Pith Number

pith:APXPYNFP

pith:2026:APXPYNFPNZTYOB3R4XOD4U3R2B

not attested not anchored not stored refs pending

Star-planet magnetic interactions in photoevaporating exoplanets: enhanced power due to atmospheric escape

Aline A. Vidotto, Andr\'es Presa, Filip Elekes

Higher planetary escape rates open extra magnetic flux and raise star-planet interaction power as the square root of the normalized mass-loss rate.

arxiv:2604.06064 v2 · 2026-04-07 · astro-ph.EP

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\usepackage{pith}
\pithnumber{APXPYNFPNZTYOB3R4XOD4U3R2B}

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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

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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

For higher escape rates, the planetary outflow opens additional magnetic flux, and the SPMI power increases proportionally with (Md / M0)^{1/2}. Applying this scaling law to the HD18973 system, we find that a 30 G planet could reproduce the observed power if Md ~ 10^{12} g/s.

C2weakest assumption

The 3D radiation MHD simulations correctly capture the dominant physics of magnetic flux opening by the planetary outflow without significant numerical artifacts, missing non-ideal effects, or unmodeled time-dependent stellar wind variations; the threshold M0 is accurately defined solely by pressure balance.

C3one line summary

Simulations of photoevaporating hot Jupiters show that star-planet magnetic interaction power follows the Alfvén wing model below a critical mass-loss rate and scales as the square root of the normalized mass-loss rate above it.

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-06-08T01:04:04.211515Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

03eefc34af6e67870771e5dc3e5371d05b758ff2979a040dfc50b67cce5eb15e

Aliases

arxiv: 2604.06064 · arxiv_version: 2604.06064v2 · doi: 10.48550/arxiv.2604.06064 · pith_short_12: APXPYNFPNZTY · pith_short_16: APXPYNFPNZTYOB3R · pith_short_8: APXPYNFP

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/APXPYNFPNZTYOB3R4XOD4U3R2B \
  | 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: 03eefc34af6e67870771e5dc3e5371d05b758ff2979a040dfc50b67cce5eb15e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7382867abc2d7764f9be704da0d6bf6d1bf04f38ec0e85a549403b9d84743cbe",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2026-04-07T16:46:34Z",
    "title_canon_sha256": "0fffc3acb37446409d7c7df03a37b87155c2a3aaf43147928df4bbaf81cf0330"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.06064",
    "kind": "arxiv",
    "version": 2
  }
}