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Flux Erosion of Magnetic Clouds by Reconnection With the Sun's Open Flux

Nandy, Dibyendu; Pal, Sanchita; Dash, Soumyaranjan

Magnetic clouds (MCs) are flux rope magnetic structures forming a subset of solar coronal mass ejections, which have significant space weather impacts. The geoeffectiveness of MCs depends on their properties, which evolve during their interplanetary passage. Based on an analysis of observations spanning two solar cycles, we establish that MCs inte…

Low-Frequency Radio Observations of the "Quiet" Corona During the Descending Phase of Sunspot Cycle 24

Ramesh, R.; Kumari, A.; Kathiravan, C. +3 more

We carried out a statistical study of the "quiet" solar corona during the descending phase of the Sunspot Cycle 24 (i.e., January 2015 to May 2019) using data obtained with the Gauribidanur RAdioheliograPH (GRAPH) at 53 and 80 MHz simultaneously. Our results show that the equatorial (east-west) diameters of the solar corona at the above two freque…