Pith Number

pith:N6WFDBSJ

pith:2026:N6WFDBSJJGG77V5YQKIWOCBRDL

not attested not anchored not stored refs resolved

Ionization Structure and Metal Enrichment of the Galactic Center Minispiral Observed with JWST

Daryl Haggard, Giacomo Principe, Howard A. Smith, Joey Neilsen, Joseph L. Hora, Joseph M. Michail, Mayura Balakrishnan, Nadeen B Sabha, Nicole M Ford, Sebastiano D. von Fellenberg, S. P. Willner, Tamojeet Roychowdhury, Yuzhu Cui, Zach Sumners

JWST data show the Galactic Center Minispiral gas has 1-2.5 solar metallicity, ionized mainly by Wolf-Rayet stars with extra hard radiation in compact structures.

arxiv:2605.13995 v1 · 2026-05-13 · astro-ph.GA

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\usepackage{pith}
\pithnumber{N6WFDBSJJGG77V5YQKIWOCBRDL}

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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 Minispiral gas metallicity is ∼1-2.5 Z⊙, with a Wolf-Rayet star-driven ionizing radiation field, and significant nickel and iron dust destruction. Increased flux at energies ≳41 eV suggests that the compact gas structures experience an additional harder ionizing radiation source, which is most likely driven by localized fast radiative shocks from stellar winds, a hypothetical Sgr A* outflow, and/or interactions with the ambient medium.

C2weakest assumption

The analysis assumes that standard photoionization models and line ratio diagnostics accurately separate the contributions from Wolf-Rayet stars, shocks, and possible Sgr A* outflows without significant unaccounted-for effects from dust geometry or additional radiation sources.

C3one line summary

JWST MIRI MRS observations show the Galactic Center Minispiral gas has 1-2.5 solar metallicity, Wolf-Rayet driven ionization, significant Ni and Fe dust destruction, and harder radiation in compact structures near Sgr A*.

References

124 extracted · 124 resolved · 2 Pith anchors

[1] Allen, M. G., Groves, B. A., Dopita, M. A., Sutherland, R. S., & Kewley, L. J. 2008, ApJS, 178, 20, doi: 10.1086/589652 2008 · doi:10.1086/589652

[2] Anastasopoulou, K., Ponti, G., Sormani, M. C., et al. 2023, A&A, 671, A55, doi: 10.1051/0004-6361/202245001 2023 · doi:10.1051/0004-6361/202245001

[3] 2023, A&A Rv, 31, 1, doi: 10.1007/s00159-022-00146-x 2023 · doi:10.1007/s00159-022-00146-x

[4] Argyriou, I., Glasse, A., Law, D. R., et al. 2023, A&A, 675, A111, doi: 10.1051/0004-6361/202346489 2023 · doi:10.1051/0004-6361/202346489

[5] The chemical make-up of the Sun: A 2020 vision 2021 · doi:10.1051/0004-6361/202140445

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-17T23:39:13.209862Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6fac518649498dffd7b882916708311aec3a848513ec53d627327c52cc6370ff

Aliases

arxiv: 2605.13995 · arxiv_version: 2605.13995v1 · doi: 10.48550/arxiv.2605.13995 · pith_short_12: N6WFDBSJJGG7 · pith_short_16: N6WFDBSJJGG77V5Y · pith_short_8: N6WFDBSJ

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/N6WFDBSJJGG77V5YQKIWOCBRDL \
  | 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: 6fac518649498dffd7b882916708311aec3a848513ec53d627327c52cc6370ff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b4fa444d3ae5c7ca469612839f9c92eca06916376d4a3f2648d10c3b289b1d8e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-05-13T18:06:25Z",
    "title_canon_sha256": "34378e2bba4d964451f7ba5e16faa2157c6f880653ce02e7d3cbd6dab3a76050"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.13995",
    "kind": "arxiv",
    "version": 1
  }
}