Pith Number

pith:F4OJBJZJ

pith:2025:F4OJBJZJAW7CL3QWFMMROMKZEX

not attested not anchored not stored refs pending

EP250827b/SN 2025wkm: An X-ray Flash-Supernova Powered by a Central Engine and Circumstellar Interaction

Abdusamatjan Iskandar, Alberto J. Castro-Tirado, Aleksandra Bochenek, Ali Esamdin, Amar Aryan, Annabelle E. Niblett, Anna Y. Q. Ho, Anthony L. Piro, Antonella Palmese, Ben Rusholme, Binbin Zhang, Brendan O'Connor, Cassie Sevilla, Chen Zhang, Chichuan Jin, Christopher L. Fryer, Constantin Tabor, Curtis McCully, D. Andrew Howell, Daniel A. Perley, Daniel Gruen, Dong Xu, Dongyue Li, Emilio Fern\'andez-Garc\'ia, Eric Burns, Eric C. Bellm, Estefania Padilla Gonzalez, Frank J. Masci, Genevieve Schroeder, Giacomo Terreran, Gokul P. Srinivasaragavan, Grace Daja, Gursimran Bhullar, Han-Long Peng, Heyang Liu, Huaqing Chen, Hui Sun, Ignacio P\'erez-Garc\'ia, Jennifer Faba-Moreno, Jesper Sollerman, Jialian Liu, Ji-an Jiang, Jie An, Jingwei Hu, Joahan Castaneda Jaims, Johan P.U. Fynbo, Joseph Farah, Josiah Purdum, Jule Augustin, Julius Gassert, Kangrui Ni, Kanthanakorn Noysena, Kathryn Wynn, Krittapas Chanchaiworawit, Letian Wang, Linbo He, Lin Yan, Malte Busmann, Mansi Kasliwal, Maria D. Caballero-Garc\'ia, Maria Edvige Ravasio, Maria Gritsevich, Matthew Graham, M. Coleman Miller, Megan Newsome, Moira Andrews, Niharika Sravan, Nikhil Sarin, Ning Jiang, Ore Gottlieb, Pablo Vega, Qinyu Wu, Robert Stein, Roger Smith, Rub\'en S\'anchez-Ram\'irez, Runduo Liang, Samaporn Tinyanont, Sam Rose, S. Bradley Cenko, Sergiy Guziy, Shaoyu Fu, Shashi B. Pandey, Shengyu Yan, Shreya Anand, Shuaijiao Jiang, Siyu Wu, Tao An, Tinggu Wang, Tom\'as Ahumada, Weimin Yuan, Wenxiong Li, Xander J. Hall, Xiaofeng Wang, Xiaoxiong Zuo, Xing Liu, Xuefeng Wu, You-Dong Hu, Yuan Liu, Yujia Song, Yu-Jing Qin, Yunfei Xu, Zhixing Ling, Zipei Zhu

A magnetar central engine powers an X-ray flash supernova through wind breakout in circumstellar material

arxiv:2512.10239 v3 · 2025-12-11 · astro-ph.HE

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\pithnumber{F4OJBJZJAW7CL3QWFMMROMKZEX}

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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 collapse gives rise to a long-lived magnetar, potentially surrounded by an accretion disk. Magnetically-driven winds from the magnetar and the disk mix together and break out with a velocity ∼0.35c and interact with an extended circumstellar medium with radius ∼10^13 cm, generating X-ray breakout emission through non-thermal free-free processes.

C2weakest assumption

The X-ray emission arises specifically from non-thermal free-free processes in the magnetar/disk wind breakout through the CSM at the quoted radius and velocity; this is invoked to simultaneously explain the soft X-ray spectrum, duration, and optical plateau without independent verification of the wind properties or CSM structure.

C3one line summary

EP250827b/SN 2025wkm is an X-ray flash supernova at z=0.1194 powered by a long-lived magnetar and disk winds interacting with extended circumstellar medium, without an on-axis relativistic jet.

Formal links

2 machine-checked theorem links

Cited by

3 papers in Pith

GRB 260310A/SN 2026fgk: Photometric and Spectroscopic Evolution of a Nearby GRB-Supernova and an Exceptionally Bright Afterglow at z=0.153

XRF 241001A/SN 2024aiiq: A Faint Soft X-ray Transient Detected by SVOM with a Broad-Line Type Ic Supernova Revealed by JWST

Magnetar Engines in Broad-lined Type Ic Supernovae and a Unified Picture for Magnetar-powered Stripped-envelope Supernovae

Receipt and verification

First computed	2026-06-08T01:03:53.732765Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2f1c90a72905be25ee162b1917315925c3478a20c5766aa5a8a6e480a8995ad2

Aliases

arxiv: 2512.10239 · arxiv_version: 2512.10239v3 · doi: 10.48550/arxiv.2512.10239 · pith_short_12: F4OJBJZJAW7C · pith_short_16: F4OJBJZJAW7CL3QW · pith_short_8: F4OJBJZJ

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/F4OJBJZJAW7CL3QWFMMROMKZEX \
  | 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: 2f1c90a72905be25ee162b1917315925c3478a20c5766aa5a8a6e480a8995ad2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ceb72bb406da7d062af1bd03877d9d6c19abd98e6181602be78b1c4a1f0a9fd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2025-12-11T02:44:47Z",
    "title_canon_sha256": "335872d835c0c98007282ed3cb271a62bcce30ec287c97622ca05bc0d9e81de8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2512.10239",
    "kind": "arxiv",
    "version": 3
  }
}