SGRs and AXPs - Magnetars or Young Quark Stars ?

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dc.creatorDar, Arnon
dc.creatorDeRújula, Alvaro
dc.date2000-02-01
dc.date2000-02-13
dc.date.accessioned2026-07-07T01:52:01Z
dc.date.available2026-07-07T01:52:01Z
dc.descriptionRecent measurements of the spin-down rates of soft gamma ray repeaters (SGRs) and anomalous X-ray pulsars (AXPs) have been interpreted as evidence that these objects are ``magnetars'': neutron stars spinning down by magnetic dipole radiation, but with a magnetic field two orders of magnitude larger than that of ordinary neutron stars. We discuss the evidence disfavouring this interpretation. We argue that, instead, the observations support the hypothesis that SGRs and AXPs are neutron stars that have suffered a transition into a denser form of nuclear matter to become, presumably, strange stars or quark stars. Their gravitational energy release while they are cooling and contracting can power both their quiescent X-ray emission and their star quakes which produce `soft' gamma ray bursts.
dc.descriptionCorrected Typos. Additional References. Minor style corrections
dc.identifierhttps://arxiv.org/abs/astro-ph/0002014
dc.identifierhttp://arxiv.org/abs/astro-ph/0002014
dc.identifierResults and Perspectives in Particle Physics (Ed. Mario Greco) Vol. XVII (2000) 13
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/485
dc.subjectAstrophysics
dc.titleSGRs and AXPs - Magnetars or Young Quark Stars ?
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