The rotation-powered nature of some soft gamma-ray repeaters and anomalous X-ray pulsars

2016/12/06 by Jaziel G. Coelho, D. L. Cáceres, Rafael C. R. de Lima +4
Physics and Astronomy · #Astronomy #Astrophysical Phenomena and Observations #Astrophysics #Atomic physics #Galaxy #Gamma-ray bursts and supernovae #Geometry #Luminosity #Magnetar #Optics #Physics #Pulsar #Pulsars and Gravitational Waves Research #Rotation (mathematics) #Rotation period #Rotational energy #Stars #Supernova #X-ray #astro-ph.HE #astro-ph.SR #hep-ph #nucl-th

paper · pdf · doi:10.1051/0004-6361/201629521

published as A&A 599, A87 (2017) · 11 pages, 14 figures, to appear in A&A

arxiv created 2016/12/06 · openalex publication_date 2016/12/19 · arxiv updated 2017/03/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06

Abstract

Context. Soft gamma-ray repeaters (SGRs) and anomalous X-ray pulsars (AXPs) are slow rotating isolated pulsars whose energy reservoir is still matter of debate. Adopting neutron star (NS) fiducial parameters; mass M = 1.4 M⊙, radius R = 10 km, and moment of inertia, I = 1045 g cm2, the rotational energy loss, Ėrot, is lower than the observed luminosity (dominated by the X-rays) LX for many of the sources.

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