Variability studies of active galactic nuclei from the long-term monitoring program with the Cherenkov Telescope Array Article Swipe
G. Grolleron
,
Josefa Becerra González
,
J. Biteau
,
M. Cerruti
,
R. Grau
,
Lucas Gréaux
,
T. Hovatta
,
J.-P. Lenain
,
E. Lindfors
,
W. Max-Moerbeck
,
Davide Miceli
,
A. Moralejo
,
K. Nilsson
,
E. Pueschel
,
Arkadipta Sarkar
,
Sofia Suutarinen
·
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.48550/arxiv.2309.12157
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.48550/arxiv.2309.12157
Blazars are active galactic nuclei (AGN) with a relativistic jet oriented toward the observer. This jet is composed of accelerated particles which can display emission over the entire electromagnetic spectrum. Spectral variability has been observed on short- and long-time scales in AGN, with a power spectral density (PSD) that can show a break at frequencies below the well-known red-noise process. This break frequency in the PSD has been observed in X-rays to scale with the accretion regime and the mass of the central black hole. It is expected that a break could also be seen in the very-high-energy gamma rays, but constraining the shape of the PSD in these wavelengths has not been possible with the current instruments. The Cherenkov Telescope Array (CTA) will be more sensitive by a factor of five to ten depending on energy than the current generation of imaging atmospheric Cherenkov telescopes, therefore it will be possible with CTA to reconstruct the PSD with a high accuracy, bringing new information about AGN variability. In this work, we focus on the AGN long-term monitoring program planned with CTA. The program is proposed to begin with early-start observing campaigns with CTA precursors. This would allow us to probe longer time scales on the AGN PSD.
Related Topics
Concepts
Physics
Active galactic nucleus
Cherenkov radiation
Cherenkov Telescope Array
Blazar
Astrophysics
Telescope
Accretion (finance)
Astrophysical jet
Spectral density
Observatory
Astronomy
Redshift
Electromagnetic spectrum
Spectral slope
Gamma ray
Spectral line
Galaxy
Detector
Optics
Mathematics
Statistics
Metadata
- Type
- preprint
- Language
- en
- Landing Page
- https://doi.org/10.48550/arxiv.2309.12157
- OA Status
- green
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4386977865
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4386977865Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.48550/arxiv.2309.12157Digital Object Identifier
- Title
-
Variability studies of active galactic nuclei from the long-term monitoring program with the Cherenkov Telescope ArrayWork title
- Type
-
preprintOpenAlex work type
- Language
-
enPrimary language
- Publication year
-
2023Year of publication
- Publication date
-
2023-09-21Full publication date if available
- Authors
-
G. Grolleron, Josefa Becerra González, J. Biteau, M. Cerruti, R. Grau, Lucas Gréaux, T. Hovatta, J.-P. Lenain, E. Lindfors, W. Max-Moerbeck, Davide Miceli, A. Moralejo, K. Nilsson, E. Pueschel, Arkadipta Sarkar, Sofia SuutarinenList of authors in order
- Landing page
-
https://doi.org/10.48550/arxiv.2309.12157Publisher landing page
- Open access
-
YesWhether a free full text is available
- OA status
-
greenOpen access status per OpenAlex
- OA URL
-
https://doi.org/10.48550/arxiv.2309.12157Direct OA link when available
- Concepts
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Physics, Active galactic nucleus, Cherenkov radiation, Cherenkov Telescope Array, Blazar, Astrophysics, Telescope, Accretion (finance), Astrophysical jet, Spectral density, Observatory, Astronomy, Redshift, Electromagnetic spectrum, Spectral slope, Gamma ray, Spectral line, Galaxy, Detector, Optics, Mathematics, StatisticsTop concepts (fields/topics) attached by OpenAlex
- Cited by
-
0Total citation count in OpenAlex
- Related works (count)
-
10Other works algorithmically related by OpenAlex
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