Helioseismic observations of magnetic flux emergence and flare effects

A. G. Kosovichev; T. L. Duvall

doi:10.1017/S1743921306002195

Helioseismic observations of magnetic flux emergence and flare effects

Research output: Contribution to journal › Article › peer-review

Abstract

Time-distance helioseismology and data from SOHO/MDI are used for obtaining 3D images of subsurface sound-speed perturbations and maps of plasma flows, associated with emerging magnetic flux and flaring activity of large active regions in October 2003. The results reveal extremely complicated dynamical processes in the upper convection zone and indicate that subsurface shear flows may play an important role in magnetic energy release in solar flares. Strong X-class flares generated impulsive seismic waves ("sunquakes"), traveling through surrounding sunspots, thus providing new insight into the interaction of seismic waves with magnetic fields.

Original language	English (US)
Pages (from-to)	365-368
Number of pages	4
Journal	Proceedings of the International Astronomical Union
Volume	2
Issue number	233
DOIs	https://doi.org/10.1017/S1743921306002195
State	Published - Mar 2006
Externally published	Yes

All Science Journal Classification (ASJC) codes

Medicine (miscellaneous)
Astronomy and Astrophysics
Nutrition and Dietetics
Public Health, Environmental and Occupational Health
Space and Planetary Science

Keywords

Flares
Gamma rays
Interior
Magnetic fields
Oscillations
Particle emission
Sun: helioseismology
Sunspots
X-rays

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10.1017/S1743921306002195

Cite this

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abstract = "Time-distance helioseismology and data from SOHO/MDI are used for obtaining 3D images of subsurface sound-speed perturbations and maps of plasma flows, associated with emerging magnetic flux and flaring activity of large active regions in October 2003. The results reveal extremely complicated dynamical processes in the upper convection zone and indicate that subsurface shear flows may play an important role in magnetic energy release in solar flares. Strong X-class flares generated impulsive seismic waves ({"}sunquakes{"}), traveling through surrounding sunspots, thus providing new insight into the interaction of seismic waves with magnetic fields.",

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author = "Kosovichev, {A. G.} and Duvall, {T. L.}",

year = "2006",

month = mar,

doi = "10.1017/S1743921306002195",

language = "English (US)",

volume = "2",

pages = "365--368",

journal = "Proceedings of the International Astronomical Union",

issn = "1743-9213",

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TY - JOUR

T1 - Helioseismic observations of magnetic flux emergence and flare effects

AU - Kosovichev, A. G.

AU - Duvall, T. L.

PY - 2006/3

Y1 - 2006/3

N2 - Time-distance helioseismology and data from SOHO/MDI are used for obtaining 3D images of subsurface sound-speed perturbations and maps of plasma flows, associated with emerging magnetic flux and flaring activity of large active regions in October 2003. The results reveal extremely complicated dynamical processes in the upper convection zone and indicate that subsurface shear flows may play an important role in magnetic energy release in solar flares. Strong X-class flares generated impulsive seismic waves ("sunquakes"), traveling through surrounding sunspots, thus providing new insight into the interaction of seismic waves with magnetic fields.

AB - Time-distance helioseismology and data from SOHO/MDI are used for obtaining 3D images of subsurface sound-speed perturbations and maps of plasma flows, associated with emerging magnetic flux and flaring activity of large active regions in October 2003. The results reveal extremely complicated dynamical processes in the upper convection zone and indicate that subsurface shear flows may play an important role in magnetic energy release in solar flares. Strong X-class flares generated impulsive seismic waves ("sunquakes"), traveling through surrounding sunspots, thus providing new insight into the interaction of seismic waves with magnetic fields.

KW - Flares

KW - Gamma rays

KW - Interior

KW - Magnetic fields

KW - Oscillations

KW - Particle emission

KW - Sun: helioseismology

KW - Sunspots

KW - X-rays

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U2 - 10.1017/S1743921306002195

DO - 10.1017/S1743921306002195

M3 - Article

AN - SCOPUS:33750723151

SN - 1743-9213

VL - 2

SP - 365

EP - 368

JO - Proceedings of the International Astronomical Union

JF - Proceedings of the International Astronomical Union

IS - 233

ER -

Helioseismic observations of magnetic flux emergence and flare effects

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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