期刊
ASTROPHYSICAL JOURNAL LETTERS
卷 862, 期 2, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.3847/2041-8213/aad4fc
关键词
magnetohydrodynamics (MHD); magnetic reconnection; Sun: atmosphere; Sun: chromosphere; Sun: corona; Sun: magnetic fields
资金
- European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant [707837]
- Max Planck Foundation
- Strategic Innovations Fund of the President of the Max Planck Society (MPG)
- DLR
- Ministerio de Economia y Competitividad [ESP2013-47349-C6, ESP2014-56169-C6]
- NASA [NNX13AE95G]
- Marie Curie Actions (MSCA) [707837] Funding Source: Marie Curie Actions (MSCA)
Nanoflare models for heating the solar corona usually assume magnetic braiding and reconnection as the source of the energy. However, recent observations at record spatial resolution from the SUNRISE balloon mission suggest that photospheric magnetic flux cancellation is much more common than previously realized. We therefore examine the possibility of three-dimensional reconnection driven by flux cancellation as a cause of chromospheric and coronal heating. In particular, we estimate how the heights and amount of energy release produced by flux cancellation depend on flux size, flux cancellation speed, and overlying field strength.
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