Magnetars: Structure and evolution from p-star models

Abstract

P-stars are compact stars made of up and down quarks in $\beta$-equilibrium with electrons in a chromomagnetic condensate. We discuss p-stars endowed with super strong dipolar magnetic field which, following consolidated tradition in literature, are referred to as magnetars. We show that soft gamma-ray repeaters and anomalous $X$-ray pulsars can be understood within our theory. We find a well defined criterion to distinguish rotation powered pulsars from magnetic powered pulsars. We show that glitches, that in our magnetars are triggered by magnetic dissipative effects in the inner core, explain both the quiescent emission and bursts in soft gamma-ray repeaters and anomalous $X$-ray pulsars. We account for the braking glitch from SGR 1900+14 and the normal glitch from AXP 1E 2259+586 following a giant burst. We discuss and explain the observed anti correlation between hardness ratio and intensity. Within our magnetar theory we are able to account quantitatively for light curves for both gamma-ray repeaters and anomalous $X$-ray pulsars. In particular we explain the puzzling light curve after the June 18, 2002 giant burst from AXP 1E 2259+586.

42 pages, 15 figures, accepted for publication in Astronomy & Astrophysics

References in corpus (10)

• An exceptionally bright flare from SGR1806-20 and the origins of short-duration gamma-ray bursts
• An expanding radio nebula produced by a giant flare from the magnetar SGR 1806-20
• The first giant flare from SGR 1806-20: observations with the INTEGRAL SPI Anti-Coincidence Shield
• Diagnosing the outflow from the SGR 1806-20 Giant Flare with Radio Observations
• A XMM-Newton View of the Soft Gamma-ray Repeater SGR 1806--20: Long Term Variability in the pre-Super Giant Flare Epoch
• A Re-brightening of the Radio Nebula associated with the 2004 December 27 giant flare from SGR 1806--20
• Correlated Infrared and X-ray Flux Changes Following the 2002 June Outburst of the Anomalous X-ray Pulsar 1E 2259+586
• An energetic blast wave from the December 27 giant flare of the soft gamma-ray repeater 1806-20
• Magnetars: Structure and evolution from p-star models
• High resolution X-ray spectra of quasars

Cited by in corpus (12)

• The strongest cosmic magnets: Soft Gamma-ray Repeaters and Anomalous X-ray Pulsars
• A Comprehensive Study of Short Bursts from SGR 1806-20 and SGR 1900+14 Detected by HETE-2
• X-ray emission from isolated neutron stars
• Suzaku Observations of SGR 1900+14 and SGR 1806-20
• Uniting the Quiescent Emission and Burst Spectra of Magnetar Candidates
• Magnetars: Structure and evolution from p-star models
• Astrophysics in 2006
• The magnetar candidate AX J1818.8-1559
• The Swift Discovery of X-ray Afterglows Accompanying Short Bursts from SGR 1900+14
• Comparing P-stars with Observations
• P-stars in the gravitational wave era
• Light Curves of Swift Gamma Ray Bursts