Pith Number

pith:UTGEVXMZ

pith:2026:UTGEVXMZBDDEFETFKWD3PNQMZP

not attested not anchored not stored refs resolved

Weighing gas-rich starless halos: dark matter parameters inference from their gas distributions

Alejandro Benitez-Llambay (1) ((1) University of Milano-Bicocca), Francesco Turini (1)

Virial masses of starless dark matter halos are reliably recovered from their neutral hydrogen gas distributions

arxiv:2603.05597 v2 · 2026-03-05 · astro-ph.GA · astro-ph.CO

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\usepackage{pith}
\pithnumber{UTGEVXMZBDDEFETFKWD3PNQMZP}

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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

✓ Portable graph bundle live · download bundle · merged state

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

the virial mass is exceptionally well constrained, establishing a highly reliable framework for weighing starless halos in upcoming surveys

C2weakest assumption

The gas resides in near hydrostatic equilibrium within the dark matter potential and in thermal equilibrium with the cosmic ultraviolet background. This simplicity allows analytic frameworks to link observable HI column densities directly to fundamental dark matter halo structural parameters.

C3one line summary

Virial masses of RELHICs are robustly recovered from their HI gas profiles via Bayesian nested sampling, with environmental density as a free parameter eliminating systematic mass biases from mass-concentration degeneracies.

References

53 extracted · 53 resolved · 1 Pith anchors

[1] S., Ben´ ıtez-Llambay, A., Beaton, R., et al 2025

[2] E., Springel, V ., White, S 2012

[3] Benitez-Llambay, A. 2015, py-sphviewer: Py-SPHViewer v1.0.0 Benítez-Llambay, A., Dutta, R., Fumagalli, M., & Navarro, J. F. 2024, ApJ, 973, 61 2015

[4] Benitez-Llambay, A. & Frenk, C. 2020, MNRAS, 498, 4887 Benítez-Llambay, A., Frenk, C. S., Ludlow, A. D., & Navarro, J. F. 2019, MN- RAS, 488, 2387 2020

[5] Benitez-Llambay, A. & Fumagalli, M. 2021, ApJ, 921, L9 2021

Cited by

1 paper in Pith

Beyond Cloud-9: The case for discovering more HI-rich failed halos

Receipt and verification

First computed	2026-05-17T23:39:15.862354Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a4cc4add9908c64292655587b7b60ccbd218584af5c3920fad4ae5159c3c62c2

Aliases

arxiv: 2603.05597 · arxiv_version: 2603.05597v2 · doi: 10.48550/arxiv.2603.05597 · pith_short_12: UTGEVXMZBDDE · pith_short_16: UTGEVXMZBDDEFETF · pith_short_8: UTGEVXMZ

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/UTGEVXMZBDDEFETFKWD3PNQMZP \
  | 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: a4cc4add9908c64292655587b7b60ccbd218584af5c3920fad4ae5159c3c62c2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f5cd7c1c059f93607eb565f456871e9839ffe0fa6821f83c7ed8a009db49a485",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-03-05T19:00:12Z",
    "title_canon_sha256": "e107e28306abe123c066f73c550f89ddc164f2e8c02aa14cf01a0d0caab5f321"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2603.05597",
    "kind": "arxiv",
    "version": 2
  }
}