Pith Number

pith:WALSWFDM

pith:2026:WALSWFDML2CZTRPISJR2OS4EK5

not attested not anchored not stored refs pending

The impact of plasma instability cooling on intergalactic magnetic field constraints in GeV cascades for optimized instability cooling parameters

G\"unter Sigl, Simone Rossoni, Suman Dey

Plasma instabilities with a characteristic length scale of order 100 kpc cool electron-positron pairs enough to reproduce observed GeV spectra from blazars while implying intergalactic magnetic fields of order 10^{-17} G.

arxiv:2604.08375 v2 · 2026-04-09 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WALSWFDML2CZTRPISJR2OS4EK5}

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

plasma instabilities with a characteristic length scale of order 10^{2} kpc reproduce the observed photon spectrum and imply an IGMF strength of order 10^{-17} G

C2weakest assumption

The ad-hoc parameterized cooling term accurately captures the physical effect of plasma instabilities on pair energy loss before inverse-Compton scattering.

C3one line summary

Plasma instabilities on ~100 kpc scales cool pairs in GeV cascades from 1ES 0229+200, yielding an IGMF strength of order 10^{-17} G when fitted to Fermi-LAT observations.

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-07-01T01:17:50.310600Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b0172b146c5e8599c5e89263a74b84576c6d9fc57d0be3ecce43b07587448c41

Aliases

arxiv: 2604.08375 · arxiv_version: 2604.08375v2 · doi: 10.48550/arxiv.2604.08375 · pith_short_12: WALSWFDML2CZ · pith_short_16: WALSWFDML2CZTRPI · pith_short_8: WALSWFDM

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/WALSWFDML2CZTRPISJR2OS4EK5 \
  | 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: b0172b146c5e8599c5e89263a74b84576c6d9fc57d0be3ecce43b07587448c41

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f60f285d29b789950220b93233715a994cc127a98313c4715fc247cf402d0374",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2026-04-09T15:38:02Z",
    "title_canon_sha256": "8f3447383b728745d55575cf5e6f52ff1824363c0f19a696577adfc487308825"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.08375",
    "kind": "arxiv",
    "version": 2
  }
}