Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Cold Spot as a Large Void: Rees-Sciama effect on CMB Power Spectrum
  and Bispectrum   The detection of a "Cold Spot" in the CMB sky could be explained by the
presence of an anomalously large spherical underdense region (with radius of a
few hundreds Mpc/h) located between us and the Last Scattering Surface.
Modeling such an underdensity with an LTB metric, we investigate whether it
could produce significant signals on the CMB power spectrum and bispectrum, via
the Rees-Sciama effect. We find that this leads to a bump on the power
spectrum, that corresponds to an O(5%-25%) correction at multipoles 5 < l < 50;
in the cosmological fits, this would modify the \chi^2 by an amount of order
unity. We also find that the signal should be visible in the bispectrum
coefficients with a signal-to-noise S/N ~ O (1-10), localized at 10 < l < 40.
Such a signal would lead to an overestimation of the primordial f_{NL} by an
amount \Delta f_{NL} ~ 1 for WMAP and by \Delta f_{NL} ~ 0.1 for Planck.

23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
2
The categories of this paper are: math
7
The categories of this paper are: hep-th
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin