Search for Kink Events in Variable Fermi-LAT Blazars

P. Peñil; H. Zhang; J. Otero-Santos; M. Ajello; S. Buson; S. Adhikari; A. Rico; J. Escudero Pedrosa; I. Agudo; D. Morcuende; A. Sota; V. Casanova; F. J. Aceituno

arXiv · 2504.10308

Search for Kink Events in Variable Fermi-LAT Blazars

P. Peñil·H. Zhang·J. Otero-Santos·M. Ajello·S. Buson·S. Adhikari·A. Rico·J. Escudero Pedrosa·I. Agudo·D. Morcuende·A. Sota·V. Casanova·F. J. Aceituno

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Abstract

This study explores the detection of Quasi-Periodic Oscillations (QPOs) in blazars as a method to identify kink events within their jets, utilizing both $\gamma$-ray and polarized light observations. Focusing on a sample of 9 blazars, we analyze $\gamma$-ray light curves to identify significant QPOs. In addition to $\gamma$-ray data, we incorporated polarized light data corresponding to the same temporal segments to cross-validate the presence of QPOs. However, the limited availability of comprehensive polarized data restricted our ability to perform a thorough analysis across all datasets. Despite these limitations, our analysis reveals a segment where QPOs in polarized light coincided with those observed in $\gamma$-rays, providing preliminary evidence supporting the kink origin of these oscillations.

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P. Peñil, H. Zhang, J. Otero-Santos, M. Ajello, S. Buson, S. Adhikari, A. Rico, J. Escudero Pedrosa, I. Agudo, D. Morcuende, A. Sota, V. Casanova, F. J. Aceituno. 2025-04-14. Search for Kink Events in Variable Fermi-LAT Blazars. https://arxiv.org/abs/2504.10308

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