Mapping solar magnetic fields from the photosphere to the base of the corona
Ryohko Ishikawa,Javier Trujillo Bueno,Javier Trujillo Bueno,Tanausú del Pino Alemán,Tanausú del Pino Alemán,Takenori J. Okamoto,David E. McKenzie,Frédéric Auchère,Ryouhei Kano,Donguk Song,Masaki Yoshida,Laurel A. Rachmeler,Ken Kobayashi,Hirohisa Hara,Masahito Kubo,Noriyuki Narukage,Taro Sakao,Toshifumi Shimizu,Yoshinori Suematsu,Christian Bethge,Bart De Pontieu,Alberto Sainz Dalda,Genevieve D. Vigil,Genevieve D. Vigil,Amy R. Winebarger,Ernest Alsina Ballester,Luca Belluzzi,Jiří Štěpán,Andrés Asensio Ramos,Andrés Asensio Ramos,Mats Carlsson,Jorrit Leenaarts +31 more
TLDR
In this article, the longitudinal magnetic field from the photosphere to the very upper chromosphere was inferred from spectropolarimetric observations of an active region plage and its surrounding enhanced network, showing circular polarization in ultraviolet and visible lines.Abstract:
Routine ultraviolet imaging of the Sun’s upper atmosphere shows the spectacular manifestation of solar activity; yet, we remain blind to its main driver, the magnetic field. Here, we report unprecedented spectropolarimetric observations of an active region plage and its surrounding enhanced network, showing circular polarization in ultraviolet (Mg iih & k and Mn i) and visible (Fe i) lines. We infer the longitudinal magnetic field from the photosphere to the very upper chromosphere. At the top of the plage chromosphere, the field strengths reach more than 300 G, strongly correlated with the Mg iik line core intensity and the electron pressure. This unique mapping shows how the magnetic field couples the different atmospheric layers and reveals the magnetic origin of the heating in the plage chromosphere.read more
Citations
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Measuring the magnetic origins of solar flares, CMEs and Space Weather
Philip G. Judge,Matthias Rempel,Rana Ezzeddine,Lucia Kleint,Ricky Egeland,Svetlana V. Berdyugina,Thomas E. Berger,Joan Burkepile,Rebecca Centeno,Giuliana de Toma,Mausumi Dikpati,Yuhong Fan,Holly Gilbert,D. Lacatus +13 more
TL;DR: In this article, the authors identify a region in the near UV part of the spectrum as optimal for studying the development of magnetic free energy over active regions using data from SORCE, Hubble Space Telescope, and SKYLAB, along with 1D computations of the near-UV (NUV) spectrum and numerical experiments based on the MURaM radiation-MHD and HanleRT radiative transfer codes.
Journal ArticleDOI
Measurements of Photospheric and Chromospheric Magnetic Field Structures Associated with Chromospheric Heating over a Solar Plage Region
Tetsu Anan,Thomas A. Schad,Reizaburo Kitai,Gabriel I. Dima,Sarah A. Jaeggli,Lucas A. Tarr,Manuel Collados,Carlos Dominguez-Tagle,Lucia Kleint +8 more
TL;DR: In this paper, the authors observed a plage region with the He I 1083.0 nm and Si I 1082.7 nm lines on 2018 October 3 using the integral field unit mode of the GREGOR Infrared Spectrograph (GRIS) installed at the GreGOR telescope.
Journal ArticleDOI
Quiet-Sun Mg ii h and k Line Profiles Derived from IRIS Full-Sun Mosaics. I. Reference Profiles and Center-to-limb Variation
Journal ArticleDOI
Modeling the scattering polarization of the solar Ca i 4227 {\AA} line with angle-dependent partial frequency redistribution
Gioele Janett,Ernest Alsina Ballester,Nuno Guerreiro,Simone Riva,Luca Belluzzi,Tanausú del Pino Alemán,Javier Trujillo Bueno +6 more
TL;DR: In this article, the impact and the range of validity of the angle-averaged AA approximation with respect to the general angle-dependent (AD) treatment of PRD effects in the modeling of scattering polarization in strong resonance lines, with focus on the solar Ca i 4227 {\AA} line.
Journal ArticleDOI
Magnetic Connections across the Chromosphere-Corona Transition Region
TL;DR: In this paper, the magnetic structure of the transition region (TR) plasma has been studied based on the implications of CLASP2 data of an active region recently published by Ishikawa et al., and earlier IRIS and SDO data of quiet regions.
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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.
Related Papers (5)
Mapping Solar Magnetic Fields from the Photosphere to the Base of the Corona
Ryohko Ishikawa,Javier Trujillo Bueno,Tanausú del Pino Alemán,Takenori J. Okamoto,David E. McKenzie,Frédéric Auchère,Ryouhei Kano,Donguk Song,Masaki Yoshida,Laurel A. Rachmeler,Ken Kobayashi,Hirohisa Hara,Masahito Kubo,Noriyuki Narukage,Taro Sakao,Toshifumi Shimizu,Yoshinori Suematsu,Christian Bethge,Bart De Pontieu,Alberto Sainz Dalda,Genevieve D. Vigil,Amy R. Winebarger,Ernest Alsina Ballester,Luca Belluzzi,Jiri Stepan,Andrés Asensio Ramos,Mats Carlsson,Jorrit Leenaarts +27 more