A Challenge to the Standard Cosmological Model

We present the first joint analysis of catalogs radio galaxies and quasars to determine if their sky distribution is consistent with standard $\Lambda$CDM model cosmology. This based on cosmological principle, which asserts that universe statistically isotropic homogeneous large scales, so observed dipole anisotropy in cosmic microwave background (CMB) must be attributed our local peculiar motion. test null hypothesis there a motion inferred from CMB, as expected for cosmologically distant sources. Our two samples, constructed respectively NRAO VLA Sky Survey Wide-field Infrared Explorer, are systematically independent have no shared objects. Using completely general statistic accounts correlation between found amplitude its directional offset CMB dipole, independently rejected by galaxy quasar samples $p$-value $8.9\times10^{-3}$ $1.2\times10^{-5}$, respectively, corresponding $2.6\sigma$ $4.4\sigma$ significance. The significance, using sample size-weighted $Z$-scores, $5.1\sigma$. show dipoles each other find evidence any frequency dependence amplitude. consistency improves we boost frame assuming fully kinematic, suggesting may an intrinsic this frame.