Magnetars: Properties, Origin and Evolution

Mereghetti, S.; Pons, José A.; Melatos, A.

doi:10.1007/978-1-4939-3550-5_10

Cited by 4 publications

(14 citation statements)

References 196 publications

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“…(1). To allow the existence of CME we have assumed that the chiral symmetry in quark matter is unbroken.…”

Section: Discussionmentioning

confidence: 99%

“…In Ref. [8], we described the amplification of the seed field B 0 = 10 12 G, typical for a pulsar, to B = 10 14 − 10 15 G, predicted in magnetars [1,2]. The magnetic fields generated were large scale with 10 2 m < Λ < 10 km.…”

Section: Application For the Description Of Bursts Of Magnetarsmentioning

confidence: 94%

“…The emission of the strong electromagnetic radiation by some astrophysical objects called anomalous X-ray pulsars (AXP) and soft γ-ray repeaters (SGR) is likely to be associated with the transformation of the magnetic energy in the star interiors to the energy of hard photons [1]. The estimates of the strength of internal large scale magnetic fields necessary to explain the observed flashes give the value B 10 15 G, making these compact stars one of the most powerful magnets in the universe, or magnetars [1].…”

Section: Introductionmentioning

confidence: 99%

“…The estimates of the strength of internal large scale magnetic fields necessary to explain the observed flashes give the value B 10 15 G, making these compact stars one of the most powerful magnets in the universe, or magnetars [1]. Despite the existence of the numerous models for the generation of such strong magnetic fields based on classical magnetohydrodynamics (MHD), this issue is still an open problem for the modern astrophysics.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, there is no direct contribution of s quarks to the anomalous electric current in Eq. (1). Instead, these quarks form a background which u and d quarks electroweakly interact with.…”

Section: Introductionmentioning

confidence: 99%

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Magnetic fields in turbulent quark matter and magnetar bursts

Dvornikov

2017

Int. J. Mod. Phys. D

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We analyze the magnetic field evolution in dense quark matter with unbroken chiral symmetry, which can be found inside quark and hybrid stars. The magnetic field evolves owing to the chiral magnetic effect in the presence of the electroweak interaction between quarks. In our study, we also take into account the magnetohydrodynamic turbulence effects in dense quark matter. We derive the kinetic equations for the spectra of the magnetic helicity density and the magnetic energy density as well as for the chiral imbalances. On the basis of the numerical solution of these equations, we find that turbulence effects are important for the behavior of small scale magnetic fields. It is revealed that, under certain initial conditions, these magnetic fields behave similarly to the electromagnetic flashes of some magnetars. We suggest that fluctuations of magnetic fields, described in frames of our model, which are created in the central regions of a magnetized compact star, can initiate magnetar bursts.

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“…(1). To allow the existence of CME we have assumed that the chiral symmetry in quark matter is unbroken.…”

Section: Discussionmentioning

confidence: 99%