NLFFF calculations of the solar coronal magnetic field based on Hinode observations
JAXA Supercomputer System Annual Report February 2021-January 2022
Report Number: R21EU0912
Subject Category: Space and Astronautical Science
- Responsible Representative: Yoshifumi Saito, Institute of Space and Astronautical Science, Department of Solar System Sciences
- Contact Information: Toshifumi Shimizu(shimizu.toshifumi@jaxa.jp)
- Members: Yusuke Kawabata, Toshifumi Shimizu, Takahiro Hasegawa
Abstract
Our study focuses on understanding of the mechanism responsible for the occurrence of the solar flares. We derive 3D magnetic field structure in the corona by performing a 3D magnetohydrodynamics simulation using vector magnetic field maps mainly acquired with the Hinode spacecraft. We investigate 3D magnetic field structure formed in the solar atmosphere responsible for the occurrence of solar flares.
Reference URL
Please refer to 'ひのでプロジェクトのホームページ:TOP PAGE'.
Reasons and benefits of using JAXA Supercomputer System
We perform 3D magnetohydrodynamics numerical simulations by using vector magnetic field data acquired with the Hinode spacecraft in order to derive 3D magnetic field structures in the solar corona. We need large computational resource in order to perform three-dimensional magnetohydrodynamics simulations.
Achievements of the Year
We did not use the supercomputer extensively because we spent most of the time on the examination of the data already processed with the computer last year.
Publications
- Peer-reviewed papers
Hasegawa, T., Shimizu, T., Temporal Behaviors of Magnetic Helicity Injections by Self and Mutual Sunspot Rotations, The Astrophysical Journal, under review
Usage of JSS
Computational Information
- Process Parallelization Methods: MPI
- Thread Parallelization Methods: N/A
- Number of Processes: 1 - 144
- Elapsed Time per Case: 3 Minute(s)
JSS3 Resources Used
Fraction of Usage in Total Resources*1(%): 0.00
Details
Please refer to System Configuration of JSS3 for the system configuration and major specifications of JSS3.
| System Name | CPU Resources Used(Core x Hours) | Fraction of Usage*2(%) |
|---|---|---|
| TOKI-SORA | 61179.64 | 0.00 |
| TOKI-ST | 0.00 | 0.00 |
| TOKI-GP | 0.00 | 0.00 |
| TOKI-XM | 0.00 | 0.00 |
| TOKI-LM | 0.00 | 0.00 |
| TOKI-TST | 3272.20 | 0.07 |
| TOKI-TGP | 0.00 | 0.00 |
| TOKI-TLM | 0.00 | 0.00 |
| File System Name | Storage Assigned(GiB) | Fraction of Usage*2(%) |
|---|---|---|
| /home | 20.29 | 0.02 |
| /data and /data2 | 200.84 | 0.00 |
| /ssd | 200.00 | 0.05 |
| Archiver Name | Storage Used(TiB) | Fraction of Usage*2(%) |
|---|---|---|
| J-SPACE | 0.00 | 0.00 |
*1: Fraction of Usage in Total Resources: Weighted average of three resource types (Computing, File System, and Archiver).
*2: Fraction of Usage：Percentage of usage relative to each resource used in one year.
ISV Software Licenses Used
| ISV Software Licenses Used(Hours) | Fraction of Usage*2(%) | |
|---|---|---|
| ISV Software Licenses(Total) | 0.00 | 0.00 |
*2: Fraction of Usage：Percentage of usage relative to each resource used in one year.
JAXA Supercomputer System Annual Report February 2021-January 2022