Pith Number

pith:AXJPYB4M

pith:2026:AXJPYB4M5VXMUWXM4O5VGWOXE6

not attested not anchored not stored refs pending

Characterizing Earth analogs may require a moderate or high-resolution spectrograph

Beck Dacus, Bertrand Mennesson, Bruce Macintosh, Corey Spohn, Dimitri Mawet, Dmitry Savransky, Jean-Baptiste Ruffio, Ji Wang, Kielan Hoch, Laurent Pueyo, Marshall D. Perrin, Michael W. McElwain, Nicole Wolff, Pin Chen, Quinn M. Konopacky, Renyu Hu, Sarah Steiger, Shelley A. Wright, Tyler D. Robinson

Moderate or high spectral resolution is required to detect biosignatures in Earth analog planets because low resolution allows correlated speckle noise to suppress the signals.

arxiv:2604.17554 v2 · 2026-04-19 · astro-ph.IM · astro-ph.EP

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\usepackage{pith}
\pithnumber{AXJPYB4M5VXMUWXM4O5VGWOXE6}

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Record completeness

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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

Our findings suggest that a moderate or high resolution spectrograph (R>1,000) will provide higher sensitivity to critical molecules compared to a low resolution spectroscopy mode (e.g., R~140). The correlated speckle noise may also entirely suppress our ability to detect bio-signatures at low spectral resolutions.

C2weakest assumption

The simulation toolkit assumes that template matching fully captures detection significance when accounting for spectral correlation of residual starlight, and that the chosen representative mission parameters and noise floors are sufficient to compare resolutions across the full range from R<100 to R>10,000.

C3one line summary

Moderate to high spectral resolution (R>1000) provides higher sensitivity for detecting key molecules like H2O and O2 in Earth analogs than low resolution (R~140), as correlated speckle noise can suppress detections at low resolutions.

Cited by

1 paper in Pith

The effect of spectral resolution on biosignature detection via reflected light observations of the Earth through time

Receipt and verification

First computed	2026-06-10T01:08:35.696671Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

05d2fc078ced6eca5aece3bb5359d7278c8e61370eddfa525f317aa3bdd00f88

Aliases

arxiv: 2604.17554 · arxiv_version: 2604.17554v2 · doi: 10.48550/arxiv.2604.17554 · pith_short_12: AXJPYB4M5VXM · pith_short_16: AXJPYB4M5VXMUWXM · pith_short_8: AXJPYB4M

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/AXJPYB4M5VXMUWXM4O5VGWOXE6 \
  | 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: 05d2fc078ced6eca5aece3bb5359d7278c8e61370eddfa525f317aa3bdd00f88

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4c5462ac3c508b4afbc4bb3eb141b7224eab18b66a12880fa236fedc4f6657e6",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2026-04-19T17:47:05Z",
    "title_canon_sha256": "fe8b6b3216dbf05de10d905ed9d2ff4d6d995f1546b2e32d4dab4b70237c76ba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.17554",
    "kind": "arxiv",
    "version": 2
  }
}