Book ChapterDOI
The Solar Oscillations Investigation — Michelson Doppler Imager
Philip H. Scherrer,R. S. Bogart,R. I. Bush,J. T. Hoeksema,Alexander G. Kosovichev,Jesper Schou,W. Rosenberg,L. Springer,T. D. Tarbell,A. M. Title,C. J. Wolfson,I. Zayer +11 more
- Vol. 348, pp 129-188
TLDR
The Solar Oscillations Investigation (SOI) as mentioned in this paper uses the Michelson Doppler Imager (MDI) instrument to probe the interior of the Sun by measuring the photospheric manifestations of solar oscillations.Abstract:
The Solar Oscillations Investigation (SOI) uses the Michelson Doppler Imager (MDI) instrument to probe the interior of the Sun by measuring the photospheric manifestations of solar oscillations. Characteristics of the modes reveal the static and dynamic properties of the convection zone and core. Knowledge of these properties will improve our understanding of the solar cycle and of stellar evolution. Other photospheric observations will contribute to our knowledge of the solar magnetic field and surface motions. The investigation consists of coordinated efforts by several teams pursuing specific scientific objectives.read more
Citations
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Journal ArticleDOI
The Helioseismic and Magnetic Imager (HMI) Investigation for the Solar Dynamics Observatory (SDO)
Philip H. Scherrer,Jesper Schou,R. I. Bush,Alexander G. Kosovichev,R. S. Bogart,J. T. Hoeksema,Yang Liu,Thomas L. Duvall,Junwei Zhao,A. M. Title,Carolus J. Schrijver,T. D. Tarbell,Steven Tomczyk +12 more
TL;DR: The Helioseismic and Magnetic Imager (HMI) instrument and investigation as a part of the NASA Solar Dynamics Observatory (SDO) is designed to study convection-zone dynamics and the solar dynamo, the origin and evolution of sunspots, active regions, and complexes of activity, the sources and drivers of solar magnetic activity and disturbances as mentioned in this paper.
Journal ArticleDOI
Design and Ground Calibration of the Helioseismic and Magnetic Imager (HMI) Instrument on the Solar Dynamics Observatory (SDO)
Jesper Schou,Philip H. Scherrer,R. I. Bush,R. Wachter,Sebastien Couvidat,M. C. Rabello-Soares,R. S. Bogart,J. T. Hoeksema,Yang Liu,Thomas L. Duvall,D. J. Akin,B. Allard,J. W. Miles,R. Rairden,R. A. Shine,T. D. Tarbell,A. M. Title,C. J. Wolfson,D. F. Elmore,Aimee A. Norton,Aimee A. Norton,Steven Tomczyk +21 more
TL;DR: The Helioseismic and Magnetic Imager (HMI) as discussed by the authors was designed to measure the Doppler shift, intensity, and vector magnetic field at the solar photosphere using the 6173 A FeI absorption line.
Journal ArticleDOI
Coexistence of ferromagnetism and metallic conductivity in a molecule-based layered compound
Eugenio Coronado,José Ramón Galán-Mascarós,José Ramón Galán-Mascarós,Carlos J. Gómez-García,Vladimir Laukhin,Vladimir Laukhin +5 more
TL;DR: The synthesis of single crystals formed by infinite sheets of this magnetic coordination polymer interleaved with layers of conducting BEDT-TTF cations are reported, and it is shown that this molecule-based compound displays ferromagnetism and metallic conductivity.
Journal ArticleDOI
Helioseismic Studies of Differential Rotation in the Solar Envelope by the Solar Oscillations Investigation Using the Michelson Doppler Imager
Jesper Schou,H. M. Antia,Sarbani Basu,R. S. Bogart,R. I. Bush,S. M. Chitre,Joergen Christensen-Dalsgaard,M. Di Mauro,W. A. Dziembowski,Antonio Eff-Darwich,Douglas Gough,Deborah A. Haber,J. T. Hoeksema,R. Howe,S. G. Korzennik,Alexander G. Kosovichev,R. M. Larsen,R. M. Larsen,Frank P. Pijpers,Philip H. Scherrer,Takashi Sekii,Theodore D. Tarbell,Alan M. Title,Michael Thompson,Juri Toomre +24 more
TL;DR: In this article, the authors report on joint helioseismic analyses of solar rotation in the convection zone and in the outer part of the radiative core using the Michelson Doppler Imager (MDI) on the Solar and Heliospheric Observatory (SOHO) spacecraft.
Journal ArticleDOI
The Solar Cycle
TL;DR: An examination of prediction techniques for the solar cycle is examined and a closer look at cycles 23 and 24 is taken.
References
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Journal ArticleDOI
Velocity fields in the solar atmosphere. i. preliminary report
TL;DR: In this paper, velocity fields in the solar atmosphere were detected and measured by an adaptation of a technique for measuring magnetic fields (R. B. Leighton), which was used to detect and measure the velocities of the Sun during the summers of l960 and 1961.
Journal ArticleDOI
Statistical properties of solar granulation derived from the SOUP instrument on Spacelab 2
TL;DR: In this paper, computer algorithms and statistical techniques were used to identify, measure, and quantify the properties of solar granulation derived from movies collected by the Solar Optical Universal Polarimeter on Spacelab 2.
Journal ArticleDOI
The Five-Minute Oscillations on the Solar Surface
TL;DR: Basu et al. as mentioned in this paper compared theory and observation of solar eigenfrequencies to make accurate determinations of the interior sound speeds, density profile, the interior rotational speeds, the depth of the convective zone, the helium abundance and the heavy-element to hydrogen ratio in the deep convective zones, and even the radius of the sun.
Journal ArticleDOI
Rings and trumpets: three-dimensional power spectra of solar oscillations
TL;DR: In this paper, the relationship between the parameters of an elliptical approximation to the rings and the subphotospheric state was derived, and a numerical simulation was presented to indicate the presence of a flow of 100 m/s directed from the equator toward the south pole.
Journal ArticleDOI
Solar oscillations: full disk observations from the geographic South Pole
TL;DR: In this paper, the conditions at the geographic South Pole enable modes of global solar oscillations and theoretical models of the internal solar structure to be identified, and a model of the global solar structure is proposed.
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