Pith Number

pith:OHIIU7JP

pith:2025:OHIIU7JP7PBQQKIVHSGN6TLMGS

not attested not anchored not stored refs resolved

Study of Flat Spectrum Radio Quasars and BL Lacertae Objects as Sources of Diffusive Ultra High-Energy Cosmic Rays

Swaraj Pratim Sarmah, Umananda Dev Goswami

BL Lacertae objects reproduce the observed ultra-high-energy cosmic ray flux and isotropy while Flat Spectrum Radio Quasars are ruled out by source density and anisotropy.

arxiv:2511.08153 v3 · 2025-11-11 · astro-ph.HE

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\usepackage{pith}
\pithnumber{OHIIU7JP7PBQQKIVHSGN6TLMGS}

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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

Our results show that although both FSRQs and BL Lac objects can reproduce the observed UHECR flux, the FSRQ scenario is disfavoured by anisotropy and inconsistent source density, while BL Lacs remain consistent with observations.

C2weakest assumption

That gamma-ray luminosity functions and their luminosity-dependent density evolution can be directly mapped onto the cosmic-ray source population without additional selection effects or different evolution for hadronic versus leptonic emission.

C3one line summary

BL Lacs remain consistent with UHECR observations while FSRQs are disfavoured by anisotropy and source density mismatches after propagation modeling.

References

95 extracted · 95 resolved · 57 Pith anchors

[1] The Astrophysics of Ultrahigh Energy Cosmic Rays 2011 · arXiv:1101.4256

[2] Ultra-High-Energy Cosmic Rays 2019 · arXiv:1807.09645

[3] Ultra-High Energy Cosmic Ray Probes of Large Scale Structure and Magnetic Fields 2004 · arXiv:astro-ph/0401084

[4] Propagation of high-energy cosmic rays in extragalactic turbulent magnetic fields: resulting energy spectrum and composition 2008 · arXiv:0709.1541

[5] Transition from galactic to extragalactic cosmic rays 2012 · arXiv:1211.0494

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-20T01:05:01.550926Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

71d08a7d2ffbc30829153c8cdf4d6c3497a85571be6ac1b12cd48b385b610b33

Aliases

arxiv: 2511.08153 · arxiv_version: 2511.08153v3 · doi: 10.48550/arxiv.2511.08153 · pith_short_12: OHIIU7JP7PBQ · pith_short_16: OHIIU7JP7PBQQKIV · pith_short_8: OHIIU7JP

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/OHIIU7JP7PBQQKIVHSGN6TLMGS \
  | 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: 71d08a7d2ffbc30829153c8cdf4d6c3497a85571be6ac1b12cd48b385b610b33

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "42d5b26374cc2fd4e8370905f1b7697a3de6e4769bdb7bc76dcf472b0e96c7f4",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2025-11-11T12:05:29Z",
    "title_canon_sha256": "165e5c63962f593672ad87860ce9853efa9eca60fd6e19011818587025e2d642"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2511.08153",
    "kind": "arxiv",
    "version": 3
  }
}