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: Chapter in Book/Report/Conference proceedingChapter

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)
Title of host publicationInitial Results from the Fast Imaging Solar Spectrograph
PublisherSpringer International Publishing
Pages105-116
Number of pages12
ISBN (Electronic)9783319121239
ISBN (Print)9783319121222
DOIs
StatePublished - Jan 1 2015

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Chemistry(all)

Keywords

  • Broadening
  • Chromosphere
  • Chromospheric
  • Heating
  • Prominences
  • Quiescent
  • Quiet
  • Spectral line

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