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DC Field | Value | Language |
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dc.citation.startPage | A100 | - |
dc.citation.title | ASTRONOMY & ASTROPHYSICS | - |
dc.citation.volume | 682 | - |
dc.contributor.author | Pedrosa, J. Escudero | - |
dc.contributor.author | Agudo, I. | - |
dc.contributor.author | Tramacere, A. | - |
dc.contributor.author | Marscher, A. P. | - |
dc.contributor.author | Jorstad, S. | - |
dc.contributor.author | Weaver, Z. R. | - |
dc.contributor.author | Casadio, C. | - |
dc.contributor.author | Thum, C. | - |
dc.contributor.author | Myserlis, I. | - |
dc.contributor.author | Fuentes, A. | - |
dc.contributor.author | Traianou, E. | - |
dc.contributor.author | Kim, Jae-Young | - |
dc.contributor.author | Kramer, J. | - |
dc.contributor.author | Lopez-Coto, R. | - |
dc.contributor.author | D'Ammando, F. | - |
dc.contributor.author | Bernardos, M. | - |
dc.contributor.author | Bonnoli, G. | - |
dc.contributor.author | Blinov, D. A. | - |
dc.contributor.author | Borman, G. A. | - |
dc.contributor.author | Grishina, T. S. | - |
dc.contributor.author | Hagen-Thorn, V. A. | - |
dc.contributor.author | Kopatskaya, E. N. | - |
dc.contributor.author | Larionova, E. G. | - |
dc.contributor.author | Larionov, V. M. | - |
dc.contributor.author | Larionova, L. V. | - |
dc.contributor.author | Morozova, D. A. | - |
dc.contributor.author | Savchenko, S. S. | - |
dc.contributor.author | Troitskiy, I. S. | - |
dc.contributor.author | Troitskaya, Y. V. | - |
dc.contributor.author | Vasilyev, A. A. | - |
dc.date.accessioned | 2024-09-11T14:05:09Z | - |
dc.date.available | 2024-09-11T14:05:09Z | - |
dc.date.created | 2024-09-11 | - |
dc.date.issued | 2024-02 | - |
dc.description.abstract | Context. Blazar AO 0235+164, located at a redshift of z = 0.94, has undergone several sharp multi-spectral-range flaring episodes over recent decades. In particular, the episodes that peaked in 2008 and 2015, which were subject to extensive multi-wavelength coverage, exhibited an interesting behavior. Aims. We study the actual origin of these two observed flares by constraining the properties of the observed photo-polarimetric variability as well as of the broadband spectral energy distribution and the observed time-evolution behavior of the source. We use ultra-high-resolution total-flux and polarimetric very-long-baseline interferometry (VLBI) imaging. Methods. The analysis of VLBI images allowed us to constrain kinematic and geometrical parameters of the 7 mm jet. We used the discrete correlation function to compute the statistical correlation and the delays between emission at different spectral ranges. The multi-epoch modeling of the spectral energy distributions allowed us to propose specific models of the emission; in particular, with the aim to model the unusual spectral features observed in this source in the X-ray region of the spectrum during strong multi spectral-range flares. Results. We find that these X-ray spectral features can be explained by an emission component originating in a separate particle distribution than the one responsible for the two standard blazar bumps. This is in agreement with the results of our correlation analysis, where we did not find a strong correlation between the X-ray and the remaining spectral ranges. We find that both external Compton-dominated and synchrotron self-Compton-dominated models are able to explain the observed spectral energy distributions. However, the synchrotron self-Compton models are strongly favored by the delays and geometrical parameters inferred from the observations. | - |
dc.identifier.bibliographicCitation | ASTRONOMY & ASTROPHYSICS, v.682, pp.A100 | - |
dc.identifier.doi | 10.1051/0004-6361/202346885 | - |
dc.identifier.issn | 0004-6361 | - |
dc.identifier.scopusid | 2-s2.0-85184950838 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/83724 | - |
dc.identifier.wosid | 001158784600005 | - |
dc.language | 영어 | - |
dc.publisher | EDP SCIENCES S A | - |
dc.title | Repeating flaring activity of the blazar AO 0235+164 | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Astronomy & Astrophysics | - |
dc.relation.journalResearchArea | Astronomy & Astrophysics | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | polarization | - |
dc.subject.keywordAuthor | radiation mechanisms: general | - |
dc.subject.keywordAuthor | relativistic processes | - |
dc.subject.keywordAuthor | galaxies: jets | - |
dc.subject.keywordAuthor | accretion, accretion disks | - |
dc.subject.keywordAuthor | astroparticle physics | - |
dc.subject.keywordPlus | X-RAY | - |
dc.subject.keywordPlus | INNER JET | - |
dc.subject.keywordPlus | SWIFT | - |
dc.subject.keywordPlus | ACCELERATION | - |
dc.subject.keywordPlus | QUASARS | - |
dc.subject.keywordPlus | CALIBRATION | - |
dc.subject.keywordPlus | KINEMATICS | - |
dc.subject.keywordPlus | WEBT | - |
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