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On 8 November 2013 a halo-type coronal mass ejection (CME) was observed, together with flares and type II radio bursts, but the association between the flares, radio bursts, and the CME was not clear. Our aim is to identify the origin of…

太阳与恒星天体物理 · 物理学 2023-10-10 Silja Pohjolainen , Nasrin Talebpour Sheshvan , Christian Monstein

This study characterises a series of type~II radio bursts associated with a CME that occurred on 14 May, focusing on the coronal conditions during the event and identifying the likely location of the shocks where the radio bursts are…

太阳与恒星天体物理 · 物理学 2026-04-01 Mohamed Nedal , Catherine Cuddy , David M. Long , Shilpi Bhunia , Pietro Zucca , Peter T. Gallagher

An outstanding problem in heliospheric physics is understanding the acceleration of solar energetic particles (SEP) in coronal mass ejections (CMEs) and flares. A fundamental question is whether the acceleration occurs in interplanetary…

太阳与恒星天体物理 · 物理学 2019-10-09 Kamen Kozarev , Maher A. Dayeh , Ashraf Farahat

We preform hybrid simulations of super Alfvenic quasi-parallel shock, driven by a Coronal Mass Ejection (CME), propagating in the Outer Coronal or Solar Wind at distances of between 3 to 6 solar radii. The hybrid treatment of the problem…

太阳与恒星天体物理 · 物理学 2015-06-22 L. Gargate , R. A. Fonseca , L. O. Silva , R. A. Bamford , R. Bingham

Solar energetic particles (SEPs) are produced in two fundamental ways: at magnetic reconnection sites in solar jets and at collisionless shock waves driven by fast coronal mass ejections (CMEs). "Impulsive" SEP events, on open field lines…

太阳与恒星天体物理 · 物理学 2026-02-24 Donald V Reames

In this article, we present the multi-viewpoint and multi-wavelength analysis of an atypical solar jet based on the data from Solar Dynamics Observatory, SOlar, and Heliospheric Observatory, and Solar TErrestrial RElations Observatory. It…

太阳与恒星天体物理 · 物理学 2020-10-07 Reetika Joshi , Yuming Wang , Ramesh Chandra , Quanhao Zhang , Lijuan Liu , Xiaolei Li

The acceleration of protons and electrons to high (sometimes GeV/nucleon) energies by solar phenomena is a key component of space weather. These solar energetic particle (SEP) events can damage spacecraft and communications, as well as…

Solar eruptions, known as Coronal Mass Ejections (CMEs), are frequently observed on our Sun. Recent Kepler observations of superflares on G-type stars have implied that so called super-CMEs, possessing kinetic energies 10 times of the most…

太阳与恒星天体物理 · 物理学 2014-10-29 Vladimir S. Airapetian , Alex Glocer , William Danchi

Metre wavelength type II solar radio bursts are believed to be the signatures of shock-accelerated electrons in the corona. Studying these bursts can give information about the initial kinematics, dynamics and energetics of CMEs in the…

太阳与恒星天体物理 · 物理学 2023-07-12 Anshu Kumari , Diana E. Morosan , E. K. J. Kilpua , F. Daei

In this article, we present the relationship between prominence eruptions (PEs) and coronal mass ejections (CMEs) from May 2010 to December 2019 covering most of solar cycle 24. We used data from the Atmospheric Imaging Assembly (AIA) for…

太阳与恒星天体物理 · 物理学 2025-06-02 Pooja Devi , Nat Gopalswamy , Seiji Yashiro , Sachiko Akiyama , Ramesh Chandra , Kostadinka Koleva

In this paper, We report the interplanetary effects of a fast coronal mass ejection (CME) associated with the intense X2.7 flare that occurred on 05 May 2015. The near-Sun signatures of the CME at low-coronal heights $<$2 {R$_{\odot}$} are…

太阳与恒星天体物理 · 物理学 2016-06-01 Abhishek Johri , P. K. Manoharan

In our own solar system, the necessity of understanding space weather is readily evident. Fortunately for Earth, our nearest stellar neighbor is relatively quiet, exhibiting activity levels several orders of magnitude lower than young,…

太阳与恒星天体物理 · 物理学 2016-11-25 Alicia Aarnio , Keivan Stassun , Sean Matt

The magnetic field of the Sun drives a wide range of eruptive phenomena, from small-scale nanoflares to large flares and coronal mass ejections (CMEs). While direct observations of solar activity cover only the past few decades, indirect…

太阳与恒星天体物理 · 物理学 2026-02-12 Valeriy Vasilyev , Natalie Krivova , Ilya Usoskin

We study dynamics of relativistic Coronal Mass Ejections (CMEs), from launching by shearing of foot-points (either slowly - the ``Solar flare'' paradigm, or suddenly - the ``star quake" paradigm), to propagation in the preceding magnetar…

高能天体物理现象 · 物理学 2023-08-14 Praveen Sharma , Maxim Barkov , Maxim Lyutikov

Coronal Mass Ejections (CMEs) are subject to changes in their direction of propagation, tilt, and other properties as they interact with the variable solar wind. We investigated the heliospheric propagation of 15 Earth-impacting CMEs…

太阳与恒星天体物理 · 物理学 2024-11-05 Sandeep Kumar , Nandita Srivastava , Nat Gopalswamy , Ashutosh Dash

This paper updates the influence of environmental and source factors of shocks driven by coronal mass ejections (CMEs) that are likely to influence the solar energetic particle (SEP) events. The intensity variation due to CME interaction…

太阳与恒星天体物理 · 物理学 2015-05-30 Nat Gopalswamy

We present an analysis of the fast coronal mass ejection (CME) of 2012 March 7, which was imaged by both STEREO spacecraft and observed in situ by MESSENGER, Venus Express, Wind and Mars Express. Based on detected arrivals at four different…

太阳与恒星天体物理 · 物理学 2014-07-18 T. Rollett , C. Moestl , M. Temmer , R. A. Frahm , J. A. Davies , A. M. Veronig , B. Vrsnak , U. V. Amerstorfer , C. J. Farrugia , T. Zic , T. L. Zhang

The coronal blowout jet, extreme ultraviolet (EUV) wave and coronal mass ejection (CME) are common phenomena in the solar atmosphere. In this paper, we report the occurrence of an M-shaped CME event associated with a blowout jet and an EUV…

We report observations of thermal emission from the frontal structure of a coronal mass ejection (CME) using data obtained with the Gauribidanur RAdioheliograPH (GRAPH) simultaneously at 80 MHz and 53 MHz on 2016 May 1. The CME was due to…

太阳与恒星天体物理 · 物理学 2021-05-05 R. Ramesh , A. Kumari , C. Kathiravan , D. Ketaki , T. J. Wang