VFISV: Very Fast Inversion of the Stokes Vector for the Helioseismic and Magnetic Imager
J. M. Borrero,Steven Tomczyk,M. Kubo,Hector Socas-Navarro,Jesper Schou,Sebastien Couvidat,R. S. Bogart +6 more
TLDR
In this paper, the authors describe the implementation and main properties of a new inversion code for the polarized radiative transfer equation (VFISV: Very Fast Inversion of the Stokes Vector).Abstract:
In this paper we describe in detail the implementation and main properties of a new inversion code for the polarized radiative transfer equation (VFISV: Very Fast Inversion of the Stokes Vector). VFISV will routinely analyze pipeline data from the Helioseismic and Magnetic Imager (HMI) on-board of the Solar Dynamics Observatory (SDO). It will provide full-disk maps (4096×4096 pixels) of the magnetic field vector on the Solar Photosphere every ten minutes. For this reason VFISV is optimized to achieve an inversion speed that will allow it to invert sixteen million pixels every ten minutes with a modest number (approx. 50) of CPUs. Here we focus on describing a number of important details, simplifications and tweaks that have allowed us to significantly speed up the inversion process. We also give details on tests performed with data from the spectropolarimeter on-board of the Hinode spacecraft.read more
Citations
More filters
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
The Helioseismic and Magnetic Imager (HMI) Vector Magnetic Field Pipeline: Overview and Performance
J. Todd Hoeksema,Yang Liu,Keiji Hayashi,Xudong Sun,Jesper Schou,Jesper Schou,Sebastien Couvidat,Aimee A. Norton,Monica G. Bobra,Rebecca Centeno,K. D. Leka,Graham Barnes,Michael Turmon +12 more
TL;DR: In this article, the Helioseismic and Magnetic Imager (HMI) active region patches (HARPs) are used to track the location and shape of magnetic regions throughout their lifetime.
Journal ArticleDOI
The Helioseismic and Magnetic Imager (HMI) Vector Magnetic Field Pipeline: SHARPs - Space-Weather HMI Active Region Patches
Monica G. Bobra,Xudong Sun,J. T. Hoeksema,M. Turmon,Y. Liu,Keiji Hayashi,Graham Barnes,K. D. Leka +7 more
TL;DR: The SHARP data series as mentioned in this paper provides maps in patches that encompass automatically tracked magnetic concentrations for their entire lifetime; map quantities include the photospheric vector magnetic field and its uncertainty, along with Doppler velocity, continuum intensity, and line-of-sight magnetic field.
Journal ArticleDOI
Evolution of magnetic field and energy in a major eruptive active region based on sdo/hmi observation
Xudong Sun,J. Todd Hoeksema,Yang Liu,Thomas Wiegelmann,Keiji Hayashi,Qingrong Chen,Julia K. Thalmann +6 more
TL;DR: In this article, the authors report the evolution of magnetic field and its energy in NOAA active region 11158 over 5 days based on a vector magnetogram series from the Helioseismic and Magnetic Imager (HMI) on board the Solar Dynamic Observatory (SDO).
Journal ArticleDOI
The Helioseismic and Magnetic Imager (HMI) Vector Magnetic Field Pipeline: SHARPs -- Space-weather HMI Active Region Patches
Monica G. Bobra,Xudong Sun,J. Todd Hoeksema,Michael Turmon,Yang Liu,Keiji Hayashi,Graham Barnes,K. D. Leka +7 more
TL;DR: The SHARP data series as mentioned in this paper provides maps in patches that encompass automatically tracked magnetic concentrations for their entire lifetime, including the photospheric vector magnetic field and its uncertainty, along with Doppler velocity, continuum intensity, and line-of-sight magnetic field.
References
More filters
Book
Neural networks for pattern recognition
TL;DR: This is the first comprehensive treatment of feed-forward neural networks from the perspective of statistical pattern recognition, and is designed as a text, with over 100 exercises, to benefit anyone involved in the fields of neural computation and pattern recognition.
Journal ArticleDOI
Numerical Recipes, The Art of Scientific Computing
Journal ArticleDOI
The Hinode(Solar-B)Mission: An Overview
Takeo Kosugi,K. Matsuzaki,Taro Sakao,Toshifumi Shimizu,Y. Sone,Sumitaka Tachikawa,Tatsuaki Hashimoto,Kenji Minesugi,Akira Ohnishi,T. Yamada,Saku Tsuneta,Hirohisa Hara,Kiyoshi Ichimoto,Yoshinori Suematsu,Masumi Shimojo,Takashi Watanabe,Shigenobu Shimada,John M. Davis,L. D. Hill,J. K. Owens,A. M. Title,J. L. Culhane,Louise K. Harra,George A. Doschek,Leon Golub +24 more
TL;DR: The Hinode satellite as discussed by the authors is the successor to the Yohkoh mission, which aims to understand how magnetic energy gets transferred from the photosphere to the upper atmosphere and results in explosive energy releases.
Journal ArticleDOI
The Solar Optical Telescope for the Hinode Mission: An Overview
Saku Tsuneta,Kiyoshi Ichimoto,Yukio Katsukawa,Shin Nagata,Masashi Otsubo,Toshifumi Shimizu,Yoshinori Suematsu,Masao Nakagiri,M. Noguchi,T. D. Tarbell,A. M. Title,R. A. Shine,W. Rosenberg,C. Hoffmann,B. Jurcevich,Gary D. Kushner,M. Levay,Bruce W. Lites,D. F. Elmore,Tadashi Matsushita,Noboru Kawaguchi,H. Saito,Izumi Mikami,L. D. Hill,J. K. Owens +24 more
TL;DR: The solar optical telescope (SOT) as discussed by the authors is a 50-cm diffraction-limited Gregorian telescope with the Stokes Spectro-Polarimeter (SP) attached to it.
Journal ArticleDOI
The Solar Optical Telescope for the Hinode Mission: An Overview
TL;DR: The Solar Optical Telescope (SOT) as mentioned in this paper is a 50 cm diffraction-limited Gregorian telescope, and includes the narrow-band (NFI) and wideband (BFI) filtergraphs.
Related Papers (5)
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
The Solar Dynamics Observatory (SDO)
The Atmospheric Imaging Assembly (AIA) on the Solar Dynamics Observatory (SDO)
James R. Lemen,Alan M. Title,David J. Akin,Paul Boerner,C. Chou,Jerry F. Drake,Dexter W. Duncan,Christopher G. Edwards,Frank M. Friedlaender,Gary F. Heyman,Neal E. Hurlburt,N. Katz,Gary D. Kushner,M. Levay,Russell W. Lindgren,D. Mathur,Edward L. McFeaters,Sarah D. Mitchell,Roger A. Rehse,Carolus J. Schrijver,L. Springer,L. Springer,Robert A. Stern,Theodore D. Tarbell,Jean-Pierre Wuelser,C. Jacob Wolfson,C. Yanari,Jay A. Bookbinder,Peter Cheimets,David Caldwell,Edward E. DeLuca,Richard Gates,Leon Golub,Sang Park,William A. Podgorski,R. I. Bush,Philip H. Scherrer,Mark A. Gummin,Peter L. Smith,Gary Auker,Paul Jerram,Peter J. Pool,Regina Soufli,David L. Windt,Sarah Beardsley,Matthew Clapp,J. Lang,Nicholas R. Waltham +47 more