activity
20022026
most citedSteps Toward Determination of the Size and Structure of the Broad-Line Region in Active Galactic Nuclei. XVI. A Thirteen-Year Study of Spectral Variability in NGC 5548

201 citations · 488 across the 26 of their papers we have counts for

collaborators
Showing 2023Show all

2 papers · 1 filter

astro-ph.HE2023

Extreme photometric and polarimetric variability of blazar S4 0954+65 at its maximum optical and -ray brightness levels

C. M. Raiteri, M. Villata, M. I. Carnerero +64

In 2022 the BL Lac object S4 0954+65 underwent a major variability phase, reaching its historical maximum brightness in the optical and -ray bands. We present optical photometri…

astro-ph.HE2023★ 7 cited

Optical study of the polar BM CrB in low accretion state

A. I. Kolbin, N. V. Borisov, A. N. Burenkov +3

This paper presents a spectral and photometric study of the poorly studied polar BM CrB. Three states of the polar brightness and signs of transition from one-pole to two-pole accr…