Pith Number

pith:T7OWK4J3

pith:2026:T7OWK4J3UWKT5Y5CQ2TFTAIIWW

not attested not anchored not stored refs pending

Solar Extreme Ultraviolet Spectrograph and High-energy Imager (SEUSHI): Design, Development, and Pre-Flight Calibration

Alan Sims, Anant Telikicherla, Andrew R. Jones, Bennet D. Schwab, Dave Crotser, James P. Mason, Philip Chamberlin, Robert H. Sewell, Thomas N. Woods, Wyatt ZagorecMarks

SEUSHI combines multi-pinhole SXR imaging and grazing-incidence EUV spectroscopy on a shared camera to deliver temperature and emission measure maps at 1 arcminute resolution every 5 seconds.

arxiv:2604.07537 v2 · 2026-04-08 · astro-ph.SR

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\usepackage{pith}
\pithnumber{T7OWK4J3UWKT5Y5CQ2TFTAIIWW}

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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

SEUSHI delivers spatially-resolved temperature and emission measure maps at 1 arcminute resolution and 5 second cadence to identify Hot Onset Precursor Events (HOPEs), which provide early alerts of flares. Additionally, high-cadence (100 Hz) readouts enable photon-counting spectroscopy over 1.1-6.8 keV with approx. 0.08 keV energy resolution.

C2weakest assumption

The combined multi-pinhole SXR imaging and grazing-incidence EUV spectroscopy on a shared camera will achieve the stated resolutions, cadences, and energy resolution without significant interference or degradation in the space environment.

C3one line summary

SEUSHI is a compact instrument providing 1-arcmin temperature maps every 5 seconds and high-cadence EUV spectra to detect early flare precursors and study coronal heating.

Receipt and verification

First computed	2026-05-20T00:02:11.284039Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9fdd65713ba5953ee3a286a6598108b5af8433d6e4c5040e635775bc8fa2849c

Aliases

arxiv: 2604.07537 · arxiv_version: 2604.07537v2 · doi: 10.48550/arxiv.2604.07537 · pith_short_12: T7OWK4J3UWKT · pith_short_16: T7OWK4J3UWKT5Y5C · pith_short_8: T7OWK4J3

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/T7OWK4J3UWKT5Y5CQ2TFTAIIWW \
  | 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: 9fdd65713ba5953ee3a286a6598108b5af8433d6e4c5040e635775bc8fa2849c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a1d1817df7d87091e07d6fffdc77eb0000eb4348335c3b7601a7107526314fac",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2026-04-08T19:18:52Z",
    "title_canon_sha256": "69d4e8e1f8663f61be96d0897c5af0167835b3f5fd66227efb5bad70d9c866e2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.07537",
    "kind": "arxiv",
    "version": 2
  }
}