Generation of solar spicules and subsequent atmospheric heating
| Autor: | Wenda Cao, Alphonse C. Sterling, Robertus Erdélyi, Dominik Utz, Tanmoy Samanta, Yajie Chen, Hui Tian, Dipankar P. K. Banerjee, Hardi Peter, Song Feng, Vasyl Yurchyshyn, Kwangsu Ahn |
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| Rok vydání: | 2018 |
| Předmět: |
Physics
Multidisciplinary Solar observatory 010504 meteorology & atmospheric sciences Astrophysics::High Energy Astrophysical Phenomena Astronomy FOS: Physical sciences Magnetic reconnection Plasma 01 natural sciences Corona Magnetic flux Solar telescope Sponge spicule Astrophysics - Solar and Stellar Astrophysics 0103 physical sciences Physics::Space Physics Astrophysics::Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics Astrophysics - Instrumentation and Methods for Astrophysics 010303 astronomy & astrophysics Chromosphere Instrumentation and Methods for Astrophysics (astro-ph.IM) Solar and Stellar Astrophysics (astro-ph.SR) 0105 earth and related environmental sciences |
| Zdroj: | Science (New York, N.Y.). 366(6467) |
| ISSN: | 1095-9203 0036-8075 |
| Popis: | Spicules are rapidly evolving fine-scale jets of magnetized plasma in the solar chromosphere. It remains unclear how these prevalent jets originate from the solar surface and what role they play in heating the solar atmosphere. Using the Goode Solar Telescope at the Big Bear Solar Observatory, we observed spicules emerging within minutes of the appearance of opposite-polarity magnetic flux around dominant-polarity magnetic field concentrations. Data from the Solar Dynamics Observatory showed subsequent heating of the adjacent corona. The dynamic interaction of magnetic fields (likely due to magnetic reconnection) in the partially ionized lower solar atmosphere appears to generate these spicules and heat the upper solar atmosphere. Comment: Published in Science, File includes the main text and supplementary materials |
| Databáze: | OpenAIRE |
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