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This is a Quantitative Study study.

September 23, 2025Open Access

Planck constraints on the scale dependence of isotropic cosmic birefringence

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Authors

CBC. BuriganaCentre National de la Recherche Scientifique AGA. GruppusoUniversité Paris-Sud SPS. ParadisoNational Technical University of Athens

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Implication

Analysis shows no significant scale dependence for cosmic birefringence in CMB data, suggesting stable angles. Upcoming observations may enhance current precision significantly.

Key Points

The analysis confirms isotropic cosmic birefringence angle at $β=0.30 ± 0.05$ degrees, indicating potential new physics.
Results from two approaches consistently point to a non-zero birefringence angle, providing evidence for parity violation.
Current examinations show no significant dependence on harmonic scale, with results robust across multiple analyses.
Future CMB observations are expected to improve precision of birefringence measurements by a factor of about 7.

Cite This Study

Burigana et al. (2025) studied this question.

synapsesocial.com/papers/68d475a031b076d99fa6dbb3 https://doi.org/10.48550/arxiv.2507.16714

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Implication

Analysis shows no significant scale dependence for cosmic birefringence in CMB data, suggesting stable angles. Upcoming observations may enhance current precision significantly.

Planck constraints on the scale dependence of isotropic cosmic birefringence

Discussion

Member takes

Implication

Key Points

Cite This Study

Planck constraints on the scale dependence of isotropic cosmic birefringence

Discussion

Member takes

Implication

Key Points

Cite This Study

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