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相关论文: Shock-related radio emission during coronal mass e…

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This paper presents multiwavelength observations of a flare-generated type II radio burst. The kinematics of the shock derived from the type II closely match a fast EUV wave seen propagating through coronal arcade loops. The EUV wave was…

太阳与恒星天体物理 · 物理学 2016-08-31 Pankaj Kumar , D. E. Innes , K. S. Cho

The Sun is an active source of radio emission which is often associated with the acceleration of electrons arising from processes such as solar flares and coronal mass ejections (CMEs). At low radio frequencies (<100 MHz), numerous solar S…

太阳与恒星天体物理 · 物理学 2019-04-17 D. E. Morosan , P. T. Gallagher

We present a detailed three-dimensional (3D) view of a prominence eruption, coronal loop expansion, and coronal mass ejections (CMEs) associated with an M4.4 flare that occurred on 2011 March 8 in the active region NOAA 11165. Full-disk…

We analyse multiwavelength observations of an M2.9/1N flare that occurred in AR NOAA 11112 on 16 October 2010. AIA 211 {\AA} EUV images reveal the presence of a faster coronal wave (decelerating from ~1390 to ~830 km/s) propagating ahead of…

太阳与恒星天体物理 · 物理学 2016-10-26 Pankaj Kumar , K. -S. Cho , P. F. Chen , S. -C. Bong , Sung-Hong Park

In 2010 May 23-24, SDO observed the launch of two successive coronal mass ejections (CMEs), which were subsequently tracked by the SECCHI suite onboard STEREO. Using the COR2 coronagraphs and the heliospheric imagers (HIs), the initial…

空间物理 · 物理学 2015-06-11 N. Lugaz , C. J. Farrugia , J. A. Davies , C. Möstl , C. J. Davis , I. I. Roussev , M. Temmer

The successive type-II solar radio bursts observed on 31 July 2012 by the Bruny Island Radio Spectrometer (BIRS) in the frequency range between 62 - 6 MHz is reported and analyzed. The first type-II radio burst shows clear fundamental and…

太阳与恒星天体物理 · 物理学 2026-01-16 V. Vasanth

The extreme solar and SEP event of 20 January 2005 is analyzed from two perspectives. Firstly, we study features of the main phase of the flare, when the strongest emissions from microwaves up to 200 MeV gamma-rays were observed. Secondly,…

We present \emph{in situ} observations of the source regions of interplanetary (IP) type II radio bursts, using data from the Wind spacecraft during the period 1996-2002. We show the results of this survey as well as in-depth analysis of…

空间物理 · 物理学 2009-11-13 M. Pulupa , S. D. Bale

Coronal mass ejections (CMEs) are tightly related to filament eruptions and usually are their continuation in the upper solar corona. It is common practice to divide all observed CMEs into fast and slow ones. Fast CMEs usually follow…

太阳与恒星天体物理 · 物理学 2019-06-19 B. Filippov

We report on four large filament eruptions (FEs) from solar cycles 23 and 24 that were associated with large solar energetic particle (SEP) events and interplanetary type II radio bursts. The post-eruption arcades corresponded to mostly…

太阳与恒星天体物理 · 物理学 2015-06-11 N. Gopalswamy , P. Makela , S. Akiyama , S. Yashiro , H. Xie , N. Thakur , S. W. Kahler

Taking advantage of both the high temporal and spatial resolution of the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamics Observatory (SDO), we studied a limb coronal shock wave and its associated extreme ultraviolet (EUV)…

太阳与恒星天体物理 · 物理学 2015-05-28 Suli Ma , John C. Raymond , Leon Golub , Jun Lin , Huadong Chen , Paolo Grigis , Paola Testa , David Long

Large-scale solar eruptions have been extensively explored over many years. However, the properties of small-scale events with associated shocks have been rarely investigated. We present the analyses of a small-scale short-duration event…

太阳与恒星天体物理 · 物理学 2018-04-04 Beili Ying , Li Feng , Lei Lu , Jie Zhang , Jasmina Magdalenic , Yingna Su , Yang Su , Weiqun Gan

As is well known, CME propagation often results in the fragmentation of the solar atmosphere on smaller regions of density (magnetic field) enhancement (depletion). It is expected that this type of fragmentation may have radio signatures.…

Solar energetic particles acceleration by a shock wave accompanying a coronal mass ejection (CME) is studied. The description of the accelerated particle spectrum evolution is based on the numerical calculation of the diffusive transport…

高能天体物理现象 · 物理学 2017-02-09 A. S. Petukhova , I. S. Petukhov , S. I. Petukhov , L. T. Ksenofontov

We use high time cadence images acquired by the STEREO EUVI and COR instruments to study the evolution of coronal mass ejections (CMEs), from their initiation, through the impulsive acceleration to the propagation phase. For a set of 95…

太阳与恒星天体物理 · 物理学 2015-05-30 B. M. Bein , S. Berkebile-Stoiser , A. M. Veronig , M. Temmer , N. Muhr , I. Kienreich , D. Utz , B. Vršnak

The solar wind, when measured close to 1 au, is found to flow mostly radially outward. There are, however, periods when the flow makes angles up to 15$^\circ$ away from the radial direction, both in the east-west and north-south directions.…

太阳与恒星天体物理 · 物理学 2022-06-01 N. Al-Haddad , A. B. Galvin , N. Lugaz , C. J. Farrugia , W. Yu

We simulate possible stellar coronal mass ejection (CME) scenarios over the magnetic cycle of $\epsilon$ Eridani (18 Eridani; HD 22049). We use three separate epochs from 2008, 2011, and 2013, and estimate the radio emission frequencies…

From the GOES-12/SXI data, we studied the initial stage of motion for six rapid (over 1500 km/s) "halo" coronal mass ejections (HCMEs) and traced the motion of these HCMEs within the SOHO/LASCO C2 and C3 field-of-view. For these HCMEs the…

太阳与恒星天体物理 · 物理学 2012-08-30 V. G. Fainshtein , Yu. S. Zagaynova

In this paper, we present a detailed analysis of a coronal blowout jet eruption which was associated with an obvious extreme-ultraviolet (EUV) wave and one complicated coronal mass ejection (CME) event based on the multi-wavelength and…

太阳与恒星天体物理 · 物理学 2018-12-27 Y. H. Miao , Y. Liu , H. B. Li , Y. D. Shen , S. H. Yang , A. Elmhamdi , A. S. Kordi , Z. Z. Abidin

In the standard solar flare scenario, a large number of particles are accelerated in the corona. Nonthermal electrons emit both X-rays and radio waves. Thus, correlated signatures of the acceleration process are predicted at both…

太阳与恒星天体物理 · 物理学 2015-05-13 Marina Battaglia , Arnold O. Benz