Pith Number

pith:ICGKS7RM

pith:2026:ICGKS7RMSOAWUIWKIKS2IJA73C

not attested not anchored not stored refs pending

GRRMHD Simulations of State Transitions in Non-Jetted Tidal Disruption Events

Aviyel Ahiyya, Brandon Curd, Richard Anantua, Safira Heridia

GRRMHD simulations show TDE disks become thermally unstable in 17-46 days, causing X-ray luminosity to drop by nearly 100 times.

arxiv:2604.23916 v2 · 2026-04-27 · astro-ph.HE

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Claims

C1strongest claim

We find that the disk becomes thermally unstable within 17.1-46.5 days depending on the spin of the BH. Thermal spectra show a soft X-ray excess prior to collapse, with a nearly two order of magnitude decline in X-ray luminosity upon disk collapse. The spectral properties and soft X-ray luminosity in our models are similar to the TDE AT2021ehb.

C2weakest assumption

The initial magnetized torus accurately represents the late-stage debris from the cooling envelope model without requiring full self-consistent evolution from the initial stellar disruption; the simulations also assume standard ideal MHD and radiative cooling prescriptions whose validity at these densities is not re-derived here.

C3one line summary

GRRMHD simulations of TDE debris disks reveal thermal instability and collapse within weeks, producing soft X-ray excess followed by a sharp luminosity drop that resembles AT2021ehb observations.

Receipt and verification

First computed	2026-07-02T00:18:29.192930Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

408ca97e2c93816a22ca42a5a4241fd897e381565ba3bea54eab4967f75c66dd

Aliases

arxiv: 2604.23916 · arxiv_version: 2604.23916v2 · doi: 10.48550/arxiv.2604.23916 · pith_short_12: ICGKS7RMSOAW · pith_short_16: ICGKS7RMSOAWUIWK · pith_short_8: ICGKS7RM

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/ICGKS7RMSOAWUIWKIKS2IJA73C \
  | 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: 408ca97e2c93816a22ca42a5a4241fd897e381565ba3bea54eab4967f75c66dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1554eadd08633113e20a55c94c82d71c7aad5ce8a764e83edb78f5346a4930be",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2026-04-27T00:10:19Z",
    "title_canon_sha256": "17601f34e19e5c56e07e70bda9929e8aa65deac313d407a04a32577c69e0073e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.23916",
    "kind": "arxiv",
    "version": 2
  }
}