New solar telescope observations of magnetic reconnection occurring in the chromosphere of the quiet sun

Jongchul Chae, P. R. Goode, Kwangsu Ahn, Vasyl Yurchyshyn, V. Abramenko, A. Andic, Wenda Cao, Y. D. Park

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Magnetic reconnection is a process in which field-line connectivity changes in a magnetized plasma. On the solar surface, it often occurs with the cancellation of two magnetic fragments of opposite polarity. Using the 1.6 m New Solar Telescope, we observed the morphology and dynamics of plasma visible in the Hα line, which is associated with a canceling magnetic feature (CMF) in the quiet Sun. The region can be divided into four magnetic domains: two pre-reconnection and two post-reconnection. In one post-reconnection domain, a small cloud erupted, with a plane-of-sky speed of 10 km s-1, while in the other one, brightening began at points and then tiny bright loops appeared and subsequently shrank. These features support the notion that magnetic reconnection taking place in the chromosphere is responsible for CMFs.

Original languageEnglish (US)
Pages (from-to)L6-L10
JournalAstrophysical Journal Letters
Volume713
Issue number1 PART 2
DOIs
StatePublished - 2010

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Keywords

  • Magnetic reconnection
  • Magnetohydrodynamics (MHD)
  • Sun: chromosphere
  • Sun: magnetic topology
  • Sun: photosphere

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