Pith Number

pith:NNLMEY7A

pith:2022:NNLMEY7AJMX3R5WKJJIIO3PGFO

not attested not anchored not stored refs resolved

CMB lensing from Planck PR4 maps

Antony Lewis, Julien Carron, Mark Mirmelstein

Reconstructing CMB lensing from Planck PR4 maps with optimal filtering increases signal-to-noise by nearly 20 percent and delivers the tightest lensing power spectrum measurement to date.

arxiv:2206.07773 v2 · 2022-06-15 · astro-ph.CO

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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 increase the reconstruction signal to noise by almost 20%, constraining the amplitude of the CMB-marginalized lensing power spectrum in units of the Planck 2018 best-fit to 1.004 ± 0.024 (68% limits), which is the tightest constraint on the CMB lensing power spectrum to date.

C2weakest assumption

That residual systematics and foregrounds in the PR4 maps are sufficiently controlled by the more optimal filtering so that the reported 20% S/N gain and amplitude constraint are not biased.

C3one line summary

Planck PR4 maps with optimal filtering yield CMB lensing amplitude 1.004 ± 0.024 and σ8 Ωm^0.25 = 0.599 ± 0.016, the tightest lensing constraint yet.

References

50 extracted · 50 resolved · 35 Pith anchors

[1] Aghanimet al.(Planck), Planck 2018 results 2018

[2] The Atacama Cosmology Telescope: Two-Season ACTPol Lensing Power Spectrum 2016 · arXiv:1611.09753

[3] Bianchini et al 2020

[4] W. L. K. Wu et al., A Measurement of the Cosmic Microwave Background Lensing Potential and Power Spectrum from 500 deg2 of SPTpol Temperature and Polarization Data, Astrophys. J. 884, 70 (2019), arXiv 2019

[5] Darwish et al., The Atacama Cosmology Telescope: A CMB lensing mass map over 2100 square degrees of sky and its cross- correlation with BOSS-CMASS galaxies, Mon 2020

Formal links

2 machine-checked theorem links

Cited by

29 papers in Pith

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The Atacama Cosmology Telescope: A Measurement of the DR6 CMB Lensing Power Spectrum and its Implications for Structure Growth

Probing Dynamical Dark Energy with Late-Time Data: Evidence, Tensions, and the Limits of the $w_0w_a$CDM Framework

Negative neutrino mass or negative dark energy?

Faster CMB lensing with control variates

Receipt and verification

First computed	2026-05-17T23:38:47.012334Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b56c263e04b2fb8f6ca4a50876de62b9068a29336fd6ddf6624d7df9c3a0b51

Aliases

arxiv: 2206.07773 · arxiv_version: 2206.07773v2 · doi: 10.48550/arxiv.2206.07773 · pith_short_12: NNLMEY7AJMX3 · pith_short_16: NNLMEY7AJMX3R5WK · pith_short_8: NNLMEY7A

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/NNLMEY7AJMX3R5WKJJIIO3PGFO \
  | 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: 6b56c263e04b2fb8f6ca4a50876de62b9068a29336fd6ddf6624d7df9c3a0b51

Canonical record JSON

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    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2022-06-15T19:17:41Z",
    "title_canon_sha256": "5857b43d67947a07b9f0b0b499737688b525e7d604012f4a56707e80c5a7328a"
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