activity
19972024
most citedSub-milliarcsecond Imaging of Quasars and Active Galactic Nuclei. IV. Fine Scale Structure

390 citations · 3.5k across the 56 of their papers we have counts for

collaborators

56 papers

astro-ph.HE2024★ 8 cited

Revisiting radio variability of the blazar 3C 454.3

Ashutosh Tripathi, Alok C. Gupta, Krista Lynne Smith +7

We examine lengthy radio light curves of the flat spectrum radio galaxy 3C 454.3 for possible quasi-periodic oscillations (QPOs). The data used in this work were collected at five…

astro-ph.HE2024

Spectral Energy Distribution Variability of the Blazar OJ 287 during 2009-2021

Wenwen Zuo, Alok C. Gupta, Minfeng Gu +11

Using nearly simultaneous radio, near-infrared, optical, and ultraviolet data collected since 2009, we constructed 106 spectral energy distributions (SEDs) of the blazar OJ 287. Th…

astro-ph.HE2023★ 9 cited

Multi-band Cross-correlated Radio Variability of the Blazar 3C 279

Krishna Mohana A, Alok C. Gupta, Alan P. Marscher +18

We present the results of our study of cross-correlations between long-term multi-band observations of the radio variability of the blazar 3C 279. More than a decade (2008-2022) of…

astro-ph.HE2022★ 10 cited

MOJAVE XXI. Decade-long linear polarization variability in AGN jets at parsec scales

D. I. Zobnina, H. D. Aller, M. F. Aller +6

Using stacking of images obtained at different epochs, we studied the variability properties of linear polarization of active galactic nucleus (AGN) jets on parsec-scales. Our samp…

astro-ph.HE2022★ 38 cited

MOJAVE. XX. Persistent Linear Polarization Structure in Parsec-scale AGN Jets

A. B. Pushkarev, M. F. Aller, H. D. Aller +6

We analysed the parsec-scale linear polarization properties of 436 active galactic nuclei (AGN) based on 15 GHz polarimetric Very Long Baseline Array (VLBA) observations. We presen…

astro-ph.GA2018★ 12 cited

Opacity, variability and kinematics of AGN jets

Alexander Kutkin, Ilya Pashchenko, Kirill Sokolovsky +3

Synchrotron self-absorption in active galactic nuclei (AGN) jets manifests itself as a time delay between flares observed at high and low radio frequencies. It is also responsible…