Fine structures of a solar type III radio bursts observed with LOFAR

• Autorzy: Dąbrowski Bartosz , Wołowska Aleksandra , Vocks Christian , Magdalenić Jasmina , Zhang Peijin , Flisek Pawel , Brose Malte , Morosan Diana E. , Krankowski Andrzej , Fron Adam , Mann Gottfried , Zucca Pietro , Bisi Mario , Fallows Richard , Gallagher Peter , Marque Christophe , Matyjasiak Barbara , Rothkaehl Hanna

Identyfikatory

DOI

10.1007/s11600-024-01421-4

• Języki publikacji: EN

Abstrakty

EN

We present spectral and imaging LOFAR (LOw-Frequency ARray) observations in the 20 - 40 MHz range of solar radio bursts fine structures, such as flag-like, sail-like, and dot-like that appeared on 8 April 2019. These structures were associated with type III solar radio bursts that occurred in the 40 - 80 MHz band. The mean duration and spectral widths of the fine structures range from 1.0 to 3.4 s and from 0.3 to 0.9 MHz, respectively. Additionally, we investigated the radio images of eight fine structures - two flags, two sails and four dots. This allowed us to determine their emission source sizes, which ranged from 240 to 392 arcmin2 , and their frequencies from 25.58 to 39.25 MHz as well as their location. They occurred on the east side of the Sun and were most likely associated with an emerging active region NOAA AR 12738, where a weak B1.7 flare was observed.

Słowa kluczowe

EN

sun; radio; bursts; corona; LOFAR; fine structure

PL

słońce; radio; wybuchy; korona; LOFAR; drobna struktura

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2025
• Tom: Vol. 73, no. 1
• Strony: 987--993
• Opis fizyczny: Bibliogr. 30 poz.

Twórcy

autor

Dąbrowski Bartosz

• Space Radio-Diagnostics Research Centre, University of Warmia and Mazury, R. Prawochenskiego 9, 10-719 Olsztyn, Poland

• https://orcid.org/0000-0002-4705-7798

autor

Wołowska Aleksandra

• Space Radio-Diagnostics Research Centre, University of Warmia and Mazury, R. Prawochenskiego 9, 10-719 Olsztyn, Poland

autor

Vocks Christian

• Leibniz-Institut fur Astrophysik Potsdam, An der Sternwarte 16, D-14482 Potsdam, Germany

autor

Magdalenić Jasmina

• Center for mathematical Plasma Astrophysics, KU Leuven, 3001 Leuven, Belgium
• Royal Observatory of Belgium, 1180 Ukkel, Brussels, Belgium

autor

Zhang Peijin

• Center for Solar-Terrestrial Research, New Jersey Institute of Technology, Newark, NJ, USA
• Cooperative Programs for the Advancement of Earth System Science, University Corporation for Atmospheric Research, Boulder, CO, USA

autor

Flisek Pawel

• Space Radio-Diagnostics Research Centre, University of Warmia and Mazury, R. Prawochenskiego 9, 10-719 Olsztyn, Poland

autor

Brose Malte

• Leibniz-Institut fur Astrophysik Potsdam, An der Sternwarte 16, D-14482 Potsdam, Germany
• Zentrum fur Astronomie und Astrophysik, Technische Universitat Berlin, HardenbergstraBe 36, 10623 Berlin, Germany

autor

Morosan Diana E.

• Department of Physics and Astronomy, University of Turku, 20014 Turku, Finland

autor

Krankowski Andrzej

• Space Radio-Diagnostics Research Centre, University of Warmia and Mazury, R. Prawochenskiego 9, 10-719 Olsztyn, Poland

autor

Fron Adam

autor

Mann Gottfried

• Leibniz-Institut fur Astrophysik Potsdam, An der Sternwarte 16, D-14482 Potsdam, Germany

autor

Zucca Pietro

• ASTRON - The Netherlands Institute for Radio Astronomy, Oude Hoogeveensedijk 4, 7991 PD Dwingeloo, The Netherlands

autor

Bisi Mario

autor

Fallows Richard

• RAL Space, United Kingdom Research and Innovation - Science and Technology Facilities Council, Rutherford Appleton Laboratory, Harwell Campus, Oxfordshire OX11 0QX, UK

autor

Gallagher Peter

• School of Cosmic Physics, Dublin Institute for Advanced Studies, 31 Fitzwilliam Place, Dublin 2 D02 PN40, Ireland

autor

Marque Christophe

• Royal Observatory of Belgium, 1180 Ukkel, Brussels, Belgium

autor

Matyjasiak Barbara

• Space Research Center of the Polish Academy of Sciences, Bartycka 18a, 00-716 Warsaw, Poland

autor

Rothkaehl Hanna

• Space Research Center of the Polish Academy of Sciences, Bartycka 18a, 00-716 Warsaw, Poland

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Uwagi

Korekta artykułu w Acta Geophysica Vol. 73, no. 1/2025. Nr DOI korekty: 10.1007/s11600-024-01461-w

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025).