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Article

Constraints on Lorentz Invariance Violation with Multiwavelength Polarized Astrophysical Sources

by 1, 1,*, 2,3,* and 2,3,*
1
School of Physics and Physical Engineering, Qufu Normal University, Qufu 273165, China
2
Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210023, China
3
School of Astronomy and Space Sciences, University of Science and Technology of China, Hefei 230026, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Marco Schreck
Galaxies 2021, 9(2), 44; https://doi.org/10.3390/galaxies9020044
Received: 14 April 2021 / Revised: 15 June 2021 / Accepted: 16 June 2021 / Published: 20 June 2021
(This article belongs to the Special Issue Lorentz Violation in Astroparticles and Gravitational Waves)
Possible violations of Lorentz invariance (LIV) can produce vacuum birefringence, which results in a frequency-dependent rotation of the polarization plane of linearly polarized light from distant sources. In this paper, we try to search for a frequency-dependent change of the linear polarization angle arising from vacuum birefringence in the spectropolarimetric data of astrophysical sources. We collect five blazars with multiwavelength polarization measurements in different optical bands (UBVRI). Taking into account the observed polarization angle contributions from both the intrinsic polarization angle and the rotation angle induced by LIV, and assuming that the intrinsic polarization angle is an unknown constant, we obtain new constraints on LIV by directly fitting the multiwavelength polarimetric data of the five blazars. Here, we show that the birefringence parameter η quantifying the broken degree of Lorentz invariance is limited to be in the range of 9.63×108<η<6.55×106 at the 2σ confidence level, which is as good as or represents one order of magnitude improvement over the results previously obtained from ultraviolet/optical polarization observations. Much stronger limits can be obtained by future multiwavelength observations in the gamma-ray energy band. View Full-Text
Keywords: astroparticle physics; gravitation; polarization; multiwavelength astroparticle physics; gravitation; polarization; multiwavelength
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MDPI and ACS Style

Zhou, Q.-Q.; Yi, S.-X.; Wei, J.-J.; Wu, X.-F. Constraints on Lorentz Invariance Violation with Multiwavelength Polarized Astrophysical Sources. Galaxies 2021, 9, 44. https://doi.org/10.3390/galaxies9020044

AMA Style

Zhou Q-Q, Yi S-X, Wei J-J, Wu X-F. Constraints on Lorentz Invariance Violation with Multiwavelength Polarized Astrophysical Sources. Galaxies. 2021; 9(2):44. https://doi.org/10.3390/galaxies9020044

Chicago/Turabian Style

Zhou, Qi-Qi, Shuang-Xi Yi, Jun-Jie Wei, and Xue-Feng Wu. 2021. "Constraints on Lorentz Invariance Violation with Multiwavelength Polarized Astrophysical Sources" Galaxies 9, no. 2: 44. https://doi.org/10.3390/galaxies9020044

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