Pith Number

pith:7USJEWE5

pith:2026:7USJEWE5U4C4Q7NREZX4PZRQ7R

not attested not anchored not stored refs resolved

Mechanisms for magnetic braking boost and disruption: the role of irradiation-driven winds and convective turnover time spike in cataclysmic variables

Askar Sibgatullin, Ilkham Galiullin, Vladislav Dodon, Xiang-Dong Li, Xiao-jie Xu

A spike in convective turnover time at the fully convective boundary disrupts magnetic braking in cataclysmic variables while irradiation-driven winds supply the boost during accretion.

arxiv:2605.15897 v1 · 2026-05-15 · astro-ph.SR · astro-ph.HE

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\usepackage{pith}
\pithnumber{7USJEWE5U4C4Q7NREZX4PZRQ7R}

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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

The structure-based τ_c calculation reveals a pronounced spike as the donor approaches full convection, which drives the disruption parameter η and initiates the period gap in CVs. Plausible parameter choices allow irradiation-driven winds to provide the required boost K during accreting phases.

C2weakest assumption

The outcome of irradiation is sensitive to the accretion, irradiation, and wind efficiencies, all of which are poorly constrained from observations, yet the model assumes that plausible choices for these efficiencies can simultaneously reproduce the observed boost K while remaining consistent with the donor structure used for τ_c.

C3one line summary

The iτSBD magnetic braking model attributes the boost K to irradiation-driven winds and the disruption η to a spike in convective turnover time at the fully convective boundary, yielding CV tracks consistent with observations.

References

124 extracted · 124 resolved · 0 Pith anchors

[1] Ablimit, I. & Li, X.-D. 2015, ApJ, 815, 17 2015

[2] 2003, ApJ, 582, 358 2003

[3] Araujo-Betancor, S., Knigge, C., Long, K. S., et al. 2003, ApJ, 583, 437 2003

[4] Barnes, S. A. 2003, ApJ, 586, 464 2003

[5] Barnes, S. A. 2007, ApJ, 669, 1167 2007

Receipt and verification

First computed	2026-05-20T00:01:24.347638Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd2492589da705c87db1266fc7e630fc7770deca885a59291179d8397c7f7761

Aliases

arxiv: 2605.15897 · arxiv_version: 2605.15897v1 · doi: 10.48550/arxiv.2605.15897 · pith_short_12: 7USJEWE5U4C4 · pith_short_16: 7USJEWE5U4C4Q7NR · pith_short_8: 7USJEWE5

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/7USJEWE5U4C4Q7NREZX4PZRQ7R \
  | 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: fd2492589da705c87db1266fc7e630fc7770deca885a59291179d8397c7f7761

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "de1676e2948c6f313c1fa7cf7a527e892d82a5ffa02d2dd7cf703ba115c40a66",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2026-05-15T12:28:26Z",
    "title_canon_sha256": "9c747bdaaa398d704b75f73d30856dcd85f550f0d368456c94a341056a6f7897"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.15897",
    "kind": "arxiv",
    "version": 1
  }
}