activity
20092026
most citedThe Gravitational Universe

144 citations · 469 across the 17 of their papers we have counts for

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Showing 2025Show all

5 papers · 1 filter

astro-ph.GA2025

Identification of periodicities with arbitrary shapes in AGN light curves

Lorenzo Bertassi, Maria Charisi, Riccardo Buscicchio +3

Massive black hole binaries are expected to be observable as periodic AGN in time-domain photometric surveys. Periodicities may originate from different physical processes, includi…

astro-ph.GA2025★ 6 cited

Variability in the supermassive black hole binary candidate SDSS J2320+0024: No evidence of periodic modulation

Fabio Rigamonti, Lorenzo Bertassi, Riccardo Buscicchio +5

Supermassive black hole binaries (SBHBs) are a natural outcome of galaxy mergers, and they are expected to be among the loudest gravitational-wave sources at low frequencies. The s…

astro-ph.GA2025★ 2 cited

Can a time evolving, asymmetric broad line region mimic a massive black hole binary?

Erika Sottocorno, Mary Ogborn, Lorenzo Bertassi +3

Gas within the influence sphere of accreting massive black holes is responsible for the emission of the broad lines observed in optical-UV spectra of unobscured active galactic nuc…

astro-ph.GA2025★ 11 cited

ESPRESSO reveals a single but perturbed broad-line region in the supermassive black hole binary candidate PG 1302-102

Fabio Rigamonti, Paola Severgnini, Erika Sottocorno +12

We present a new, Bayesian analysis of the highest-resolution optical spectrum of the supermassive black hole (SMBH) binary candidate PG 1302-102, obtained with ESPRESSO@VLT (R \si…

astro-ph.GA2025★ 6 cited

Testing compact massive black hole binary candidates through multi-epoch spectroscopy

Lorenzo Bertassi, Erika Sottocorno, Fabio Rigamonti +4

Emission from two massive black holes (MBHs) bound in a close binary is expected to be modulated by different processes, such as the Doppler boost due to the orbital motion, accret…