تقرير
Implications of the abundance of halo coronal mass ejections for the strength of solar cycle 25
| العنوان: | Implications of the abundance of halo coronal mass ejections for the strength of solar cycle 25 |
|---|---|
| المؤلفون: | Gopalswamy, Nat, Michalek, Grzegorz, Yashiro, Seiji, Makela, Pertti, Akiyama, Sachiko, Xie, Hong |
| سنة النشر: | 2024 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - Solar and Stellar Astrophysics |
| الوصف: | We assess the relative strength of solar cycle (SC) 25 with respect to SCs 23 and 24 based on the abundance of halo coronal mass ejections (CMEs). We make use of the halo CME database (https://cdaw.gsfc.nasa.gov/CME_list/halo/halo.html) to compare the halo CME abundance during the first four years in each of SCs 23 to 25. The main result is that in several aspects such as the abundance, occurrence rate, source locations, and halo heights, halo CMEs are similar between SCs 24 and 25 but different from SC 23. This result follows from the fact that weaker cycles have low heliospheric total pressure, whose backreaction on CMEs allows them to expand more and hence enhancing the chance of becoming a halo. The solar cycle variation of halo CME properties is consistent with the precursor-based cycle prediction methods that indicate SC 25 is similar to or only slightly stronger than SC 24. Comment: 6 pages, 4 figures, 1 table, Proceedings of IAU Symposium 388 |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2407.04548 |
| رقم الأكسشن: | edsarx.2407.04548 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |