Pith Number

pith:MTCKOAQC

pith:2026:MTCKOAQCEDTA6USKRIW4NHQSWV

not attested not anchored not stored refs resolved

When galaxies burst: enhanced shot-noise for line-intensity mapping in the JWST era

Eleonora Vanzan, Ely D. Kovetz, Hovav Lazare, Julian B. Mu\~noz, Sarah Libanore

JWST-observed bursty star formation multiplies LIM shot-noise power by a line-dependent factor of up to 7.

arxiv:2605.13967 v1 · 2026-05-13 · astro-ph.GA · astro-ph.CO

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Claims

C1strongest claim

We propagate the JWST-era burstiness through to the LIM shot-noise power spectrum and show that the result is a simple multiplicative correction: the deterministic shot noise multiplied by a line-dependent boost factor B_λ derived in closed form by convolving the SFR correlation function with the stellar-population-synthesis kernel of each line.

C2weakest assumption

The JWST-measured rms log-SFR scatter of ~0.6 dex and its ~25 Myr time correlation at z~4-6 for M_h~10^11 M_sun can be directly inserted into the SFR correlation function and convolved with SPS kernels to obtain the boost factor at z~6 without additional astrophysical corrections or selection effects.

C3one line summary

Bursty high-redshift star formation boosts LIM shot-noise by line-dependent factors B_λ of 2.5-7 at z~6 via convolution of SFR correlations with SPS kernels, improving auto-spectrum detectability while degrading clustering measurements.

References

63 extracted · 63 resolved · 4 Pith anchors

[1] The brightest galaxies at cosmic dawn 2023

[2] A Comprehensive Study of Galaxies at z∼9−16 Found in the Early JWST Data: Ultraviolet Lu- minosity Functions and Cosmic Star Formation History at the Pre-reionization Epoch 2023

[3] The Complete CEERS Early Uni- verse Galaxy Sample 2024

[4] JWST PRIMER: a new multifield determination of the evolving galaxy UV luminosity func- tion at redshiftsz≃9−15 2024

[5] Earliest Galaxies in the JADES Origins Field: Luminosity Function and Cosmic Star For- mation Rate Density 300 Myr after the Big Bang 2024

Receipt and verification

First computed	2026-05-17T23:39:13.539028Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

64c4a7020220e60f524a8a2dc69e12b55279cc0705f67c0694d2b8f2fac9c06c

Aliases

arxiv: 2605.13967 · arxiv_version: 2605.13967v1 · doi: 10.48550/arxiv.2605.13967

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/MTCKOAQCEDTA6USKRIW4NHQSWV \
  | 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: 64c4a7020220e60f524a8a2dc69e12b55279cc0705f67c0694d2b8f2fac9c06c

Canonical record JSON

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  "metadata": {
    "abstract_canon_sha256": "b985a8344906ef798643850d863155249ac3feb8d95edd8d506384f8791c12e1",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-05-13T18:00:04Z",
    "title_canon_sha256": "f59225c10153218ebc7e34f8b6cacb9821080b28df31b0b0c0cacef88362fe68"
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  "source": {
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    "kind": "arxiv",
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