the data · planck-2018-component-maps

Planck 2018 component-separated CMB maps + common mask

Name: Planck 2018 component-separated CMB maps + common mask
Creator: ESA Planck Legacy Archive

cmb ESA Planck Legacy Archive 4 files · 5.06 GB

Full-resolution (nside 2048) Planck 2018 (PR3) foreground-cleaned temperature maps — SMICA, COMMANDER, NILC — plus the common analysis mask. SMICA is the workhorse of the boundary/tilt seams (anomalies, ISW, asymmetry, corner-universe tests); COMMANDER and NILC provide the cleaning-robustness battery.

Files — sizes and hashes computed from disk, not quoted

file	size	sha-256
planck_smica.fits	1.88 GB	60952c645eb33d15…	download
planck_mask.fits	192.0 MB	23f49a3479073408…	download
planck_nilc.fits	1.5 GB	8f9a8533bc40b46b…	download
planck_commander.fits	1.5 GB	fe0332e61087ab44…	download

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

Used by claims

USR-2026-0010 A matched-filter cross-correlation of Planck SMICA with 756k Quaia quasars gives a positive... 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-2026-0019 A corner (reflecting-corner) observer reproduces both halves of the anomaly — ⟨parity⟩ →... PROVISIONAL

USR-2026-0020 The hemispherical power asymmetry peaks at 2.0σ (p = 0.0250) at LMAX = 64 toward (l,b) =... PROVISIONAL

USR-2026-0021 No bubble-collision signature in the CMB: global p = 0.903 (0.0σ); the best local candidate... PROVISIONAL

USR-2026-0022 A single super-horizon wave cannot cause the tilt: matching the dipole-free asymmetry... KILLED

USR-2026-0024 The CMB low-ℓ variance dipole is significant in this pipeline: A = 0.102 toward (l,b) =... PROVISIONAL

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

USR-2026-0026 The power asymmetry's excess over ΛCDM is confined to ℓ ≲ 40. The raw amplitude falls from A... PROVISIONAL

Provenance

upstream source ↗

citation: arXiv:1807.06208
license / terms: ESA public archive. Deep links preserved in fetch_data.sh for SMICA and the mask: pla/aio/product-action?MAP.MAP_ID=COM_CMB_IQU-smica_2048_R3.00_full.fits and =COM_Mask_CMB-common-Mask-Int_2048_R3.00.fits. No on-disk fetch line for NILC/COMMANDER (retrieved from the same archive).
local directory: /Users/davidthompson/TWO SLITS/boundary_seam/data
notes: All four files exceed 50 MB (SMICA is ~2 GB) — not served for download; re-fetch from the PLA instead. The directory's .gitignore excludes *.fits: these maps exist only locally.

Serving, honestly

Downloads are served directly from this server today; an object-storage mirror (Tigris) is planned and flips on via config. The upstream archive is always the canonical copy — cite it, not us. Anything we serve must match its published hash.