A mechanism to explain Galaxy alignment over a range of scales
  The observed large-scale alignment of polarization angles and galaxy axis
have been challenging the fundamental assumption of homogeneity and isotropy in
standard cosmology since more than two decades. The intergalactic magnetic
field, and its correlations in real space, potentially seems as a viable
candidate for explaining this phenomenon. It has been shown earlier that the
large-scale intergalactic magnetic field correlations can explain the alignment
signal of quasars over Gpc scale, interestingly they can also explain the radio
polarization alignment observed in JVAS/CLASS data over 100 Mpc. Motivated with
recent observations of galaxy axis alignment over several tens of Mpc, and Mpc
scale, i.e., the cluster scale, we further explore the correlations of
background magnetic field to explain these relatively small scale alignment
observations. In particular, we explore two recently claimed signals of
alignment in the radio sources in the FIRST catalog and in the ACO clusters. We
find that the FIRST alignment signal is well explained in terms of the
intergalactic magnetic field with a spectral index of $-2.62\pm 0.03$.
Furthermore, the model also partially explains the very small scale alignment
(alignment within clusters). Though the elementary model proposed in this work
seems to have its limitations at very small scales, the large-scale magnetic
field correlations potentially seem to explain the polarization and galaxy axis
alignment from Gpc to Mpc scales.
