Insight into the Jet Emission Properties from Long-Term Monitoring of the TeV Blazar PG 1553+113
Year: 2025
Type: conference-paper
Abstract: PG 1553+113 is a distant TeV blazar known for its ~2.2-year periodic gamma-ray signal detected with Fermi-LAT. We present results from a decade-long, multiwavelength monitoring campaign of this source. Our analysis confirms the periodicity in gamma-ray and optical bands; however, no significant periodicity is found at TeV and X-ray energies, based on observations with MAGIC and Swift-XRT, respectively. These findings, combined with a study of variability on different timescales, support a multi-zone emission scenario, as further corroborated by recent IXPE observations. We test a two-zone, synchrotron self-Compton model on 2019 multi-frequency flare data. The long- and short-term variability, along with inter-band correlations from the monitoring, serve as key inputs to constrain the model, reducing the large degrees of freedom. Based on this approach, we propose a set of parameters that effectively describe the PG 1553+113 emitting region responsible for the observed radiation.
DOI: 10.22323/1.501.0813
Authors: Elisa Prandini, "Talvikki Hovatta", "Antonio Stamerra", "Giuseppe Silvestri"
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Funders: Centres de Recerca de Catalunya, Deutsche Forschungsgemeinschaft, Ministry of Education, Culture, Sports, Science and Technology, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, Bundesministerium für Bildung und Forschung, Generalitat de Catalunya, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Max-Planck-Gesellschaft, Hrvatska Zaklada za Znanost, Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro, Ministério da Ciência, Tecnologia, Inovações e Comunicações, Instituto de Astrofísica de Canarias, Japan Society for the Promotion of Science, European Regional Development Fund, Agencia Estatal de Investigación, Institute for Cosmic Ray Research, University of Tokyo
Awards: G1089506725, G1162841413, G1175115578, G1513864939, G1565146803, G1610705197, G195395952, G2064873908, G2119962509, G2209488408, G2262748287, G2462415295, G2486595072, G2673512141, G2771443160, Fermi gases in complex lattice structures: from Dirac points to Spin liquids, G3005324705, G3006871385, G300979063, G320127510, G3384621141, G3408410167, G3413881215, G34346518, G3480869486, G3542716571, G3780874795, G3817602061, G3869365384, G3978510197, G410571670, G419854590, G425668148, G432284461, G4408153509, G451917667, G463062595, G4635689740, G4728539003, G5080475149, Very-high-energy Gamma Ray Astronomy in the Multi-messenger Era, G5352848406, G5539323971, G5600317921, G5894067328, G5915139351, G5967599077, G5969143191, G6256752736, G6309293051, G6313143952, G6465668149, G6603405641, G6656126374, G6714585021, G69051668, G6927395467, G702601109, G7297228001, G7411181859, G7425137858, G7453477117, 古代説話における諸寺縁起の研究, G7840098671, G8017551882, G8461371792, G8623004834, G8684520763, G8699654482, G8752631986, G880499800, G8807499512, G8920101981, G9000375934, G9000376758, G929308097, G994415745
OpenAlex ID: W4414530634
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