Evidence of an Energetic Magnetar Powering 1LHAASO J0500$+$4454
J. A. J. Alford, J. D. Gelfand, M. Abdelmaguid, and P. Slane

TL;DR
This paper investigates the origin of the TeV source 1LHAASO J0500+4454, providing evidence that a magnetar-powered nebula is the most plausible explanation over other scenarios, with implications for magnetar formation.
Contribution
The study rules out molecular cloud and supernova remnant origins, and suggests a magnetar-powered nebula as the source, offering new insights into magnetar energy budgets and formation.
Findings
Upper limits disfavor molecular cloud and SNR scenarios.
SED modeling indicates a nebula particle energy of ~4×10^{48} erg.
Magnetar energy budget implies initial spin period ≤ 5 ms.
Abstract
We investigate the origin of unidentified, extended TeV source 1LHAASO J05004454, considering three possible origins: cosmic rays interacting with a molecular cloud (MC), particles accelerated in a currently undetected supernova remnant (SNR), and an energetic outflow powered by a pulsar. Upper limits on the CO and X-ray emission from the -ray emitting region disfavor the MC and SNR scenarios, respectively. If a nebula of inverse Compton scattering powers 1LHAASO J05004454, then SED modeling indicates that the current particle energy in the nebula is erg. If the coincident magnetar SGR 05014516's rotational energy powered 1LHAASO J05004454, then a conservative energy budget calculation requires an initial magnetar spin period ms and a spin-down timescale yr, which has implications for…
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Taxonomy
TopicsAstrophysics and Cosmic Phenomena · Gamma-ray bursts and supernovae · Astrophysical Phenomena and Observations
