Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Bidzina Kapanadze"'
Autor:
Bidzina Kapanadze
Publikováno v:
Universe, Vol 9, Iss 7, p 344 (2023)
BL Lac objects are active galactic nuclei notable for a beamed nonthermal radiation, which is generated in one of the relativistic jets forming a small angle to the observer’s line-of-sight. The broadband spectra of BL Lacs show a two-component spe
Externí odkaz:
https://doaj.org/article/d4d28f793c17440bb8cceb50805c7c70
Autor:
Bidzina Kapanadze
Publikováno v:
Galaxies, Vol 6, Iss 4, p 125 (2018)
BL Lacertae objects constitute a rare class of active galactic nuclei with extreme observational features attributed to the Doppler-boosted emission from a relativistic jet, closely aligned to our line-of-sight. Their spectral energy distribution, ex
Externí odkaz:
https://doaj.org/article/97991e1e3f604fb3a4aff5b114b9ac99
Autor:
Bidzina Kapanadze
Publikováno v:
Galaxies, Vol 6, Iss 1, p 37 (2018)
The study of multi-wavelength flux variability in BL Lacertae objects is very important to discern unstable processes and emission mechanisms underlying their extreme observational features. While the innermost regions of these objects are not access
Externí odkaz:
https://doaj.org/article/46275dc77984436d8e20d3fbe86b73be
Autor:
Bidzina Kapanadze
The TeV-detected nearby (z = 0.034) blazar Markarian 501 is prominent by the extreme X-ray and TeV-band variability on the diverse timescales ranging from years down to a few minutes. Since 2021 March, we observe a significantly enhanced X-ray activi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b19510f7c6aabb190ec85063fcd6bc33
Autor:
Bidzina Kapanadze
BL Lacs for represent an extreme blazar subclass of with a relativistic jet closely aligned with our line-of-sight and characterized by non-thermal continuum emission across the entire spectrum, superluminal motion, almost featureless optical spectra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1afbc00580e9020fbc0023a9c9c1b65d
Publikováno v:
Astrophysics and Space Science. 365
In this paper, we present the timing and spectral results for the seven distant and poorly investigated BL Lacertae sources with redshifts $z\gtrsim 0.5$, using the archival data obtained with the Swift and other multifrequency instruments during 200
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f4ee945e108b9cc282466b807c10fc8
https://doi.org/10.1007/s10509-020-03778-6
https://doi.org/10.1007/s10509-020-03778-6
Publikováno v:
Monthly Notices of the Royal Astronomical Society: Letters. 461:L26-L31
We present an X-ray flaring activity of 1ES 1959+650 in 2015 August-2016 January, which was the most powerful and prolonged during the 10.75 yr period since the start of its monitoring with X-ray Telescope onboard Swift. A new highest historical 0.3-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9f64389839675884bc643b1f84fc6105
https://doi.org/10.1093/mnrasl/slw054
https://doi.org/10.1093/mnrasl/slw054
Publikováno v:
New Astronomy. 79:101393
BL Lacertae objects (BL Lacs) constitute a rare class of active galactic nuclei (AGNs) with the extreme observational features attributed to the Doppler-boosted emission from the relativistic jets, closely aligned along our line-of-sight. The spectra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c75488fbf80ed6f8708d9f2ec4522c16
https://doi.org/10.1016/j.newast.2020.101393
https://doi.org/10.1016/j.newast.2020.101393
Autor:
Bidzina Kapanadze, A. Gurchumelia, M. F. Aller, Oleg Kharshiladze, Hugh D. Aller, Philip A. Hughes, P. Romano, S. Vercellone, Daniela Dorner
Publikováno v:
The Astrophysical Journal Supplement Series. 247:27
We present the results from the timing and spectral study of Mrk\,421 based mainly on the \emph{Swift} data in the X-ray energy range obtained during the time interval 2015\,December--2018\,April. The most extreme X-ray flaring activity on the long-t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::24dd2e905f74a5ddec6aa5a07d9d53e0
https://doi.org/10.3847/1538-4365/ab6322
https://doi.org/10.3847/1538-4365/ab6322
Publikováno v:
Proceedings of XII Multifrequency Behaviour of High Energy Cosmic Sources Workshop — PoS(MULTIF2017).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5189481f32c39a296afde8f31bd1ffa5
https://doi.org/10.22323/1.306.0033
https://doi.org/10.22323/1.306.0033