Pith Number

pith:53ZZCU56

pith:2026:53ZZCU56NINCMJWZWGA3WP2KRH

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Determination of the best dark matter profile for the Milky Way with Gaia DR3 using Bayesian Model Comparison

Aryan Singh, Shantanu Desai

Bayesian comparison of Gaia rotation curves favors the Einasto dark matter profile over NFW.

arxiv:2605.16994 v1 · 2026-05-16 · astro-ph.GA · astro-ph.CO

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\pithnumber{53ZZCU56NINCMJWZWGA3WP2KRH}

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Record completeness

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4 Citations open

5 Replications open

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Claims

C1strongest claim

Within the adopted modeling framework and Gaia-based rotation curve datasets, we find that the Einasto profile provides the preferred phenomenological fit compared to the NFW profile across most combinations of datasets and baryonic models. We also find that the cored dark profiles are preferred over the (cuspy) NFW profile.

C2weakest assumption

The compiled rotation curve velocities accurately trace the circular velocity field without substantial contamination from non-circular motions, streaming, or distance errors, and that the chosen baryonic models correctly capture the visible matter contribution without large systematic offsets.

C3one line summary

Bayesian comparison of Gaia DR3 rotation curves favors the Einasto dark matter profile over NFW, prefers cored over cuspy profiles, and finds MOND variants provide poorer fits than the best dark matter models.

References

89 extracted · 89 resolved · 24 Pith anchors

[1] The distribution and kinematics of neutral hydrogen in spiral galaxies of various morphological types

[2] Summary of the content and survey properties · doi:10.1051/0004-6361/202243940

[3] Generalized Rotation Curves of the Milky Way from the GAIA DR3 Data Set: Constraints on Mass Models. , keywords =. doi:10.3847/1538-4357/ad88f1 , archivePrefix =. 2410.14307 , primaryClass = · doi:10.3847/1538-4357/ad88f1

[4] Rotation of the Andromeda Nebula from a Spectroscopic Survey of Emission Regions 1970 · doi:10.1086/150317

[5] Modiﬁed Newtonian Dynamics ( MOND): Observational Phenomenology and Relativistic Extensions 2012 · doi:10.12942/lrr-2012-10

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-20T00:03:34.995726Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eef39153be6a1a2626d9b181bb3f4a89cb4464316283bebb9368a193c45b12c7

Aliases

arxiv: 2605.16994 · arxiv_version: 2605.16994v1 · doi: 10.48550/arxiv.2605.16994 · pith_short_12: 53ZZCU56NINC · pith_short_16: 53ZZCU56NINCMJWZ · pith_short_8: 53ZZCU56

Agent API

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/53ZZCU56NINCMJWZWGA3WP2KRH \
  | 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: eef39153be6a1a2626d9b181bb3f4a89cb4464316283bebb9368a193c45b12c7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "40469391de06ba3da8bf16816d4fd2f5d429925942f8c0e506eb9fc2ffb92cbe",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-05-16T13:42:08Z",
    "title_canon_sha256": "4879737ea68b00e9e24221f830c11acff56c0c9e6d37e55cbc15bfe4a7de57ba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.16994",
    "kind": "arxiv",
    "version": 1
  }
}