the data · wmap9-ilc

WMAP 9-year ILC map, KQ75 mask, and TT spectrum

Name: WMAP 9-year ILC map, KQ75 mask, and TT spectrum
Creator: NASA LAMBDA

cmb NASA LAMBDA 4 files · 48.1 MB

WMAP 9-year Internal Linear Combination temperature map with the KQ75 analysis mask and the 9-year combined TT power spectrum (v5.0). The primary instrument-independent witness for the large-angle anomalies: low quadrupole, cut-sky S_1/2 at ~3 sigma, and the quadrupole-octopole alignment.

Files — sizes and hashes computed from disk, not quoted

file	size	sha-256
wmap_ilc_9yr.fits	24.0 MB	4501090f824f9140…	download
wmap_kq75_mask.fits	24.0 MB	888e7e22f0f242ce…	download
wmap_tt_spectrum.txt	86.6 KB	935e9cfa936b0161…	download
fetch_data.sh	839 B	c6060c912aac88d9…	download

verify: shasum -a 256 <file> — must match the hash above or discard the file.

Used by claims

USR-2026-0012 The WMAP large-angle sky is anomalous: quadrupole 243 µK² (p = 0.052), cut-sky S_1/2... PROVISIONAL

USR-2026-0013 Planck SMICA independently confirms the large-angle missing power seen in WMAP (C₂ = 200... PROVISIONAL

USR-2026-0014 The large-angle missing power survives all four map cleanings (D₂ = 243/200/184/198 µK²;... PROVISIONAL

USR-2026-0016 Both Planck and WMAP weakly prefer a low-ℓ power cutoff (Planck Δχ² = 3.72 ≈ 1.4σ at ℓ_c =... PROVISIONAL

USR-2026-0017 After look-elsewhere correction the joint large-angle boundary anomaly is 0.8–1.6σ. The 1.6σ... PROVISIONAL

USR-2026-0025 The asymmetry axis is not a foreground: raw single-frequency asymmetries (0.212/0.161/0.476)... PROVISIONAL

Provenance

upstream source ↗

citation: arXiv:1212.5225
license / terms: US government data, public domain. Exact deep links preserved in fetch_data.sh: dfp/ilc/wmap_ilc_9yr_v5.fits and ancillary/masks/wmap_temperature_kq75_analysis_mask_r9_9yr_v5.fits.
local directory: /Users/davidthompson/TWO SLITS/boundary_seam/data
notes: fetch_data.sh (catalogued here) re-downloads the two FITS files from LAMBDA and the Planck SMICA map + common mask from the PLA. Citation grounded in the spectrum header ('Bennett, et al. (2012)' = arXiv:1212.5225).

Serving, honestly

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