High-Quality Fast QPOs from Magnetars: An Electric Circuit Model

High-Quality Fast QPOs from Magnetars: An Electric Circuit Model

An interpretation of high-frequency (20-2400 Hz) fast quasiperiodic oscillations of magnetars in terms of an equivalent electric circuit is given. Observed periods and the very high quality of quasi-periodic oscillations are explained. The oscillation source is represented as a hot electron-positron...

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Main Authors: Stepanov Alexander, Zaitsev Valery, Valtaoja Esko
Format: Article
Language:English
Published: De Gruyter 2011-06-01
Series:Open Astronomy
Subjects:
neutron stars
flares
pulsations
coronal loops
diagnostics
Online Access:https://doi.org/10.1515/astro-2017-0292
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spelling doaj-ca182f2d3263456aa9679a31d26cc5c02021-09-06T19:40:13ZengDe GruyterOpen Astronomy2543-63762011-06-0120227528010.1515/astro-2017-0292astro-2017-0292High-Quality Fast QPOs from Magnetars: An Electric Circuit ModelStepanov Alexander0Zaitsev Valery1Valtaoja Esko2Pulkovo Observatory, Saint Petersburg 196140, Russian FederationInstitute of Applied Physics, Ulianova 46, Nizhny Novgorod, Russian FederationTurku University, Tuorla Observatory, Väisäläntie 20, FI-21500 Piikkiö, FinlandAn interpretation of high-frequency (20-2400 Hz) fast quasiperiodic oscillations of magnetars in terms of an equivalent electric circuit is given. Observed periods and the very high quality of quasi-periodic oscillations are explained. The oscillation source is represented as a hot electron-positron plasma in a ‘trapped fireball’, a system of current-carrying magnetic loops of various sizes. The physical parameters of a ‘trapped fireball’ in the flare of SGR 1806-20 (2004 December 27) are estimated.https://doi.org/10.1515/astro-2017-0292neutron starsflarespulsationscoronal loopsdiagnostics
collection DOAJ
language English
format Article
sources DOAJ
author Stepanov Alexander
Zaitsev Valery
Valtaoja Esko
spellingShingle Stepanov Alexander
Zaitsev Valery
Valtaoja Esko
High-Quality Fast QPOs from Magnetars: An Electric Circuit Model
Open Astronomy
neutron stars
flares
pulsations
coronal loops
diagnostics
author_facet Stepanov Alexander
Zaitsev Valery
Valtaoja Esko
author_sort Stepanov Alexander
title High-Quality Fast QPOs from Magnetars: An Electric Circuit Model
title_short High-Quality Fast QPOs from Magnetars: An Electric Circuit Model
title_full High-Quality Fast QPOs from Magnetars: An Electric Circuit Model
title_fullStr High-Quality Fast QPOs from Magnetars: An Electric Circuit Model
title_full_unstemmed High-Quality Fast QPOs from Magnetars: An Electric Circuit Model
title_sort high-quality fast qpos from magnetars: an electric circuit model
publisher De Gruyter
series Open Astronomy
issn 2543-6376
publishDate 2011-06-01
description An interpretation of high-frequency (20-2400 Hz) fast quasiperiodic oscillations of magnetars in terms of an equivalent electric circuit is given. Observed periods and the very high quality of quasi-periodic oscillations are explained. The oscillation source is represented as a hot electron-positron plasma in a ‘trapped fireball’, a system of current-carrying magnetic loops of various sizes. The physical parameters of a ‘trapped fireball’ in the flare of SGR 1806-20 (2004 December 27) are estimated.
topic neutron stars
flares
pulsations
coronal loops
diagnostics
url https://doi.org/10.1515/astro-2017-0292
work_keys_str_mv AT stepanovalexander highqualityfastqposfrommagnetarsanelectriccircuitmodel
AT zaitsevvalery highqualityfastqposfrommagnetarsanelectriccircuitmodel
AT valtaojaesko highqualityfastqposfrommagnetarsanelectriccircuitmodel
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