2 papers
astro-ph.HE2025
Decade-long periodicity study of 2FHL blazars with historical optical data
Sagar Adhikari, Pablo Peñil, Alberto DomÃnguez +3
In our recent investigation, we utilized a century's worth of archival optical data to search for a decade-long periodicity from the blazar PG 1553+113, finding a hint of a 22-yr p…
astro-ph.HE2025
Continuation of an Optical Spectroscopic Campaign of Fermi Blazar Candidates with TNG: Discovery of a New Changing-Look Blazar
N. Ãlvarez Crespo, A. DomÃnguez, V. S. Paliya +3
Context. Blazars are a distinct subclass of active galactic nuclei (AGN), known for their fast variability, high polarization, and intense emission across the electromagnetic spect…