A Near-half-century Simulation of the Solar Corona
We present an overview of results from a magnetofrictional model of the entire solar corona over a period of 47 yr. The simulation self-consistently reproduces decades of solar phenomena, varying in duration between rapid eruptions and the long-term solar cycles, from an input of observed active reg...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2024-01-01
|
| Series: | The Astrophysical Journal Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/2041-8213/ad1934 |
| _version_ | 1797357498539180032 |
|---|---|
| author | Valentin Aslanyan Karen A. Meyer Roger B. Scott Anthony R. Yeates |
| author_facet | Valentin Aslanyan Karen A. Meyer Roger B. Scott Anthony R. Yeates |
| author_sort | Valentin Aslanyan |
| collection | DOAJ |
| description | We present an overview of results from a magnetofrictional model of the entire solar corona over a period of 47 yr. The simulation self-consistently reproduces decades of solar phenomena, varying in duration between rapid eruptions and the long-term solar cycles, from an input of observed active regions emerging at the photosphere. We have developed a geometric approach to use magnetic helicity to identify and localize the frequent eruptions that occur in the simulation. This method allows us to match our results to extreme-ultraviolet observations of transient events. We have analyzed the evolving magnetic topology by computing the squashing factor and segmenting the corona into discrete magnetic domains bounded by the Separatrix-Web. The simulations show a more dynamic structure to the Separatrix-Web than is predicted by potential field models, which may explain solar wind observations. |
| first_indexed | 2024-03-08T14:46:01Z |
| format | Article |
| id | doaj.art-72001ce2a07d48008218846dcf986219 |
| institution | Directory Open Access Journal |
| issn | 2041-8205 |
| language | English |
| last_indexed | 2024-03-08T14:46:01Z |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal Letters |
| spelling | doaj.art-72001ce2a07d48008218846dcf9862192024-01-11T09:23:56ZengIOP PublishingThe Astrophysical Journal Letters2041-82052024-01-019611L310.3847/2041-8213/ad1934A Near-half-century Simulation of the Solar CoronaValentin Aslanyan0https://orcid.org/0000-0003-3704-4229Karen A. Meyer1https://orcid.org/0000-0001-6046-2811Roger B. Scott2https://orcid.org/0000-0001-8517-4920Anthony R. Yeates3https://orcid.org/0000-0002-2728-4053Division of Mathematics, School of Science and Engineering, University of Dundee , Dundee, DD1 4HN, UK ; vaslanyan001@dundee.ac.ukDivision of Mathematics, School of Science and Engineering, University of Dundee , Dundee, DD1 4HN, UK ; vaslanyan001@dundee.ac.ukUS Naval Research Laboratory , Washington, DC 20375, USADepartment of Mathematical Sciences, Durham University , Durham, DH1 3LE, UKWe present an overview of results from a magnetofrictional model of the entire solar corona over a period of 47 yr. The simulation self-consistently reproduces decades of solar phenomena, varying in duration between rapid eruptions and the long-term solar cycles, from an input of observed active regions emerging at the photosphere. We have developed a geometric approach to use magnetic helicity to identify and localize the frequent eruptions that occur in the simulation. This method allows us to match our results to extreme-ultraviolet observations of transient events. We have analyzed the evolving magnetic topology by computing the squashing factor and segmenting the corona into discrete magnetic domains bounded by the Separatrix-Web. The simulations show a more dynamic structure to the Separatrix-Web than is predicted by potential field models, which may explain solar wind observations.https://doi.org/10.3847/2041-8213/ad1934Solar physicsSolar coronaSolar prominencesSolar coronal mass ejectionsSolar cycle |
| spellingShingle | Valentin Aslanyan Karen A. Meyer Roger B. Scott Anthony R. Yeates A Near-half-century Simulation of the Solar Corona The Astrophysical Journal Letters Solar physics Solar corona Solar prominences Solar coronal mass ejections Solar cycle |
| title | A Near-half-century Simulation of the Solar Corona |
| title_full | A Near-half-century Simulation of the Solar Corona |
| title_fullStr | A Near-half-century Simulation of the Solar Corona |
| title_full_unstemmed | A Near-half-century Simulation of the Solar Corona |
| title_short | A Near-half-century Simulation of the Solar Corona |
| title_sort | near half century simulation of the solar corona |
| topic | Solar physics Solar corona Solar prominences Solar coronal mass ejections Solar cycle |
| url | https://doi.org/10.3847/2041-8213/ad1934 |
| work_keys_str_mv | AT valentinaslanyan anearhalfcenturysimulationofthesolarcorona AT karenameyer anearhalfcenturysimulationofthesolarcorona AT rogerbscott anearhalfcenturysimulationofthesolarcorona AT anthonyryeates anearhalfcenturysimulationofthesolarcorona AT valentinaslanyan nearhalfcenturysimulationofthesolarcorona AT karenameyer nearhalfcenturysimulationofthesolarcorona AT rogerbscott nearhalfcenturysimulationofthesolarcorona AT anthonyryeates nearhalfcenturysimulationofthesolarcorona |