NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-25 T15:08:38 PDT
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For refcode 2014MNRAS.445.2440Y:
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NED Abstract

Copyright by Royal Astronomical Society. 2014MNRAS.445.2440Y Possible signature of distant foreground in the Planck data Yershov, V. N.; Orlov, V. V.; Raikov, A. A. Abstract. By using the Planck map of the cosmic microwave background (CMB) radiation, we have checked and confirmed the existence of a correlation between supernova (SN) redshifts, z_SN_, and CMB temperature fluctuations at the SNe locations, T_SN_, which we previously reported for the Wilkinson Microwave Anisotropy Probe data. The Pearson correlation coefficient for the Planck data is r = +0.38 +/- 0.08, which indicates that the correlation is statistically significant (the signal is about 5sigma above the noise level). The correlation becomes even stronger for the Type Ia subsample of SNe, r_Ia_ = +0.45 +/- 0.09, whereas for the rest of the SNe it is vanishing. By checking the slopes of the regression lines T_SN_/z_SN_ for Planck's different frequency bands, we have also excluded the possibility of this anomaly being caused by the Sunyaev-Zeldovich effect. The remaining possibility is some, unaccounted for, contribution to the CMB from distant (z > 0.3) foreground through either the integrated Sachs-Wolfe effect or thermal emission from intergalactic matter. Key words: methods: statistical, supernovae: general, galaxies: star formation, cosmic background radiation
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