Comments on "The Coronal Heating Paradox" by M.J. Aschwanden, A. Winebarger, D. Tsiklauri and H. Peter [2007, Astrophys J., 659, 1673]

Abstract

We point out the priority of our paper (Mahajan et al. 2001, Phys. Plasmas, 8, 1340) over (Aschwanden et al. 2007, Astrophys J., 659, 1673) in introducing the term "Formation and primary heating of the solar corona" working out explicit models (theory as well as simulation) for coronal structure formation and heating. On analyzing the Aschwanden et al. (2007) scenario of coronal heating process (shifted to the chromospheric heating) we stress, that for efficient loop formation, the primary upflows of plasma in chromosphere/transition region should be relatively cold and fast (as opposed to hot). It is during trapping and accumulation in closed field structures, that the flows thermalize (due to the dissipation of the short scale flow energy) leading to a bright and hot coronal structure. The formation and primary heating of a closed coronal structure (loop at the end) are simultaneous and a process like the "filling of the empty coronal loop by hot upflows" is purely speculative and totally unlikely.