Pith Number

pith:7Z7IUIMN

pith:2022:7Z7IUIMNRWOT4QX677PTYR3ONI

not attested not anchored not stored refs resolved

CMB power spectra and cosmological parameters from Planck PR4 with CamSpec

Erik Rosenberg, George Efstathiou, Steven Gratton

Planck NPIPE maps confirm 2018 cosmology with roughly 10 percent tighter constraints on parameters.

arxiv:2205.10869 v2 · 2022-05-22 · astro-ph.CO

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

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The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

We find excellent consistency between NPIPE and the Planck 2018 maps at the parameter level, showing that the Planck cosmology is robust to substantial changes in the mapmaking. The lower noise of NPIPE leads to ~10% tighter constraints, and we see both smaller error bars and a shift toward the LCDM values for beyond-LCDM parameters including Omega_K and A_Lens.

C2weakest assumption

That the NPIPE mapmaking pipeline and the CamSpec likelihood together capture the true cosmological signal without introducing new unmodeled systematics that could bias the parameter shifts or error-bar reductions.

C3one line summary

Planck PR4 NPIPE maps processed with CamSpec produce LCDM parameters consistent with 2018 results but with ~10% tighter constraints and shifts toward LCDM values for extensions like Omega_K and A_Lens.

References

300 extracted · 300 resolved · 14 Pith anchors

[1] Efficient Computation of CMB anisotropies in closed FRW models 2000 · doi:10.1086/309179

[2] CMB power spectrum parameter degeneracies in the era of precision cosmology 2012 · doi:10.1088/1475-7516/2012/04/027

[3] Planck 2018 results. V. CMB power spectra and likelihoods 2018 · doi:10.1051/0004-6361/201936386

[4] arXiv e-prints , keywords =

[5] Cosmological parameters from CMB and other data: a Monte-Carlo approach 2002 · doi:10.1103/physrevd.66.103511

Formal links

1 machine-checked theorem link

Cited by

24 papers in Pith

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New Insights into Dark Energy from DESI DR2 with CMB and SNIa

Resolving the Planck-DESI tension by nonminimally coupled quintessence

Receipt and verification

First computed	2026-05-17T23:38:46.980399Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fe7e8a218d8d9d3e42feffdf3c476e6a28188104856905bada61f1dbdcb6684b

Aliases

arxiv: 2205.10869 · arxiv_version: 2205.10869v2 · doi: 10.48550/arxiv.2205.10869 · pith_short_12: 7Z7IUIMNRWOT · pith_short_16: 7Z7IUIMNRWOT4QX6 · pith_short_8: 7Z7IUIMN

Agent API

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/7Z7IUIMNRWOT4QX677PTYR3ONI \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: fe7e8a218d8d9d3e42feffdf3c476e6a28188104856905bada61f1dbdcb6684b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "44c534d859bbfc13b32a29ae5d5b5e244c7bd1f3b918fe8f7e05c68c1f59d434",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2022-05-22T17:02:55Z",
    "title_canon_sha256": "64d7efab20c085938bbd979dd5f50184f87f6f3ed36bc43fbf4305d38568e439"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2205.10869",
    "kind": "arxiv",
    "version": 2
  }
}