| Title: |
Multiwavelength characterization of two flaring blazars: insight into the emission region of intermediate-synchrotron-peaked BL Lacs |
| Authors: |
Abe, H.; Abe, S.; Artero, M.; Kerszberg, D.; Kluge, G. W.; Kobayashi, Y.; Kouch, P. M.; Kubo, H.; Kushida, J.; Lezáun, M. Láinez; Lamastra, A.; Lelas, D.; Leone, F.; Asano, K.; Lindfors, E.; Linhoff, L.; Lombardi, S.; Longo, F.; López-Coto, R.; López-Moya, M.; López-Oramas, A.; Loporchio, S.; Lorini, A.; Lyard, E.; Baack, D.; de Oliveira Fraga, B. Machado; Majumdar, P.; Makariev, M.; Maneva, G.; Mang, N.; Manganaro, M.; Mangano, S.; Mannheim, K.; Mariotti, M.; Martínez, M.; Babić, A.; Martínez-Chicharro, M.; Mas-Aguilar, A.; Mazin, D.; Menchiari, S.; Mender, S.; Mićanović, S.; Miceli, D.; Miener, T.; Miranda, J. M.; Mirzoyan, R.; Baquero, A.; González, M. Molero; Molina, E.; Mondal, H. A.; Moralejo, A.; Morcuende, D.; Nakamori, T.; Nanci, C.; Nava, L.; Neustroev, V.; Nickel, L.; de Almeida, U. Barres; Nievas Rosillo, M.; Nigro, C.; Nikolić, L.; Nilsson, K.; Nishijima, K.; Ekoume, T. Njoh; Noda, K.; Nozaki, S.; Ohtani, Y.; Oka, T.; Barrio, J. A.; Okumura, A.; Otero-Santos, J.; Paiano, S.; Palatiello, M.; Paneque, D.; Paoletti, R.; Paredes, J. M.; Pavletić, L.; Pavlović, D.; Persic, M.; Batković, I.; Pihet, M.; Pirola, G.; Podobnik, F.; Prada Moroni, P. G.; Prandini, E.; Principe, G.; Priyadarshi, C.; Rhode, W.; Ribó, M.; Rico, J.; Baxter, J.; Righi, C.; Sahakyan, N.; Saito, T.; Sakurai, S.; Satalecka, K.; Saturni, F. G.; Schleicher, B.; Schmidt, K.; Schmuckermaier, F.; Schubert, J. L.; González, J. Becerra; Schweizer, T.; Sciaccaluga, A.; Sitarek, J.; Sliusar, V.; Sobczynska, D.; Spolon, A.; Stamerra, A.; Strišković, J.; Strom, D.; Strzys, M.; Abhir, J.; Bednarek, W.; Suda, Y.; Surić, T.; Suutarinen, S.; Tajima, H.; Takahashi, M.; Takeishi, R.; Tavecchio, F.; Temnikov, P.; Terauchi, K.; Terzić, T.; Bernardini, E.; Teshima, M.; Tosti, L.; Truzzi, S.; Tutone, A.; Ubach, S.; van Scherpenberg, J.; Vazquez Acosta, M.; Ventura, S.; Verguilov, V.; Viale, I.; Bernardos, M.; Vigorito, C. F.; Vitale, V.; Vovk, I.; Walter, R.; Will, M.; Wunderlich, C.; Yamamoto, T.; MAGIC Collaboration; Fermi-LAT Collaboration; Bernete, J.; Berti, A.; Besenrieder, J.; Bigongiari, C.; Biland, A.; Blanch, O.; Bonnoli, G.; Acciari, V. A.; Bošnjak, Ž.; Burelli, I.; Busetto, G.; Campoy-Ordaz, A.; Carosi, A.; Carosi, R.; Carretero-Castrillo, M.; Castro-Tirado, A. J.; Cerasole, D.; Ceribella, G.; Agudo, I.; Chai, Y.; Chilingarian, A.; Cifuentes, A.; Cikota, S.; Colombo, E.; Contreras, J. L.; Cortina, J.; Covino, S.; D'Amico, G.; D'Elia, V.; Aniello, T.; Da Vela, P.; Dazzi, F.; De Angelis, A.; De Lotto, B.; Del Popolo, A.; Delfino, M.; Delgado, J.; Mendez, C. Delgado; Depaoli, D.; Di Pierro, F.; Ansoldi, S.; Di Venere, L.; Dominis Prester, D.; Donini, A.; Dorner, D.; Doro, M.; Elsaesser, D.; Emery, G.; Escudero, J.; Fariña, L.; Fattorini, A.; Antonelli, L. A.; Foffano, L.; Font, L.; Fröse, S.; Fukami, S.; Fukazawa, Y.; López, R. J. García; Garczarczyk, M.; Gasparyan, S.; Gaug, M.; Paiva, J. G. Giesbrecht; Engels, A. Arbet; Giglietto, N.; Giordano, F.; Gliwny, P.; Godinović, N.; Grau, R.; Green, D.; Green, J. G.; Hadasch, D.; Hahn, A.; Hassan, T.; Arcaro, C.; Heckmann, L.; Herrera, J.; Hrupec, D.; Hütten, M.; Imazawa, R.; Inada, T.; Iotov, R.; Ishio, K.; Martínez, I. Jiménez; Jormanainen, J. |
| Source: |
Proceedings of Science / International School for Advanced Studies (ICRC2023), 725 (2023). doi:10.22323/1.444.0725 ; 38th International Cosmic Ray Conference, ICRC2023, Nagoya, Japan, 2023-07-26 - 2023-08-03 |
| Publisher Information: |
SISSA |
| Publication Year: |
2023 |
| Collection: |
DESY Publication Database (PUBDB) |
| Subject Terms: |
info:eu-repo/classification/ddc/530; energy: high; detector: optical; gamma ray: emission; radio wave; synchrotron; ultraviolet; GeV; blazar; GLAST; TeV; gamma ray: VHE; gamma ray: energy spectrum; X-ray; spectral; variability; satellite; MAGIC |
| Subject Geographic: |
DE |
| Description: |
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. |
| Document Type: |
conference object |
| Language: |
English |
| ISSN: |
1824-8039 |
| Relation: |
info:eu-repo/semantics/altIdentifier/issn/1824-8039 |
| Availability: |
https://bib-pubdb1.desy.de/record/593117; https://bib-pubdb1.desy.de/search?p=id:%22PUBDB-2023-05301%22 |
| Rights: |
info:eu-repo/semantics/openAccess |
| Accession Number: |
edsbas.F82DA106 |
| Database: |
BASE |