Karthikeyan, B; Shanmugapriya, G; Rajamanickam, N; Bagare, S. P
(Elsevier B.V, 2020-07)
A high-resolution sunspot umbra spectrum recorded in National Solar Observatory, Kitt Peak in the visible and infrared wave number range 13, 600 – 25, 000cm−1 was taken in the present study for identifying the rotational ...