Fast Optical Variability of the TeV Blazar PKS 1725+123 Observed by SVOM-VT and Insights from Multi-wavelength Follow-up Observations

arXiv:2606.21966 · astro-ph.HE · Submitted 2026-06-20 · Read on arXiv

Shuo-Yu Liu, Yu-Wei Yu, Ji-Shun Lian, Xin-Ke Hu, Alexis Coleiro, Zhu-Heng Yao, Li-Ping Xin, Jing Wang, Hua-Li Li, Zi-Qi Wang, Jin Zhang, Floriane Cangemi, Bertrand Cordier, Antoine Foisseau, Olivier Godet, Andrea Goldwurm, Diego Gotz, Sebastien Guillot, Xu-Hui Han, Ning Jiang, Cyril Lachaud, Sebastien Le Stum, En-Wei Liang, Pierre Maggi, Yu-Lei Qiu, Jerome Rodriguez, Lian Tao, Jian-Yan Wei, Chao Wu, Liang Zhang, Shuang-Nan Zhang, Shi-Jie Zheng

astro-ph.HE

Submitted: 2026-06-20

Comments: 23 pages, 8 figures, accepted for publication in ApJL

DOI: 10.3847/2041-8213/ae800e

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Aperture — 9× in this paper · explained in 1 episode
• Inverse Compton (IC) scattering — 3× in this paper · explained in 2 episodes
• Calibration — 2× in this paper · explained in 7 episodes
• AGN — 1× in this paper · explained in 1 episode
• Aperture Correction — 1× in this paper · explained in 1 episode
• Aperture Photometry — 1× in this paper · explained in 1 episode
• Visible Telescope — 1× in this paper

Sources

• Fermi Large Area Telescope Fourth Source Catalog Data Release 4 (4FGL-DR4)
• Zooming in on the GeV $\gamma$-ray flare of the blazar PKS 1725+123 with a multimessenger lens
• Early results from the SVOM Observatory Science program
• The SVOM mission, its profile and its system
• ECLAIRs: the SVOM high-energy transient trigger camera
• The SVOM / ECLAIRs Scientific Analysis Pipeline
• SVOM Science User Support Services at Chinese Science Center
• Particle acceleration and synchrotron emission in blazar jets
• SVOM/VT: Overview of data processing and GRB identifications with X-band data
• The data analysis pipeline for the Microchannel X-ray Telescope on board the SVOM mission
• SVOM/VT: Instrument Overview, Science Objectives, and First-Year Performance
• The Deep and Transient Universe in the SVOM Era: New Challenges and Opportunities - Scientific prospects of the SVOM mission
• SVOM/VT: Preliminary Calibration Analysis

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