A First Spectroscopic Measurement of the Magnetic-field Strength for an Active Region of the Solar Corona
(2020) In Astrophysical Journal Letters 898(2).- Abstract
For all involved in astronomy, the importance of monitoring and determining astrophysical magnetic-field strengths is clear. It is also a well-known fact that the corona magnetic fields play an important part in the origin of solar flares and the variations of space weather. However, after many years of solar corona studies, there is still no direct and continuous way to measure and monitor the solar magnetic-field strength. We present here a scheme that allows such a measurement, based on a careful study of an exotic class of atomic transitions, known as magnetic induced transitions, in Fe9+. In this contribution we present a first application of this methodology and determine a value of the coronal field strength using the... (More)
For all involved in astronomy, the importance of monitoring and determining astrophysical magnetic-field strengths is clear. It is also a well-known fact that the corona magnetic fields play an important part in the origin of solar flares and the variations of space weather. However, after many years of solar corona studies, there is still no direct and continuous way to measure and monitor the solar magnetic-field strength. We present here a scheme that allows such a measurement, based on a careful study of an exotic class of atomic transitions, known as magnetic induced transitions, in Fe9+. In this contribution we present a first application of this methodology and determine a value of the coronal field strength using the spectroscopic data from Hinode.
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- author
- Si, Ran LU ; Brage, Tomas LU ; Li, Wenxian LU ; Grumer, Jon LU ; Li, Meichun and Hutton, Roger LU
- organization
- publishing date
- 2020
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Astrophysical Journal Letters
- volume
- 898
- issue
- 2
- article number
- L34
- publisher
- IOP Publishing
- external identifiers
-
- scopus:85090225088
- ISSN
- 2041-8205
- DOI
- 10.3847/2041-8213/aba18c
- language
- English
- LU publication?
- yes
- id
- 8206c336-9dcc-4476-a4a1-3eabe733db2d
- date added to LUP
- 2021-01-04 13:02:02
- date last changed
- 2022-04-26 22:58:06
@article{8206c336-9dcc-4476-a4a1-3eabe733db2d, abstract = {{<p>For all involved in astronomy, the importance of monitoring and determining astrophysical magnetic-field strengths is clear. It is also a well-known fact that the corona magnetic fields play an important part in the origin of solar flares and the variations of space weather. However, after many years of solar corona studies, there is still no direct and continuous way to measure and monitor the solar magnetic-field strength. We present here a scheme that allows such a measurement, based on a careful study of an exotic class of atomic transitions, known as magnetic induced transitions, in Fe9+. In this contribution we present a first application of this methodology and determine a value of the coronal field strength using the spectroscopic data from Hinode.</p>}}, author = {{Si, Ran and Brage, Tomas and Li, Wenxian and Grumer, Jon and Li, Meichun and Hutton, Roger}}, issn = {{2041-8205}}, language = {{eng}}, number = {{2}}, publisher = {{IOP Publishing}}, series = {{Astrophysical Journal Letters}}, title = {{A First Spectroscopic Measurement of the Magnetic-field Strength for an Active Region of the Solar Corona}}, url = {{http://dx.doi.org/10.3847/2041-8213/aba18c}}, doi = {{10.3847/2041-8213/aba18c}}, volume = {{898}}, year = {{2020}}, }