太阳轨道器上的偏振与日震成像仪
天体物理仪器与方法
2020-09-30 v1 星系天体物理
摘要
本文描述了太阳轨道器任务上的偏振与日震成像仪（SO/PHI），这是首个从日地连线之外观测太阳的磁像仪与日震学仪器。它是旨在解决顶层科学问题的关键仪器：太阳发电机如何运作并驱动太阳与日球层之间的联系？SO/PHI 还将在回答太阳轨道器的其他顶层科学问题中发挥重要作用，并具备在更广泛科学领域取得丰硕成果的潜力。SO/PHI 测量 FeI 617.3nm 谱线中的塞曼效应与多普勒频移。为此，该仪器使用可调 LiNbO_3 法布里-珀罗标准具进行窄带成像光谱偏振测量，而偏振调制由液晶可变延迟器（LCVRs）完成。该谱线及邻近连续谱在六个波长点采样，数据由 2kx2k CMOS 探测器记录。为节省宝贵的遥测带宽，原始数据在星上进行处理，包括在米尔恩-埃丁顿大气假设下反演，尽管星上也提供较简单的处理方法。SO/PHI 由两台望远镜组成：一台为全日面望远镜（FDT），在轨道所有阶段覆盖全日面；另一台为高分辨率望远镜（HRT），在最近近日点时能分辨太阳上小至 200km 的结构。由于靠近太阳产生的高热负荷，通过两台望远镜的多层镀膜入射窗口大幅降低，仅允许少于 4% 的总太阳光进入仪器，且大部分位于所选谱线附近的窄波长带内。
引用
@article{arxiv.1903.11061,
title = {The Polarimetric and Helioseismic Imager on Solar Orbiter},
author = {S. K. Solanki and J. C. del Toro Iniesta and J. Woch and A. Gandorfer and J. Hirzberger and A. Alvarez-Herrero and T. Appourchaux and V. Martínez Pillet and I. Pérez-Grande and E. Sanchis Kilders and W. Schmidt and J. M. Gómez Cama and H. Michalik and W. Deutsch and G. Fernandez-Rico and B. Grauf and L. Gizon and K. Heerlein and M. Kolleck and A. Lagg and R. Meller and R. Müller and U. Schühle and J. Staub and K. Albert and M. Alvarez Copano and U. Beckmann and J. Bischoff and D. Busse and R. Enge and S. Frahm and D. Germerott and L. Guerrero and B. Löptien and T. Meierdierks and D. Oberdorfer and I. Papagiannaki and S. Ramanath and J. Schou and S. Werner and D. Yang and A. Zerr and M. Bergmann and J. Bochmann and J. Heinrichs and S. Meyer and M. Monecke and M. -F. Müller and M. Sperling and D. Álvarez Garcí a and B. Aparicio and M. Balaguer Jiménez and L. R. Bellot Rubio and J. P. Cobos Carracosa and F. Girela and D. Hernández Expósito and M. Herranz and P. Labrousse and A. López Jiménez and D. Orozco Suárez and J. L. Ramos and J. Barandiarán and L. Bastide and C. Campuzano and M. Cebollero and B. Dávila and A. Fernández-Medina and P. García Parejo and D. Garranzo-García and H. Laguna and J. A. Martín and R. Navarro and A. Núñez Peral and M. Royo and A. Sánchez and M. Silva-López and I. Vera and J. Villanueva and J. -J. Fourmond and C. Ruiz de Galarreta and M. Bouzit and V. Hervier and J. C. Le Clec'h and N. Szwec and M. Chaigneau and V. Buttice and C. Dominguez-Tagle and A. Philippon and P. Boumier and R. Le Cocguen and G. Baranjuk and A. Bell and Th. Berkefeld and J. Baumgartner and F. Heidecke and T. Maue and E. Nakai and T. Scheiffelen and M. Sigwarth and D. Soltau and R. Volkmer and J. Blanco Rodríguez and V. Domingo and A. Ferreres Sabater and J. L. Gasent Blesa and P. Rodríguez Martínez and D. Osorno Caudel and J. Bosch and A. Casas and M. Carmona and A. Herms and D. Roma and G. Alonso and A. G\' omez-Sanjuan and J. Piqueras and I. Torralbo and B. Fiethe and Y. Guan and T. Lange and H. Michel and J. A. Bonet and S. Fahmy and D. Müller and I. Zouganelis},
journal= {arXiv preprint arXiv:1903.11061},
year = {2020}
}
备注
36 pages, 41 figures