Searching for Anisotropic Cosmic Birefringence with Polarization Data from SPTpol

• Published in: Physical Review D
• Main Authors: Bianchini, F., Wu, W.L.K., Ade, P.A.R., Anderson, A.J., Austermann, J.E., Avva, J.S., Balkenhol, L., Baxter, E., Beall, J.A., Bender, A.N., Benson, B.A., Bleem, L.E., Carlstrom, J.E., Chang, C.L., Chaubal, P., Chiang, H.C., Chou, T.L., Citron, R., Corbett Moran, C., Crawford, T.M., Crites, A.T., de Haan, T., Dobbs, M.A., Everett, W., Gallicchio, J., George, E.M., Gilbert, A., Gupta, N., Halverson, N.W., Henning, J.W., Hilton, G.C., Holder, G.P., Holzapfel, W.L., Hrubes, J.D., Huang, N., Hubmayr, J., Irwin, K.D., Knox, L., Lee, A.T., Li, D., Lowitz, A., Manzotti, A., Mcmahon, J.J., Meyer, S.S., Millea, M., Mocanu, L.M., Montgomery, J., Nadolski, A., Natoli, T., Nibarger, J.P.
• Other Authors: Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), SPT
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2020
• Subjects: Cosmology; cosmic background radiation: temperature; polarization: rotation; power spectrum: angular dependence; magnetic field: primordial; correlation: higher-order; temperature: fluctuation; birefringence; anisotropy; coupling constant; Chern-Simons term; inflation; [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]; Hubble; South Pole; South pole
• Online Access: https://hal.science/hal-02886903; https://doi.org/10.1103/PhysRevD.102.083504

International audience We present a search for anisotropic cosmic birefringence in 500 deg2 of southern sky observed at 150 GHz with the SPTpol camera on the South Pole Telescope. We reconstruct a map of cosmic polarization rotation anisotropies using higher-order correlations between the observed c...