The Near-IR Background Intensity and Anisotropies During The Epoch of
  Reionization
  A fraction of the extragalactic near-infrared (near-IR) background light
involves redshifted photons from the ultraviolet (UV) emission from galaxies
present during reionization at redshifts above 6. The absolute intensity and
the anisotropies of the near-IR background provide an observational probe of
the first-light galaxies and their spatial distribution. We estimate the
extragalactic background light intensity during reionization by accounting for
the stellar and nebular emission from first-light galaxies. We require the UV
photon density from these galaxies to generate a reionization history that is
consistent with the optical depth to electron scattering from cosmic microwave
background measurements. We also require the bright-end luminosity function of
galaxies in our models to reproduce the measured Lyman drop-out luminosity
functions at redshifts of 6 to 8. The absolute intensity is about 0.1 to 0.3 nW
m$^{-2}$ sr$^{-1}$ at the peak of its spectrum at $\sim$ 1.1 $\mu$m. We also
discuss the anisotropy power spectrum of the near-IR background using a halo
model to describe the galaxy distribution. We compare our predictions for the
anisotropy power spectrum to existing measurements from deep near-IR imaging
data from {\it Spitzer}/IRAC, {\it Hubble}/NICMOS, and {\it AKARI}. The
predicted rms fluctuations at tens of arcminute angular scales are roughly an
order of magnitude smaller than the existing measurements. While strong
arguments have been made that the measured fluctuations do not have an origin
involving faint low-redshift galaxies, we find that the existing measurements
are also incompatible with an origin during the era of reionization. The
measured near-IR background anisotropies remain unexplained and could be
associated with an unidentified non-astrophysical origin.
