Seismic Emission from the Solar Flares of 2003 October 28 and 29

Donea, Alina-Catalina; Lindsey, C.

doi:10.1086/432155

Cited by 102 publications

(137 citation statements)

References 25 publications

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“…13a), [90][91][92][93], or indirectly by calculating integrated acoustic emission [94][95][96]. Solar flares are sources of high-temperature plasma and strong hydrodynamic motions in the solar atmosphere.…”

Section: Magnetic Effects: Sunspot Oscillations and Acoustic Halosmentioning

confidence: 99%

Advances in Global and Local Helioseismology: An Introductory Review

Kosovichev

2011

The Pulsations of the Sun and the Stars

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Abstract. Helioseismology studies the structure and dynamics of the Sun's interior by observing oscillations on the surface. These studies provide information about the physical processes that control the evolution and magnetic activity of the Sun. In recent years, helioseismology has made substantial progress towards the understanding of the physics of solar oscillations and the physical processes inside the Sun, thanks to observational, theoretical and modeling efforts. In addition to the global seismology of the Sun based on measurements of global oscillation modes, a new field of local helioseismology, which studies oscillation travel times and local frequency shifts, has been developed. It is capable of providing 3D images of the subsurface structures and flows. The basic principles, recent advances and perspectives of global and local helioseismology are reviewed in this article.

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Section: Magnetic Effects: Sunspot Oscillations and Acoustic Halosmentioning

confidence: 99%

Advances in Global and Local Helioseismology: An Introductory Review

Kosovichev

2011

The Pulsations of the Sun and the Stars

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“…It became clear that sunquakes are a rather rare phenomenon on the Sun, which occurs only under some special conditions. Surprisingly, seven years later several flares did show strong "egression" signals indicating new potential sunquakes (Donea & Lindsey 2005) (for a list see http://www.maths.monash.edu.au/˜adonea). It is interesting to note that the flare of July 9, 1996, was the last strong of the previous solar activity cycle, and the new strong sunquake events are observed in the declining phase of the current activity cycle after the maximum of 2000-2001. It appears that during the rising phase of the solar cycle and during its peak the solar flares are rather a "superficial" coronal phenomenon not affecting much the solar surface and interior.…”

Section: Introductionmentioning

confidence: 99%

Properties of Flares-Generated Seismic Waves on the Sun

Kosovichev

2006

Sol Phys

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The solar seismic waves excited by solar flares ("sunquakes") are observed as circular expanding waves on the Sun's surface. The first sunquake was observed for a flare of July 9, 1996, from the Solar and Heliospheric Observatory (SOHO) space mission. However, when the new solar cycle started in 1997, the observa- These observations show a close association between the flare seismic waves and the hard X-ray source, indicating that highenergy electrons accelerated during the flare impulsive phase produced strong compression waves in the photosphere, causing the sunquake. The results also reveal new physical properties such as strong anisotropy of the seismic waves, the amplitude of which varies significantly with the direction of propagation. The waves travel through surrounding sunspot regions to large distances, up to 120 Mm, without significant decay. These observations open new perspectives for helioseismic diagnostics of flaring active regions on the Sun and for understanding the mechanisms of the energy release and transport in solar flares.

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“…Additional flare-triggered oscillations have also been detected in Ha with periods of s (McAteer et al 2005b), and in seismic P p 40-80 (photospheric) magnetogram data, probably triggered by precipitating high-energy protons (Donea & Lindsey 2005).…”

Section: Flare Oscillations and Wavesmentioning

confidence: 82%

Astrophysics in 2005

Trimble

Aschwanden

Hansen

2006

PUBL ASTRON SOC PAC

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ABSTRACT. We bring you, as usual, the Sun and Moon and stars, plus some galaxies and a new section on astrobiology. Some highlights are short (the newly identified class of gamma-ray bursts, and the Deep Impact on Comet 9P/Tempel 1), some long (the age of the universe, which will be found to have the Earth at its center), and a few metonymic, for instance the term "down-sizing" to describe the evolution of star formation rates with redshift.

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Seismic Emission from the Solar Flares of 2003 October 28 and 29

Cited by 102 publications

References 25 publications

Advances in Global and Local Helioseismology: An Introductory Review

Advances in Global and Local Helioseismology: An Introductory Review

Properties of Flares-Generated Seismic Waves on the Sun

Astrophysics in 2005

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