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arXiv · 1907.06514

Searches for Lorentz-Violating Signals with Astrophysical Polarization Measurements

Fabian Kislat
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Abstract

Astrophysical observations are a powerful tool to constrain effects of Lorentz-invariance violation in the photon sector. Objects at high redshifts provide the longest possible baselines, and gamma-ray telescopes allow us to observe some of the highest energy photons. Observations include polarization measurements and time-of-flight measurements of transient or variable objects to constrain vacuum birefringence and dispersion. Observing multiple sources covering the entire sky allows the extraction of constraints on anisotropy. In this paper, I review methods and recent results on Lorentz- and CPT-invariance violation constraints derived from astrophysical polarization measurements in the framework of the Standard-Model Extension.

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Fabian Kislat. 2019-07-15. Searches for Lorentz-Violating Signals with Astrophysical Polarization Measurements. https://arxiv.org/abs/1907.06514

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