111 citations · 1.1k across the 53 of their papers we have counts for
12 papers · 1 filter
SN 2024ggi: another year, another striking Type II supernova
K. Ertini, T. A. Regna, L. Ferrari +19
SN 2024ggi is a Type II supernova that exploded in the nearby galaxy NGC 3621 at a distance of approximately 7 Mpc, making it one of the closest supernovae of the decade. This SN s…
Optical monitoring in southern blazars. Analysis of variability and spectral colour behaviours
L. Zibecchi, I. Andruchow, E. Ej. Marchesini +2
We present the results of the optical monitoring of 18 southern blazars in the V and R Johnson-Cousins bands. Our main objective is to study the variations in the optical flux and…
Multi-band optical variability on diverse timescales of the TeV blazar TXS 0506+56, the first cosmic neutrino source
Vinit Dhiman, Alok C. Gupta, Rumen Bachev +9
We report the first extensive optical flux and spectral variability study of the TeV blazar TXS 0506+056 on intra-night to long-term timescales using BVRI data collected over 220 n…
Study of variability in long-term multiwavelength optical lightcurves of blazar AO 0235+164
Abhradeep Roy, Alok C. Gupta, Varsha R. Chitnis +9
We present a long-term and intraday variability study on optical multiwaveband () data from the blazar AO 0235+164 collected by various telescopes for 44 years (19…
Disentangling the nature of the prototype radio weak BL Lac: Contemporaneous multifrequency observations of WISE J141046.00 + 740511.2
E. J. Marchesini, V. Reynaldi, F. Vieyro +13
Context. The gamma-ray emitting source WISE J141046.00+740511.2 has been associated with a Fermi-LAT detection by crossmatching with Swift/XRT data. It has shown all the canonical…
Detection of a quasi-periodic oscillation in the optical light curve of the remarkable blazar AO 0235+164
Abhradeep Roy, Varsha R. Chitnis, Alok C. Gupta +8
We present a long term optical band light curve analysis of the gravitationally lensed blazar AO 0235+164 in the time span 1982 - 2019. Several methods of analysis lead to the…