Deep-focus diagnostics of sunspot structure

Hamed Moradi; Shravan M Hanasoge

doi:10.1007/978-3-642-02859-5_35

Deep-focus diagnostics of sunspot structure

Hamed Moradi, Shravan M Hanasoge

School of Mathematics

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research › peer-review

Abstract

In sequel to Moradi et al. [2009, ApJ, 690, L72], we employ two established numerical forward models (a 3D ideal MHD solver and MHD ray theory) in conjunction with timea??distance helioseismology to probe the lateral extent of wave-speed perturbations produced in regions of strong, near-surface magnetic fields. We continue our comparisons of forward modeling approaches by extending our previous surface-focused travel-time measurements with a common midpoint deep-focusing scheme that avoids the use of oscillation signals within the sunspot region. The idea is to also test MHD ray theory for possible application in future inverse methods.

Original language	English
Title of host publication	Magnetic Coupling between the Interior and Atmosphere of the Sun
Editors	S S Hasan, R J Rutten
Place of Publication	Berlin Germany
Publisher	Springer-Verlag London Ltd.
Pages	378 - 385
Number of pages	8
ISBN (Print)	9783642028588
DOIs	https://doi.org/10.1007/978-3-642-02859-5_35
Publication status	Published - 2010
Event	Conference on Magnetic Coupling between the Interior and the Atmosphere of the Sun - Bangalore India, Berlin Germany Duration: 1 Jan 2010 → …

Conference

Conference	Conference on Magnetic Coupling between the Interior and the Atmosphere of the Sun
City	Berlin Germany
Period	1/01/10 → …

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title = "Deep-focus diagnostics of sunspot structure",

abstract = "In sequel to Moradi et al. [2009, ApJ, 690, L72], we employ two established numerical forward models (a 3D ideal MHD solver and MHD ray theory) in conjunction with timea??distance helioseismology to probe the lateral extent of wave-speed perturbations produced in regions of strong, near-surface magnetic fields. We continue our comparisons of forward modeling approaches by extending our previous surface-focused travel-time measurements with a common midpoint deep-focusing scheme that avoids the use of oscillation signals within the sunspot region. The idea is to also test MHD ray theory for possible application in future inverse methods.",

author = "Hamed Moradi and Hanasoge, {Shravan M}",

year = "2010",

doi = "10.1007/978-3-642-02859-5_35",

language = "English",

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pages = "378 -- 385",

editor = "Hasan, {S S} and Rutten, {R J}",

booktitle = "Magnetic Coupling between the Interior and Atmosphere of the Sun",

publisher = "Springer-Verlag London Ltd.",

address = "Germany",

note = "Conference on Magnetic Coupling between the Interior and the Atmosphere of the Sun ; Conference date: 01-01-2010",

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Moradi, H & Hanasoge, SM 2010, Deep-focus diagnostics of sunspot structure. in SS Hasan & RJ Rutten (eds), Magnetic Coupling between the Interior and Atmosphere of the Sun. Springer-Verlag London Ltd., Berlin Germany, pp. 378 - 385, Conference on Magnetic Coupling between the Interior and the Atmosphere of the Sun, Berlin Germany, 1/01/10. https://doi.org/10.1007/978-3-642-02859-5_35

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AU - Moradi, Hamed

AU - Hanasoge, Shravan M

PY - 2010

Y1 - 2010

N2 - In sequel to Moradi et al. [2009, ApJ, 690, L72], we employ two established numerical forward models (a 3D ideal MHD solver and MHD ray theory) in conjunction with timea??distance helioseismology to probe the lateral extent of wave-speed perturbations produced in regions of strong, near-surface magnetic fields. We continue our comparisons of forward modeling approaches by extending our previous surface-focused travel-time measurements with a common midpoint deep-focusing scheme that avoids the use of oscillation signals within the sunspot region. The idea is to also test MHD ray theory for possible application in future inverse methods.

AB - In sequel to Moradi et al. [2009, ApJ, 690, L72], we employ two established numerical forward models (a 3D ideal MHD solver and MHD ray theory) in conjunction with timea??distance helioseismology to probe the lateral extent of wave-speed perturbations produced in regions of strong, near-surface magnetic fields. We continue our comparisons of forward modeling approaches by extending our previous surface-focused travel-time measurements with a common midpoint deep-focusing scheme that avoids the use of oscillation signals within the sunspot region. The idea is to also test MHD ray theory for possible application in future inverse methods.

UR - http://www.springer.com/series/7395

U2 - 10.1007/978-3-642-02859-5_35

DO - 10.1007/978-3-642-02859-5_35

M3 - Conference Paper

SN - 9783642028588

SP - 378

EP - 385

BT - Magnetic Coupling between the Interior and Atmosphere of the Sun

A2 - Hasan, S S

A2 - Rutten, R J

PB - Springer-Verlag London Ltd.

CY - Berlin Germany

T2 - Conference on Magnetic Coupling between the Interior and the Atmosphere of the Sun

Y2 - 1 January 2010

ER -

Deep-focus diagnostics of sunspot structure

Abstract

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