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Funding for this research was provided by:
National Aeronautics and Space Administration (NNX08AW56G)
National Aeronautics and Space Administration (NNX09AU10G)
National Aeronautics and Space Administration (NNX12AO93G)
National Aeronautics and Space Administration (NNX15AU81G)
National Aeronautics and Space Administration (NNM15AA18C)
Agenzia Spaziale Italiana (ASI-OHBI-2022-13-I.0)
Agenzia Spaziale Italiana (ASI-INAF-2022-19-HH.0)
Agenzia Spaziale Italiana (ASI-INFN-2017.13-H0)
Agenzia Spaziale Italiana (ASI-INAF-2022-14-HH.0 and ASI-INFN 2021-43-HH.0)
Bulgarian National Science Fund (KP-06-H38/4 (2019) and KP-06-PN-68/1(2022))
UKRI ∣ STFC ∣ Central Laser Facility, Science and Technology Facilities Council (ST/T00147X/1)
EC ∣ ERC ∣ HORIZON EUROPE European Research Council (101040021)
Ministerio de Ciencia e Innovación (CEX2021-001131-S)
Istituto Nazionale di Astrofisica (U.1.01.01.01.009)
National Science Foundation (AST-2108622)
Research Council of Finland (317636)
National Research Foundation of Korea (2020R1A2C2009003)
Article Title: High Optical-to-X-Ray Polarization Ratio Reveals Compton Scattering in BL Lacertae’s Jet
Journal Title: The Astrophysical Journal Letters
Article Type: paper
Copyright Information: © 2025. The Author(s). Published by the American Astronomical Society.
Publication dates
Date Received: 2025-02-18
Date Accepted: 2025-03-24
Online publication date: 2025-05-16