Pith Number

pith:U5WP5GI2

pith:2026:U5WP5GI26M5QW6CYBTG4VYG3GY

not attested not anchored not stored refs pending

Rapid-response 1.3 mm Observations of GRB 260127A with the Submillimeter Array

Anna Y. Q. Ho, Chloe T. Xu, Edo Berger, Garrett K. Keating, Joshua Bennett Lovell, Kate D. Alexander, Mark Gurwell, Peter K. Blanchard, Peter K. G. Williams, Ramprasad Rao, Tanmoy Laskar, Tarraneh Eftekhari

SMA observations indicate the 1.3 mm afterglow of GRB 260127A declined at least as fast as t^{-0.5} if the detection is associated.

arxiv:2604.14297 v2 · 2026-04-15 · astro-ph.HE · astro-ph.IM

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U5WP5GI26M5QW6CYBTG4VYG3GY}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

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

If the SMA detection is associated with GRB 260127A, we infer that the 1.3 mm light curve for GRB 260127A declined at least as fast as t^{-0.5}, suggesting that peak brightness of the event at this wavelength was reached in under a day.

C2weakest assumption

The 6.9 mJy SMA source is physically associated with GRB 260127A despite the 2.7 arcsec offset from the optical afterglow position and the 0.9 arcsec radial uncertainty.

C3one line summary

SMA detected a 6.9 mJy source at 1.3 mm from GRB 260127A 12.6 minutes post-trigger with a 2.7 arcsec offset from the optical position; no emission was seen 1.9 days later, implying a decline at least as steep as t to the -0.5.

Receipt and verification

First computed	2026-05-22T02:04:41.168689Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a76cfe991af33b0b78580ccdcae0db360c2bb788326061f3a5b59883d968e366

Aliases

arxiv: 2604.14297 · arxiv_version: 2604.14297v2 · doi: 10.48550/arxiv.2604.14297 · pith_short_12: U5WP5GI26M5Q · pith_short_16: U5WP5GI26M5QW6CY · pith_short_8: U5WP5GI2

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/U5WP5GI26M5QW6CYBTG4VYG3GY \
  | 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: a76cfe991af33b0b78580ccdcae0db360c2bb788326061f3a5b59883d968e366

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "980d84935f93fc51f9dd64cdd8841b4329d37645a096b3370e1177c08f3668f3",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2026-04-15T18:00:21Z",
    "title_canon_sha256": "aa34edec6bd0bcaecda5cf4e6d7fb31f2964665ff15fdecae341b8ddfe820b03"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.14297",
    "kind": "arxiv",
    "version": 2
  }
}