Mapping Solar Magnetic Fields from the Photosphere to the Base of the Corona
Mapping Solar Magnetic Fields from the Photosphere to the Base of the Corona
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 II $h$ & $k$ 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 gauss, strongly correlated with the Mg II $k$ 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.
Noriyuki Narukage、Jorrit Leenaarts、Tanausu del Pino Aleman、Bart De Pontieu、Javier Trujillo Bueno、Ken Kobayashi、Yoshinori Suematsu、Hirohisa Hara、Genevieve D. Vigil、Andres Asensio Ramos、David E. McKenzie、Masaki Yoshida、Ernest Alsina Ballester、Jiri Stepan、Frederic Auchere、Mats Carlsson、Alberto Sainz Dalda、Luca Belluzzi、Masahito Kubo、Ryohko Ishikawa、Ryouhei Kano、Takenori J. Okamoto、Taro Sakao、Laurel A. Rachmeler、Toshifumi Shimizu、Amy Winebarger、Donguk Song、Christian Bethge
天文学
Noriyuki Narukage,Jorrit Leenaarts,Tanausu del Pino Aleman,Bart De Pontieu,Javier Trujillo Bueno,Ken Kobayashi,Yoshinori Suematsu,Hirohisa Hara,Genevieve D. Vigil,Andres Asensio Ramos,David E. McKenzie,Masaki Yoshida,Ernest Alsina Ballester,Jiri Stepan,Frederic Auchere,Mats Carlsson,Alberto Sainz Dalda,Luca Belluzzi,Masahito Kubo,Ryohko Ishikawa,Ryouhei Kano,Takenori J. Okamoto,Taro Sakao,Laurel A. Rachmeler,Toshifumi Shimizu,Amy Winebarger,Donguk Song,Christian Bethge.Mapping Solar Magnetic Fields from the Photosphere to the Base of the Corona[EB/OL].(2021-03-02)[2025-05-17].https://arxiv.org/abs/2103.01583.点此复制
评论