Magnetars: the physics behind observations. A review.
TLDR
A comprehensive overview of magnetar research, in which the observational results are discussed in the light of the most up-to-date theoretical models and their implications address the more fundamental issue of how physics in strong magnetic fields can be constrained by the observations of these unique sources.Abstract:
Magnetars are the strongest magnets in the present universe and the combination of extreme magnetic field, gravity and density makes them unique laboratories to probe current physical theories (from quantum electrodynamics to general relativity) in the strong field limit. Magnetars are observed as peculiar, burst-active x-ray pulsars, the anomalous x-ray pulsars (AXPs) and the soft gamma repeaters (SGRs); the latter emitted also three 'giant flares', extremely powerful events during which luminosities can reach up to 10(47) erg s(-1) for about one second. The last five years have witnessed an explosion in magnetar research which has led, among other things, to the discovery of transient, or 'outbursting', and 'low-field' magnetars. Substantial progress has been made also on the theoretical side. Quite detailed models for explaining the magnetars' persistent x-ray emission, the properties of the bursts, the flux evolution in transient sources have been developed and confronted with observations. New insight on neutron star asteroseismology has been gained through improved models of magnetar oscillations. The long-debated issue of magnetic field decay in neutron stars has been addressed, and its importance recognized in relation to the evolution of magnetars and to the links among magnetars and other families of isolated neutron stars. The aim of this paper is to present a comprehensive overview in which the observational results are discussed in the light of the most up-to-date theoretical models and their implications. This addresses not only the particular case of magnetar sources, but the more fundamental issue of how physics in strong magnetic fields can be constrained by the observations of these unique sources.read more
Citations
More filters
Journal ArticleDOI
Electromagnetic fields and anomalous transports in heavy-ion collisions-a pedagogical review.
TL;DR: A pedagogical review of various properties of the electromagnetic fields, the anomalous transport phenomena, and their experimental signatures in heavy-ion collisions is given.
Journal ArticleDOI
INTEGRAL Discovery of a Burst with Associated Radio Emission from the Magnetar SGR 1935+2154
Sandro Mereghetti,V. G. Savchenko,Carlo Ferrigno,Diego Götz,Michela Rigoselli,Andrea Tiengo,Angela Bazzano,Enrico Bozzo,Alexis Coleiro,Thierry J.-L. Courvoisier,Maeve Doyle,Andrea Goldwurm,Lorraine Hanlon,Elisabeth Jourdain,Elisabeth Jourdain,A. von Kienlin,Alexander A. Lutovinov,Antonio Martin-Carrillo,Sergey V. Molkov,Lorenzo Natalucci,Francesca Onori,Francesca Panessa,James Rodi,J. Rodriguez,C. Sanchez-Fernandez,Rashid Sunyaev,Rashid Sunyaev,Pietro Ubertini +27 more
TL;DR: In this article, the authors reported on the INTEGRAL observations of the soft gamma-ray repeater SGR 1935+2154 performed between 2020 April 28 and May 3.
Journal ArticleDOI
Novel quantum phenomena induced by strong magnetic fields in heavy-ion collisions
TL;DR: In this paper, the magnetic effect on the heavy flavor mesons, the heavy-quark transports, and the phenomena closely related to chiral anomaly is discussed. And the magnetic field-induced novel quantum effects are discussed.
Journal ArticleDOI
Systematic study of magnetar outbursts
TL;DR: This work is supported by grants AYA2015-71042-P and SGR2014-1073 and by the Netherlands Organization for Scientific Research (NWO) Vidi award (PI: N. Rea).
Journal ArticleDOI
Radio Non-Detection of the SGR 1806-20 Giant Flare and Implications for Fast Radio Bursts
TL;DR: In this article, the Parkes radio telescope was used to observe a location 35.6$^\circ$ away from SGR 1806-20 during its giant gamma-ray flare of 2004 December 27.
References
More filters
Book
Compact Stellar X-ray Sources
TL;DR: A decade of X-ray sources and their evolution is described in this paper, with a focus on the formation and evolution of super-soft sources and the formation of compact stellar sources.
Journal ArticleDOI
Formation of very strongly magnetized neutron stars - Implications for gamma-ray bursts
TL;DR: In this article, it is argued that a convective dynamo can also generate a very strong dipole field after the merger of a neutron star binary, but only if the merged star survives for as long as about 10-100 ms.
Journal ArticleDOI
Gamma-ray bursts from stellar mass accretion disks around black holes
TL;DR: In this paper, a cosmological model for gamma-ray bursts is explored in which the radiation is produced as a broadly beamed pair fireball along the rotation axis of an accreting black hole.
Journal ArticleDOI
Collapsars: Gamma-ray bursts and explosions in 'failed supernovae'
Andrew MacFadyen,Stan Woosley +1 more
TL;DR: In this paper, the authors explore the continued evolution of rotating helium stars, Mα 10 M☉, in which iron-core collapse does not produce a successful outgoing shock but instead forms a black hole of 2-3 Mˉ.