Journal of The Korean Astronomical Society (천문학회지)

The Korean Astronomical Society (한국천문학회)
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SPATIO-SPECTRAL MAXIMUM ENTROPY METHOD: II. SOLAR MICROWAVE IMAGING SPECTROSCOPY

  • Bong, Su-Chan (Korea Astronomy and Space Science Institute) ;
  • Lee, Jeong-Woo (Physics Department, New Jersey Institute of Technology) ;
  • Gary Dale E. (Physics Department, New Jersey Institute of Technology) ;
  • Yun Hong-Sik (Astronomy Program, School of Earth and Environmental Science, Seoul National University) ;
  • Chae Jong-Chul (Astronomy Program, School of Earth and Environmental Science, Seoul National University)
  • Published : 2005.12.01
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Abstract

In a companion paper, we have presented so-called Spatio-Spectral Maximum Entropy Method (SSMEM) particularly designed for Fourier-Transform imaging over a wide spectral range. The SSMEM allows simultaneous acquisition of both spectral and spatial information and we consider it most suitable for imaging spectroscopy of solar microwave emission. In this paper, we run the SSMEM for a realistic model of solar microwave radiation and a model array resembling the Owens Valley Solar Array in order to identify and resolve possible issues in the application of the SSMEM to solar microwave imaging spectroscopy. We mainly concern ourselves with issues as to how the frequency dependent noise in the data and frequency-dependent variations of source size and background flux will affect the result of imaging spectroscopy under the SSMEM. We also test the capability of the SSMEM against other conventional techniques, CLEAN and MEM.

Keywords

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  2. Analysis of RHESSI Flares Using aRadio Astronomical Technique vol.240, pp.2, 2007, https://doi.org/10.1007/s11207-007-0263-1