activity
20222026
most citedEnsemble power spectral density of SDSS quasars in UV/optical bands

16 citations · 39 across the 12 of their papers we have counts for

collaborators

13 papers

astro-ph.GA2026

VAR-PZnn: A machine-learning framework for AGN photometric redshifts using color and variability-based features

S. Satheesh-Sheeba, P. Sánchez-Sáez, R. J. Assef +39

Photometric redshift estimation for active galactic nuclei (AGNs) remains a fundamental challenge for current and upcoming large-scale photometric surveys. Traditional spectral ene…

astro-ph.IM2026

Toward decision-aware AI for LSST-scale time-domain astronomy

C. R. Bom, A. Mahabal, F. Bianco +27

The Vera C. Rubin Observatory's Legacy Survey of Space and Time (LSST) will generate approximately (10^7) alerts per night, pushing time-domain astronomy beyond pipelines that trea…

astro-ph.GA2026

AGILE: an end-to-end Rubin-LSST simulation of AGNs, galaxies, and stars I. Software description and first data release

A. Viitanen, A. Bongiorno, I. Saccheo +37

Contemporary large-scale surveys such as the Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST) and Euclid present an unprecedented discovery potential for studying A…

astro-ph.IM2026

Euclid: An automated system to match Rubin transient alerts to Euclid observations

C. Duffy, I. M. Hook, C. M. Gutierrez +150

The Vera C. Rubin observatory is expected to produce 10 million transient alerts per night in ugrizy filters, whilst Euclid is a visible to near-infrared space telescope engaged in…

astro-ph.GA2026★ 1 cited

Scavenger hunt: Selection of obscured active galactic nuclei combining multiband optical variability and colors

Demetra De Cicco, Stefano Cavuoti, Maurizio Paolillo +3

As wide-field optical surveys such as Vera Rubin Observatory's Legacy Survey of Space and Time (LSST) begin operations, time-domain astronomy is facing a data revolution, paving th…

astro-ph.IM2025

Continuous Wide-Field Optical Monitoring for Very Early-Phase Transient Discovery

Massimo Della Valle, Maria Teresa Botticella, Enrico Cappellaro +40

The study of transient phenomena in a multimessenger context is expected to remain a major pillar of astrophysical discovery in the decades ahead. Supernovae, Kilonovae, Black-Hole…

astro-ph.GA2025★ 1 cited

The ensemble broad-frequency power spectrum of Stripe-82 quasars from multiple surveys

Vincenzo Petrecca, Iossif E. Papadakis, Maurizio Paolillo +5

Variability is a striking features of quasars, observed at all timescales wavelengths. Studying its properties and the correlations with the physical parameters (e.g. black hole ma…

astro-ph.GA2025★ 9 cited

Selection of optically variable active galactic nuclei via a random forest algorithm

Demetra De Cicco, Gaetano Zazzaro, Stefano Cavuoti +5

Context. A defining characteristic of active galactic nuclei (AGN) that distinguishes them from other astronomical sources is their stochastic variability, which is observable acro…

astro-ph.SR2025

Euclid: Quick Data Release (Q1) -- Photometric studies of known transients

C. Duffy, E. Cappellaro, M. T. Botticella +174

We report on serendipitous Euclid observations of previously known transients, using the Euclid Q1 data release. By cross-matching with the Transient Name Server (TNS) we identify…

astro-ph.HE2024★ 3 cited

The extremes of AGN variability: outbursts, deep fades, changing looks, exceptional spectral states, and semi-periodicities

S. Komossa, D. Grupe, P. Marziani +16

The extremes of Active Galactic Nuclei (AGN) variability offer valuable new insights into the drivers and physics of AGN. We discuss some of the most extreme cases of AGN variabili…

astro-ph.GA2024★ 16 cited

Ensemble power spectral density of SDSS quasars in UV/optical bands

Vincenzo Petrecca, Iossif Papadakis, Maurizio Paolillo +2

Context: Quasar variability has proven to be a powerful tool to constrain the properties of their inner engine and the accretion process onto supermassive black holes. Correlations…

astro-ph.GA2023★ 1 cited

The LSST AGN Data Challenge: Selection methods

Đorđe V. Savić, Isidora Jankov, Weixiang Yu +12

Development of the Rubin Observatory Legacy Survey of Space and Time (LSST) includes a series of Data Challenges (DC) arranged by various LSST Scientific Collaborations (SC) that a…

astro-ph.IM2022★ 8 cited

Rubin Observatory LSST Transients and Variable Stars Roadmap

Kelly M. Hambleton, Federica B. Bianco, Rachel Street +79

The Vera C. Rubin Legacy Survey of Space and Time holds the potential to revolutionize time domain astrophysics, reaching completely unexplored areas of the Universe and mapping va…