Long term study of the solar filaments from the Synoptic Maps as derived from Hα Spectroheliograms of Kodaikanal Observatory (https://arxiv.org/abs/1707.05658)
Long term study of the solar filaments from the Synoptic Maps as derived from Hα Spectroheliograms of Kodaikanal Observatory (https://arxiv.org/abs/1707.05658)