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- Alex G Markowitz
- Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences, ul. Bartycka 18, PL-00-716 Warszawa, Poland
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- Krzysztof Nalewajko
- Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences, ul. Bartycka 18, PL-00-716 Warszawa, Poland
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- Gopal Bhatta
- Institute of Nuclear Physics, Polish Academy of Sciences, PL-31-342 Kraków, Poland
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- Gulab C Dewangan
- Inter-University Centre for Astronomy and Astrophysics, Post Bag 4, Ganeshkhind, Pune 411007, India
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- Sunil Chandra
- Tata Institute of Fundamental Research, Mumbai 400005, India
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- Daniela Dorner
- University of Würzburg, Institute for Theoretical Physics and Astrophysics, Emil-Fischer-Straße 31, Campus Hubland Nord, D-97074 Würzburg, Germany
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- Bernd Schleicher
- University of Würzburg, Institute for Theoretical Physics and Astrophysics, Emil-Fischer-Straße 31, Campus Hubland Nord, D-97074 Würzburg, Germany
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- Urszula Pajdosz-Śmierciak
- Astronomical Observatory of the Jagiellonian University, ul. Orla 171, PL-30-244 Kraków, Poland
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- Łukasz Stawarz
- Astronomical Observatory of the Jagiellonian University, ul. Orla 171, PL-30-244 Kraków, Poland
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- Staszek Zola
- Astronomical Observatory of the Jagiellonian University, ul. Orla 171, PL-30-244 Kraków, Poland
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- Michał Ostrowski
- Astronomical Observatory of the Jagiellonian University, ul. Orla 171, PL-30-244 Kraków, Poland
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- Daniele Carosati
- EPT Observatories, Tijarafe, E-38780 La Palma, Spain
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- Saikruba Krishnan
- Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences, ul. Bartycka 18, PL-00-716 Warszawa, Poland
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- Rumen Bachev
- Institute of Astronomy and National Astronomical Observatory, Bulgarian Academy of Sciences, 72 Tsarigradsko Shosse Blvd., 1784 Sofia, Bulgaria
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- Erika Benítez
- Universidad Nacional Autónoma de México, Instituto de Astronomía, AP 70-264, CDMX 04510, Mexico
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- Kosmas Gazeas
- Section of Astrophysics, Astronomy and Mechanics, Department of Physics, National and Kapodistrian University of Athens, GR-15784 Zografos, Athens, Greece
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- David Hiriart
- Instituto de Astronomía, Universidad Nacional Autónoma de México, AP106, 22860 Ensenada, BC, Mexico
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- Shao-Ming Hu
- Shandong Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Sciences, School of Space Science and Physics, Shandong University, Weihai, Shandong 264209, China
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- Valeri Larionov
- Astronomical Institute, St. Petersburg State University, 198504, St. Petersburg, Russia
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- Alessandro Marchini
- University of Siena, Department of Physical Sciences, Earth and Environment, Astronomical Observatory, Via Roma 56, I-53100 Siena, Italy
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- Katsura Matsumoto
- Osaka Kyoiku University, Institute of Astronomy, 4-698-1 Asahigaoka, Kashiwara 582-8582 Osaka, Japan
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- A A Nikiforova
- Astronomical Institute, St. Petersburg State University, 198504, St. Petersburg, Russia
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- Tapio Pursimo
- Nordic Optical Telescope, Apartado 474, E-38700 Santa Cruz de La Palma, Spain
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- Claudia M Raiteri
- INAF, Osservatorio Astrofisico di Torino, via Osservatorio 20, I-10025 Pino Torinese, Italy
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- Daniel E Reichart
- University of North Carolina at Chapel Hill, Dept. of Physics and Astronomy, Chapel Hill, NC, 27599, USA
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- Diego Rodriguez
- Guadarrama Observatory, E-28430 Alpedrete, Madrid, Spain
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- Evgeni Semkov
- Institute of Astronomy and National Astronomical Observatory, Bulgarian Academy of Sciences, 72 Tsarigradsko Shosse Blvd., 1784 Sofia, Bulgaria
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- Anton Strigachev
- Institute of Astronomy and National Astronomical Observatory, Bulgarian Academy of Sciences, 72 Tsarigradsko Shosse Blvd., 1784 Sofia, Bulgaria
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- Yuki Sugiura
- Osaka Kyoiku University, Institute of Astronomy, 4-698-1 Asahigaoka, Kashiwara 582-8582 Osaka, Japan
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- Massimo Villata
- INAF, Osservatorio Astrofisico di Torino, via Osservatorio 20, I-10025 Pino Torinese, Italy
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- James R Webb
- Department of Physics, Florida International University, 11200 SW 8th St., Miami, FL 33199, USA
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- Axel Arbet-Engels
- ETH Zurich, Institute for Particle Physics and Astrophysics, Otto-Stern-Weg 5, CH-8093 Zurich, Switzerland
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- Dominik Baack
- TU Dortmund, Experimental Physics 5, Otto-Hahn-Str. 4a, D-44227 Dortmund, Germany
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- Matteo Balbo
- University of Geneva, Department of Astronomy, Chemin d’Ecogia 16, CH-1290 Versoix, Switzerland
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- Adrian Biland
- ETH Zurich, Institute for Particle Physics and Astrophysics, Otto-Stern-Weg 5, CH-8093 Zurich, Switzerland
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- Thomas Bretz
- ETH Zurich, Institute for Particle Physics and Astrophysics, Otto-Stern-Weg 5, CH-8093 Zurich, Switzerland
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- Jens Buss
- TU Dortmund, Experimental Physics 5, Otto-Hahn-Str. 4a, D-44227 Dortmund, Germany
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- Laura Eisenberger
- University of Würzburg, Institute for Theoretical Physics and Astrophysics, Emil-Fischer-Straße 31, Campus Hubland Nord, D-97074 Würzburg, Germany
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- Dominik Elsaesser
- TU Dortmund, Experimental Physics 5, Otto-Hahn-Str. 4a, D-44227 Dortmund, Germany
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- Dorothee Hildebrand
- ETH Zurich, Institute for Particle Physics and Astrophysics, Otto-Stern-Weg 5, CH-8093 Zurich, Switzerland
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- Roman Iotov
- University of Würzburg, Institute for Theoretical Physics and Astrophysics, Emil-Fischer-Straße 31, Campus Hubland Nord, D-97074 Würzburg, Germany
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- Adelina Kalenski
- University of Würzburg, Institute for Theoretical Physics and Astrophysics, Emil-Fischer-Straße 31, Campus Hubland Nord, D-97074 Würzburg, Germany
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- Karl Mannheim
- University of Würzburg, Institute for Theoretical Physics and Astrophysics, Emil-Fischer-Straße 31, Campus Hubland Nord, D-97074 Würzburg, Germany
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- Alison Mitchell
- ETH Zurich, Institute for Particle Physics and Astrophysics, Otto-Stern-Weg 5, CH-8093 Zurich, Switzerland
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- Dominik Neise
- ETH Zurich, Institute for Particle Physics and Astrophysics, Otto-Stern-Weg 5, CH-8093 Zurich, Switzerland
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- Maximilian Noethe
- TU Dortmund, Experimental Physics 5, Otto-Hahn-Str. 4a, D-44227 Dortmund, Germany
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- Aleksander Paravac
- University of Würzburg, Institute for Theoretical Physics and Astrophysics, Emil-Fischer-Straße 31, Campus Hubland Nord, D-97074 Würzburg, Germany
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- Wolfgang Rhode
- TU Dortmund, Experimental Physics 5, Otto-Hahn-Str. 4a, D-44227 Dortmund, Germany
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- Vitalii Sliusar
- University of Geneva, Department of Astronomy, Chemin d’Ecogia 16, CH-1290 Versoix, Switzerland
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- Roland Walter
- University of Geneva, Department of Astronomy, Chemin d’Ecogia 16, CH-1290 Versoix, Switzerland
抄録
<jats:title>ABSTRACT</jats:title> <jats:p>The study of short-term variability properties in AGN jets has the potential to shed light on their particle acceleration and emission mechanisms. We report results from a 4-d coordinated multiwavelength campaign on the highly peaked blazar (HBL) Mkn 421 in 2019 January. We obtained X-ray data from AstroSAT, BVRI photometry with the Whole Earth Blazar Telescope (WEBT), and TeV data from First G-APD Cherenkov Telescope to explore short-term multiwavelength variability in this HBL. The X-ray continuum is rapidly variable on time-scales of tens of ks. Fractional variability amplitude increases with energy across the synchrotron hump, consistent with previous studies; we interpret this observation in the context of a model with multiple cells whose emission spectra contain cutoffs that follow a power-law distribution. We also performed time-averaged and time-resolved (time-scales of 6 ks) spectral fits; a broken power-law model fits all spectra well; time-resolved spectral fitting reveals the usual hardening when brightening behaviour. Intra-X-ray cross-correlations yield evidence for the 0.6–0.8 keV band to likely lead the other bands by an average of 4.6 ± 2.6 ks, but only during the first half of the observation. The source displayed minimal night-to-night variability at all wavebands thus precluding significant interband correlations during our campaign. The broad-band SED is modelled well with a standard one-zone leptonic model, yielding jet parameters consistent with those obtained from previous SEDs of this source.</jats:p>
収録刊行物
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- Monthly Notices of the Royal Astronomical Society
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Monthly Notices of the Royal Astronomical Society 513 (2), 1662-1679, 2022-04-07
Oxford University Press (OUP)
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詳細情報 詳細情報について
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- CRID
- 1360861705565123840
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- ISSN
- 13652966
- 00358711
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- データソース種別
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- Crossref
- KAKEN