Comparative Analysis of Type III Radio Bursts and Solar Flares: Spatial Localization and Correlation with Solar Flare Intensity

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Krupar_2024_ApJ_961_88.pdf (1.04 MB)

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https://iopscience.iop.org/article/10.3847/1538-4357/ad12ba

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https://doi.org/10.3847/1538-4357/ad12ba
 http://hdl.handle.net/11603/31567

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UMBC Goddard Planetary Heliophysics Institute (GPHI)
UMBC Faculty Collection

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Author/Creator ORCID

https://orcid.org/0000-0001-6185-3945
 https://orcid.org/0000-0002-1122-6422

Date

2024-01-17

Type of Work

journal articles
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Citation of Original Publication

Krupar, Vratislav, Oksana Kruparova, Adam Szabo, Frantisek Nemec, Milan Maksimovic, Juan Carlos Martinez Oliveros, David Lario, et al. “Comparative Analysis of Type III Radio Bursts and Solar Flares: Spatial Localization and Correlation with Solar Flare Intensity.” The Astrophysical Journal 961, no. 1 (January 2024): 88. https://doi.org/10.3847/1538-4357/ad12ba.

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This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
PDM 1.0 DEED Public Domain Mark 1.0 Universal

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Abstract

We present a comprehensive study of type III radio bursts and their association with solar flares of magnitude M1.0 and larger, as observed by four widely separated spacecraft (Parker Solar Probe, Solar Orbiter, STEREO-A, and Wind). Our main focus is the introduction and validation of two methods for localizing radio bursts using the available multispacecraft data. The first method utilizes intensity fitting with a circular Gaussian distribution, while the second method is based on the time arrival of radio bursts. We demonstrate the effectiveness of these methods through the analysis of a single type III burst event and compare their results with the traditional radio triangulation technique. Furthermore, we conduct a statistical study of 17 type III bursts associated with M- and X-class solar flares in years 2020–2022. Our findings suggest a possible correlation between solar flare intensities and longitudes, with east limb flares tending to be weaker than west limb flares. We also observe a systematic drift of radio burst longitudes toward the east, potentially explained by a poleward component of the local density gradient. Our results suggest a strong correlation between solar flare intensities and radio burst properties, enhancing our understanding of the relationship between solar flares and type III radio bursts.