798 Å Emission Line and UV Fe~II band in the Blazar CTA~102
Vahram Chavushyan, Víctor M. Patiño-Álvarez, Raúl A. Amaya-Almazán +1
We report on the detection of a statistically significant flare-like event in the Mg~II~ 2798~Å emission line and the UV~Fe~II band of CTA~102 during the outburst of autumn 2017…