Pith Number

pith:UGZABYBN

pith:2021:UGZABYBNJDSSWQEKQIO2FSKO7O

not attested not anchored not stored refs pending

New constraints on light Axion-Like Particles using Chandra Transmission Grating Spectroscopy of the powerful cluster-hosted quasar H1821+643

Christopher S. Reynolds, Helen R. Russell, James H. Matthews, J\'ulia Sisk Reyn\'es, M. C. David Marsh, Robyn N. Smith

arxiv:2109.03261 v2 · 2021-09-07 · astro-ph.HE · astro-ph.CO · hep-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UGZABYBNJDSSWQEKQIO2FSKO7O}

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.

Cited by

8 papers in Pith

Circular polarization effects induced by photon-axion mixing in astrophysical environments

A Bandpass Axion Or: How I Learned To Stop Worrying About Stars And Love The Lab

Neutron Star Eclipses as Axion Laboratories

Ultralight dark matter detection with trapped-ion interferometry

Lights, Camera, Axion: Tracing Axions from Supernovae in the Diffuse $\gamma$-ray Sky

Receipt and verification

First computed	2026-07-05T03:45:42.662385Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a1b200e02d48e52b408a821da2c94efbbf198175217724c091e5e492a847b35a

Aliases

arxiv: 2109.03261 · arxiv_version: 2109.03261v2 · doi: 10.48550/arxiv.2109.03261 · pith_short_12: UGZABYBNJDSS · pith_short_16: UGZABYBNJDSSWQEK · pith_short_8: UGZABYBN

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/UGZABYBNJDSSWQEKQIO2FSKO7O \
  | 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: a1b200e02d48e52b408a821da2c94efbbf198175217724c091e5e492a847b35a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "175b2314507528063869d885d4389204ce3b4f627505631b83e82496e6a61376",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2021-09-07T18:02:17Z",
    "title_canon_sha256": "a8f582b1d3b4e3039528410b1ae768f3b1b2d8c3f3302813e68300d08566e919"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.03261",
    "kind": "arxiv",
    "version": 2
  }
}