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Type IV Radio Bursts and Associated Active Regions in the Sunspot Cycle 24  

Anshu Kumari   Submitted: 2022-05-06 01:41

In this article, the association of solar radio type IV bursts with active region location on the Sun is studied for the solar cycle 24. The active regions associated with moving and stationary type IV bursts are categorised as close to disk center and far from disk center regions based on their location on the solar surface (i.e, ≤ 45° or ≥ 45°, respectively). The location of the active regions associated with type IV bursts accompanied with coronal mass ejections (CMEs) are also studied. We found that ≈ 30-40 % of the active regions are located far from disk center for all the bursts. It is found that most of the active regions associated with stationary type IV bursts are close to disk center (≈ 60-70 %). The active regions associated with moving type IV bursts are more evenly distributed across the surface, i.e ≈ 56 % and ≈ 44 %, close to disk center and far from disk center regions, respectively. Most of the burst having active region close to disk center indicate that these bursts can be used to obtain physical properties such as electron density and magnetic fields of the coronal mass ejections responsible for geomagnetic storms.

Authors: Anshu Kumari
Projects: None

Publication Status: Accepted for Publication
Last Modified: 2022-05-07 16:32
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Type IV Radio Bursts and Associated Active Regions in the Sunspot Cycle 24

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