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Investigating Active Galactic Nuclei variability with the Cherenkov Telescope Array Observatory

Fuente: arXiv

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Dettagli Bibliografici
Autori principali:	Grolleron, G., Biteau, J., Cerruti, M., Grau, R., Gréaux, L., Hovatta, T., Lenain, J. -P., Lindfors, E., Max-Moerbeck, W., Miceli, D., Moralejo, A., Nilsson, K., Prandini, E., Pueschel, E., Kankkunen, S., Gonzalez, J. Becerra, Finke, J., Joshi, M., Morris, P., Petropoulou, M., Sarkar, A., Romano, P., Vercellone, S., Zacharias, M.
Natura:	Preprint
Pubblicazione:	2026
Soggetti:	High Energy Astrophysical Phenomena
Accesso online:	Acceder al recurso
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_version_	1866914243502145536
author	Grolleron, G. Biteau, J. Cerruti, M. Grau, R. Gréaux, L. Hovatta, T. Lenain, J. -P. Lindfors, E. Max-Moerbeck, W. Miceli, D. Moralejo, A. Nilsson, K. Prandini, E. Pueschel, E. Kankkunen, S. Gonzalez, J. Becerra Finke, J. Joshi, M. Morris, P. Petropoulou, M. Sarkar, A. Romano, P. Vercellone, S. Zacharias, M.
author_facet	Grolleron, G. Biteau, J. Cerruti, M. Grau, R. Gréaux, L. Hovatta, T. Lenain, J. -P. Lindfors, E. Max-Moerbeck, W. Miceli, D. Moralejo, A. Nilsson, K. Prandini, E. Pueschel, E. Kankkunen, S. Gonzalez, J. Becerra Finke, J. Joshi, M. Morris, P. Petropoulou, M. Sarkar, A. Romano, P. Vercellone, S. Zacharias, M.
contents	Blazars, a type of active galactic nuclei (AGN) with relativistic jets pointed at the observer, exhibit flux variability across the electromagnetic spectrum due to particle acceleration in their jets. Power spectral density (PSD) studies show breaks at specific frequencies, particularly in X-rays, linked to the accretion regime and black hole mass. However, very-high-energy gamma-ray PSD breaks remain unexplored due to current instrument limitations. The Cherenkov Telescope Array Observatory (CTAO), with up to ten times greater sensitivity compared to current generation instruments, will allow precise PSD reconstruction and unprecedented study of blazar flares. These flares reveal key insights into particle acceleration, photon production, and jet properties. The AGN monitoring and flare programs in CTAO's Key Science Project aim to deepen our understanding of blazar emissions.
format	Preprint
id	arxiv_https___arxiv_org_abs_2601_05995
institution	arXiv
publishDate	2026
record_format	arxiv
spellingShingle	Investigating Active Galactic Nuclei variability with the Cherenkov Telescope Array Observatory Grolleron, G. Biteau, J. Cerruti, M. Grau, R. Gréaux, L. Hovatta, T. Lenain, J. -P. Lindfors, E. Max-Moerbeck, W. Miceli, D. Moralejo, A. Nilsson, K. Prandini, E. Pueschel, E. Kankkunen, S. Gonzalez, J. Becerra Finke, J. Joshi, M. Morris, P. Petropoulou, M. Sarkar, A. Romano, P. Vercellone, S. Zacharias, M. High Energy Astrophysical Phenomena Blazars, a type of active galactic nuclei (AGN) with relativistic jets pointed at the observer, exhibit flux variability across the electromagnetic spectrum due to particle acceleration in their jets. Power spectral density (PSD) studies show breaks at specific frequencies, particularly in X-rays, linked to the accretion regime and black hole mass. However, very-high-energy gamma-ray PSD breaks remain unexplored due to current instrument limitations. The Cherenkov Telescope Array Observatory (CTAO), with up to ten times greater sensitivity compared to current generation instruments, will allow precise PSD reconstruction and unprecedented study of blazar flares. These flares reveal key insights into particle acceleration, photon production, and jet properties. The AGN monitoring and flare programs in CTAO's Key Science Project aim to deepen our understanding of blazar emissions.
title	Investigating Active Galactic Nuclei variability with the Cherenkov Telescope Array Observatory
topic	High Energy Astrophysical Phenomena
url	https://arxiv.org/abs/2601.05995