利用白光和射电观测估算中层日球 corona 电子密度
太阳与恒星天体物理
2026-02-11 v1
摘要
日球电子密度是许多日物理学领域的基本参数。传统上，日球密度的常规估计仅依赖于白光观测。然而，这些通过反演白光数据获得的密度估计需要作出简化假设，可能影响测量结果的稳健性。因此，为提高日球密度测量的可靠性，极大希望探索其他互补方法。本研究利用新近部署的 Owens Valley Radio Observatory（OVRO-LWA）低频射电观测数据，估算约在 区间的日球中层电子密度。结果表明，与基于白光 coronagraph 数据和理论模型预测的结果一致。我们还推导出 区间适用的密度模型，表达式为 ，其中 ，且 为日心距离。OVRO-LWA 是一台专用于日球射电干涉仪，能够以低延迟提供科学就绪图像，非常适合生成定期且独立的日球密度估计，以补充现有白光技术。
引用
@article{arxiv.2602.09819,
title = {Estimating Electron Densities in the Middle Solar Corona using White-light and Radio Observations},
author = {Surajit Mondal and Shaheda Begum Shaik and Russell A. Howard and Peijin Zhang and Bin Chen and Xingyao Chen and Sijie Yu and Dale Gary and Marin M. Anderson and Judd D. Bowman and Ruby Byrne and Morgan Catha and Sherry Chhabra and Larry D Addario and Ivey Davis and Jayce Dowell and Gregg Hallinan and Charlie Harnach and Greg Hellbourg and Jack Hickish and Rick Hobbs and David Hodge and Mark Hodges and Yuping Huang and Andrea Isella and Daniel C. Jacobs and Ghislain Kemby and John T. Klinefelter and Matthew Kolopanis and Nikita Kosogorov and James Lamb and Casey Law and Nivedita Mahesh and Brian O Donnell and Corey Posner and Travis Powell and Vinand Prayag and Andres Rizo and Andrew Romero Wolf and Jun Shi and Greg Taylor and Jordan Trim and Mike Virgin and Akshatha Vydula and Sandy Weinreb and Scott White and David Woody and Thomas Zentmeyer},
journal= {arXiv preprint arXiv:2602.09819},
year = {2026}
}
备注
Accepted for publication in ApJ