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Title:
Variability studies of active galactic nuclei from the long-term monitoring program with the Cherenkov Telescope Array
Authors:
ID
Grolleron, G.
(Author)
ID
Bhattacharyya, Saptashwa
(Author)
ID
Pérez Romero, Judit
(Author)
ID
Stanič, Samo
(Author)
ID
Vodeb, Veronika
(Author)
ID
Vorobiov, Serguei
(Author)
ID
Zavrtanik, Danilo
(Author)
ID
Zavrtanik, Marko
(Author)
ID
Živec, Miha
(Author), et al.
Files:
ICRC2023_856.pdf
(3,48 MB)
MD5: 17BFC4F750FB089E8318396B502A00C5
icrc38_authors_clean.pdf
(498,06 KB)
MD5: 2B95DB2FB542C235164543ACA2094978
https://pos.sissa.it/444
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Language:
English
Work type:
Unknown
Typology:
1.08 - Published Scientific Conference Contribution
Organization:
UNG - University of Nova Gorica
Abstract:
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.
Keywords:
Cherenkov Telescope Array
,
CTA
,
dark matter
,
standard model
,
dwarf spheroidal galaxies
Publication status:
Published
Publication version:
Version of Record
Publication date:
01.01.2023
Year of publishing:
2023
Number of pages:
str. 1-8
PID:
20.500.12556/RUNG-8457-8c30dd43-f63d-ad1e-2729-4ee4a6b5b55f
COBISS.SI-ID:
165856515
UDC:
539.1
ISSN on article:
1824-8039
NUK URN:
URN:SI:UNG:REP:O8RHUUD6
Publication date in RUNG:
26.09.2023
Views:
2016
Downloads:
10
Metadata:
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Record is a part of a proceedings
Title:
38th International Cosmic Ray Conference [also] ICRC2023
COBISS.SI-ID:
162195971
Record is a part of a journal
Title:
Proceedings of science
Shortened title:
Pos proc. sci.
Publisher:
Sissa
ISSN:
1824-8039
COBISS.SI-ID:
20239655
Document is financed by a project
Funder:
ARRS - Slovenian Research Agency
Project number:
P1-0031
Name:
Večglasniška astrofizika
Licences
License:
CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:
http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:
The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
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