Study of solar activities associated with a Halo CME on 17 Feb 2023 event

IF 1.9 4区物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS

New Astronomy Pub Date : 2024-09-24 DOI:10.1016/j.newast.2024.102312

A Ansar Ahamed , S Prasanna Subramanian , A Mujiber Rahman , A Kubera Raja , K Mahalakshmi , TK Thirumalaisamy

引用次数: 0

Abstract

In the present work, propagation of an earth directed fast and wide Coronal Mass Ejection event on 17 February 2023 is studied in detail. The complex magnetic configuration in the Active Region (AR) 13229 at N25E64 caused an intensive X2.3 flare with a peak at 19:38 UT. It is followed by a massive halo CME event observed in the LASCO C3 coronagraph with a linear speed of 930 km/s and shock speed of 1300 km/s. A low frequency Type II emission was detected in the frequency range 10 MHz – 180 kHz during 20:30 UT-04:45 UT on 18 Feb 2023 by space borne Wind/WAVES instrument. From the OMNI data, the IP shock and the ICME reached earth's magnetosphere on 20 Feb 2023. A fast forward type shock was observed using OMNI high resolution data. The IP shock and ICME affected the Galactic Cosmic ray (GCR) detection. This event caused large magnetic turbulences in sheath region caused a major geomagnetic storm (∼-100 nT).

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与 2023 年 2 月 17 日晕 CME 事件相关的太阳活动研究

在本研究中，详细研究了2023年2月17日发生的面向地球的快速、大范围日冕物质抛射事件的传播。位于N25E64的13229活动区（AR）中复杂的磁场构造引发了一次强烈的X2.3耀斑，峰值出现在世界标准时间19:38。随后，LASCO C3日冕仪观测到了大质量晕状 CME 事件，线速度为 930 公里/秒，冲击速度为 1300 公里/秒。美国东部时间2023年2月18日20:30-04:45期间，Wind/WAVES空间仪器探测到频率范围在10兆赫-180千赫的低频II型发射。根据 OMNI 数据，IP 冲击和 ICME 于 2023 年 2 月 20 日到达地球磁层。利用 OMNI 高分辨率数据观测到了快速前进型冲击。IP 冲击和 ICME 影响了银河宇宙射线（GCR）探测。这一事件在鞘区引起了巨大的磁湍流，导致了一场大地磁风暴（∼-100 nT）。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

New Astronomy 地学天文-天文与天体物理

CiteScore

4.00

自引率

10.00%

发文量

109

审稿时长

13.6 weeks

期刊介绍： New Astronomy publishes articles in all fields of astronomy and astrophysics, with a particular focus on computational astronomy: mathematical and astronomy techniques and methodology, simulations, modelling and numerical results and computational techniques in instrumentation. New Astronomy includes full length research articles and review articles. The journal covers solar, stellar, galactic and extragalactic astronomy and astrophysics. It reports on original research in all wavelength bands, ranging from radio to gamma-ray.