Repeated Type III Burst Groups Associated with a B-Class Flare and a Narrow-Width CME

Silja Pohjolainen; Derek McKay; Nasrin Talebpour Sheshvan; Christian Monstein

doi:10.1007/s11207-023-02212-8

Repeated Type III Burst Groups Associated with a B-Class Flare and a Narrow-Width CME

Silja Pohjolainen^*
, Derek McKay
, Nasrin Talebpour Sheshvan
, Christian Monstein

^*Corresponding author for this work

Metsähovi Radio Observatory

University of Turku
Università della Svizzera italiana

Research output: Contribution to journal › Article › Scientific › peer-review

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Abstract

We have analysed a solar event from 27 September 2021, which included a small GOES B-class flare, a compact and narrow-width CME, and radio type III bursts that appeared in groups. The long-duration, repeated metric type III burst emission indicates continuous electron acceleration at high altitudes. The flaring active region was surrounded by strong magnetic fields and large-scale loops, which guided the outflow of the CME plasmoid and hence the narrow, bullet-like appearance of the CME. Radio imaging and EUV observations confirmed the direction of particle propagation and the depletion of matter from the solar source region. We observed V-shaped type III burst emission lanes, which also explain the field configuration and suggest a possible location for repeated reconnection that occurred at a constant altitude.

Original language	English
Article number	118
Journal	Solar Physics
Volume	298
Issue number	10
DOIs	https://doi.org/10.1007/s11207-023-02212-8
Publication status	Published - Oct 2023
MoE publication type	A1 Journal article-refereed

Funding

We thank the radio monitoring service at LESIA, Observatoire de Paris for providing value-added data that have been used for this study. We also thank the e-Callisto community for free access to their data and software. Our special thanks go to Kim Tolbert at GSFC, who prepared the Fermi/GBM response file manually for us, as the flare was not big enough for the quicklook procedure. KAIRA was funded by the University of Oulu and the FP7 European Regional Development Fund and is operated by the Sodankylä Geophysical Observatory with assistance from the University of Tromsø and volunteer effort. The CME catalog is generated and maintained at the CDAW Data Center by NASA and the Catholic University of America in cooperation with the Naval Research Laboratory. SOHO is a project of international cooperation between ESA and NASA. We thank the radio monitoring service at LESIA, Observatoire de Paris for providing value-added data that have been used for this study. We also thank the e-Callisto community for free access to their data and software. Our special thanks go to Kim Tolbert at GSFC, who prepared the Fermi /GBM response file manually for us, as the flare was not big enough for the quicklook procedure. KAIRA was funded by the University of Oulu and the FP7 European Regional Development Fund and is operated by the Sodankylä Geophysical Observatory with assistance from the University of Tromsø and volunteer effort. The CME catalog is generated and maintained at the CDAW Data Center by NASA and the Catholic University of America in cooperation with the Naval Research Laboratory. SOHO is a project of international cooperation between ESA and NASA.

Keywords

Association with flares
Corona
Coronal mass ejections
Dynamics
Flares
Initiation and propagation
Magnetic fields
Radio bursts

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10.1007/s11207-023-02212-8Licence: CC BY

Pohjolainen_Repeated_typeFinal published version, 7.3 MBLicence: CC BY

Cite this

@article{28012a339d1141e3b29c7292874ca015,

title = "Repeated Type III Burst Groups Associated with a B-Class Flare and a Narrow-Width CME",

abstract = "We have analysed a solar event from 27 September 2021, which included a small GOES B-class flare, a compact and narrow-width CME, and radio type III bursts that appeared in groups. The long-duration, repeated metric type III burst emission indicates continuous electron acceleration at high altitudes. The flaring active region was surrounded by strong magnetic fields and large-scale loops, which guided the outflow of the CME plasmoid and hence the narrow, bullet-like appearance of the CME. Radio imaging and EUV observations confirmed the direction of particle propagation and the depletion of matter from the solar source region. We observed V-shaped type III burst emission lanes, which also explain the field configuration and suggest a possible location for repeated reconnection that occurred at a constant altitude.",

keywords = "Association with flares, Corona, Coronal mass ejections, Dynamics, Flares, Initiation and propagation, Magnetic fields, Radio bursts",

author = "Silja Pohjolainen and Derek McKay and Nasrin Talebpour Sheshvan and Christian Monstein",

note = "Funding Information: We thank the radio monitoring service at LESIA, Observatoire de Paris for providing value-added data that have been used for this study. We also thank the e-Callisto community for free access to their data and software. Our special thanks go to Kim Tolbert at GSFC, who prepared the Fermi/GBM response file manually for us, as the flare was not big enough for the quicklook procedure. KAIRA was funded by the University of Oulu and the FP7 European Regional Development Fund and is operated by the Sodankyl{\"a} Geophysical Observatory with assistance from the University of Troms{\o} and volunteer effort. The CME catalog is generated and maintained at the CDAW Data Center by NASA and the Catholic University of America in cooperation with the Naval Research Laboratory. SOHO is a project of international cooperation between ESA and NASA. Funding Information: We thank the radio monitoring service at LESIA, Observatoire de Paris for providing value-added data that have been used for this study. We also thank the e-Callisto community for free access to their data and software. Our special thanks go to Kim Tolbert at GSFC, who prepared the Fermi /GBM response file manually for us, as the flare was not big enough for the quicklook procedure. KAIRA was funded by the University of Oulu and the FP7 European Regional Development Fund and is operated by the Sodankyl{\"a} Geophysical Observatory with assistance from the University of Troms{\o} and volunteer effort. The CME catalog is generated and maintained at the CDAW Data Center by NASA and the Catholic University of America in cooperation with the Naval Research Laboratory. SOHO is a project of international cooperation between ESA and NASA. Publisher Copyright: {\textcopyright} 2023, The Author(s).",

year = "2023",

month = oct,

doi = "10.1007/s11207-023-02212-8",

language = "English",

volume = "298",

journal = "Solar Physics",

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AU - Pohjolainen, Silja

AU - McKay, Derek

AU - Talebpour Sheshvan, Nasrin

AU - Monstein, Christian

N1 - Funding Information: We thank the radio monitoring service at LESIA, Observatoire de Paris for providing value-added data that have been used for this study. We also thank the e-Callisto community for free access to their data and software. Our special thanks go to Kim Tolbert at GSFC, who prepared the Fermi/GBM response file manually for us, as the flare was not big enough for the quicklook procedure. KAIRA was funded by the University of Oulu and the FP7 European Regional Development Fund and is operated by the Sodankylä Geophysical Observatory with assistance from the University of Tromsø and volunteer effort. The CME catalog is generated and maintained at the CDAW Data Center by NASA and the Catholic University of America in cooperation with the Naval Research Laboratory. SOHO is a project of international cooperation between ESA and NASA. Funding Information: We thank the radio monitoring service at LESIA, Observatoire de Paris for providing value-added data that have been used for this study. We also thank the e-Callisto community for free access to their data and software. Our special thanks go to Kim Tolbert at GSFC, who prepared the Fermi /GBM response file manually for us, as the flare was not big enough for the quicklook procedure. KAIRA was funded by the University of Oulu and the FP7 European Regional Development Fund and is operated by the Sodankylä Geophysical Observatory with assistance from the University of Tromsø and volunteer effort. The CME catalog is generated and maintained at the CDAW Data Center by NASA and the Catholic University of America in cooperation with the Naval Research Laboratory. SOHO is a project of international cooperation between ESA and NASA. Publisher Copyright: © 2023, The Author(s).

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N2 - We have analysed a solar event from 27 September 2021, which included a small GOES B-class flare, a compact and narrow-width CME, and radio type III bursts that appeared in groups. The long-duration, repeated metric type III burst emission indicates continuous electron acceleration at high altitudes. The flaring active region was surrounded by strong magnetic fields and large-scale loops, which guided the outflow of the CME plasmoid and hence the narrow, bullet-like appearance of the CME. Radio imaging and EUV observations confirmed the direction of particle propagation and the depletion of matter from the solar source region. We observed V-shaped type III burst emission lanes, which also explain the field configuration and suggest a possible location for repeated reconnection that occurred at a constant altitude.

AB - We have analysed a solar event from 27 September 2021, which included a small GOES B-class flare, a compact and narrow-width CME, and radio type III bursts that appeared in groups. The long-duration, repeated metric type III burst emission indicates continuous electron acceleration at high altitudes. The flaring active region was surrounded by strong magnetic fields and large-scale loops, which guided the outflow of the CME plasmoid and hence the narrow, bullet-like appearance of the CME. Radio imaging and EUV observations confirmed the direction of particle propagation and the depletion of matter from the solar source region. We observed V-shaped type III burst emission lanes, which also explain the field configuration and suggest a possible location for repeated reconnection that occurred at a constant altitude.

KW - Association with flares

KW - Corona

KW - Coronal mass ejections

KW - Dynamics

KW - Flares

KW - Initiation and propagation

KW - Magnetic fields

KW - Radio bursts

UR - https://www.scopus.com/pages/publications/85173704738

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DO - 10.1007/s11207-023-02212-8

M3 - Article

AN - SCOPUS:85173704738

SN - 0038-0938

VL - 298

JO - Solar Physics

JF - Solar Physics

IS - 10

M1 - 118

ER -

Repeated Type III Burst Groups Associated with a B-Class Flare and a Narrow-Width CME

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Metsähovi Radio Observatory

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Repeated Type III Burst Groups Associated with a B-Class Flare and a Narrow-Width CME

Abstract

Funding

Keywords

Access to Document

Other files and links

Fingerprint

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Metsähovi Radio Observatory

Cite this