Home > Publications database > Multiwavelength characterization of two flaring blazars: insight into the emission region of intermediate-synchrotron-peaked BL Lacs > print

001     593117
005     20250724132156.0
024 7 _ |a 10.22323/1.444.0725
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037 _ _ |a PUBDB-2023-05301
041 _ _ |a English
082 _ _ |a 530
100 1 _ |a Abe, H.
|b 0
111 2 _ |a 38th International Cosmic Ray Conference
|g ICRC2023
|c Nagoya
|d 2023-07-26 - 2023-08-03
|w Japan
245 _ _ |a Multiwavelength characterization of two flaring blazars: insight into the emission region of intermediate-synchrotron-peaked BL Lacs
260 _ _ |a Trieste
|c 2023
|b SISSA
300 _ _ |a 10
336 7 _ |a CONFERENCE_PAPER
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336 7 _ |a Conference Paper
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336 7 _ |a Journal Article
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336 7 _ |a INPROCEEDINGS
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490 0 _ |a 2682081
|2 Author
520 _ _ |a The blazars B2 1811+31 and GB6 J1058+2817 were found to be in flaring state during 2020 and 2021, respectively. The high states of the sources were registered by the Fermi-LAT at energiesbelow 100 GeV, triggering observations at higher energies with the MAGIC telescopes, in theUV/X rays with the Swift satellite and with ground-based radio and optical telescopes. Theobservations in the very-high-energy (VHE, 100 GeV < E < 100 TeV) gamma-ray band led tothe first detection of both sources in this energy range. A long-term gamma-ray lightcurve wasderived using Fermi-LAT data, identifying the time intervals in which the two sources persistedin a quiet state. Archival data collected in the radio to X-ray wavelengths showed that the twosources exhibited intermediate-synchrotron-peaked BL Lac behaviors in their low states, ratherrare sources in the TeV sky. The high state of the two sources was deeply investigated thanks to thecoverage provided by multi-wavelength (MWL) observational campaigns. In this contribution,we present the results of the gamma-ray observations which are included in a MWL observationalcampaign organized on these sources during their high-states. We discuss the flare spectralproperties and temporal variability. In the high-energy gamma band, sub-daily-scale variabilityand strong spectral hardening give evidence for compact emission regions responsible for theradiative output at high energies during the flare.
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650 _ 7 |a energy: high
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650 _ 7 |a detector: optical
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650 _ 7 |a gamma ray: emission
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650 _ 7 |a TeV
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650 _ 7 |a gamma ray: VHE
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650 _ 7 |a gamma ray: energy spectrum
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650 _ 7 |a spectral
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650 _ 7 |a variability
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700 1 _ |a Abe, S.
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700 1 _ |a Abhir, J.
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700 1 _ |a Acciari, V. A.
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700 1 _ |a Agudo, I.
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700 1 _ |a Aniello, T.
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700 1 _ |a Ansoldi, S.
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700 1 _ |a Antonelli, L. A.
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700 1 _ |a Engels, A. Arbet
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700 1 _ |a Arcaro, C.
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700 1 _ |a Artero, M.
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700 1 _ |a Asano, K.
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700 1 _ |a Baack, D.
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700 1 _ |a de Almeida, U. Barres
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700 1 _ |a Batković, I.
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700 1 _ |a González, J. Becerra
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700 1 _ |a Giglietto, N.
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700 1 _ |a Gliwny, P.
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700 1 _ |a Godinović, N.
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700 1 _ |a Grau, R.
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700 1 _ |a Green, D.
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700 1 _ |a Green, J. G.
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700 1 _ |a Paoletti, R.
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700 1 _ |a Paredes, J. M.
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700 1 _ |a Pavletić, L.
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700 1 _ |a Pavlović, D.
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700 1 _ |a Persic, M.
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700 1 _ |a Pihet, M.
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