Temperature of Solar Prominences Obtained with the Fast Imaging Solar Spectrograph on the 1.6 m New Solar Telescope at the Big Bear Solar Observatory

Hyungmin Park, Jongchul Chae, Donguk Song, Ram Ajor Maurya, Heesu Yang, Young Deuk Park, Bi Ho Jang, Jakyoung Nah, Kyung Suk Cho, Yeon Han Kim, Kwangsu Ahn, Wenda Cao, Philip R. Goode

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

We observed solar prominences with the Fast Imaging Solar Spectrograph (FISS) at the Big Bear Solar Observatory on 30 June 2010 and 15 August 2011. To determine the temperature of the prominence material, we applied a nonlinear least-squares fitting of the radiative transfer model. From the Doppler broadening of the Hα and Ca ii lines, we determined the temperature and nonthermal velocity separately. The ranges of temperature and nonthermal velocity were 4000 - 20 000 K and 4 - 11 km s-1. We also found that the temperature varied much from point to point within one prominence.

Original languageEnglish (US)
Pages (from-to)105-116
Number of pages12
JournalSolar Physics
Volume288
Issue number1
DOIs
StatePublished - Nov 2013

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Keywords

  • Chromosphere, quiet
  • Heating, chromospheric
  • Prominences, quiescent
  • Spectral line, broadening

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