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Solar coronal dimmings have been observed extensively in the past two decades. Due to their close association with coronal mass ejections (CMEs), there is a critical need to improve our understanding of the physical processes that cause…

Solar and Stellar Astrophysics · Physics 2022-04-13 Meng Jin , Mark C. M. Cheung , Marc L. DeRosa , Nariaki V. Nitta , Carolus J. Schrijver

We study the formation of four coronal mass ejections (CMEs) originating from homologous blowout jets. All of the blowout jets originated from NOAA active region (AR) 11515 on 2012 July 2, within a time interval of $\approx$14 hr. All of…

Solar and Stellar Astrophysics · Physics 2024-05-07 Binal D. Patel , Bhuwan Joshi , Alphonse C. Sterling , Ronald L. Moore

Coronal mass ejections (CMEs) on the early Sun may have profoundly influenced the planetary atmospheres of early Solar System planets. Flaring young solar analogues serve as excellent proxies for probing the plasma environment of the young…

Intensity bursts in ultraviolet (UV) to X-ray wavelengths and plasma jets are typical signatures of magnetic reconnection and the associated impulsive heating of the solar atmospheric plasma. To gain new insights into the process,…

Solar and Stellar Astrophysics · Physics 2021-12-15 L. P. Chitta , S. K. Solanki , H. Peter , R. Aznar Cuadrado , L. Teriaca , U. Schühle , F. Auchère , D. Berghmans , E. Kraaikamp , S. Gissot , C. Verbeeck

The Sun's atmosphere is frequently disrupted by coronal mass ejections (CMEs), coupled with flares and energetic particles. In the standard picture, the coupling is explained by magnetic reconnection at a vertical current sheet connecting…

Solar and Stellar Astrophysics · Physics 2019-03-11 Tingyu Gou , Rui Liu , Bernhard Kliem , Yuming Wang , Astrid M. Veronig

This paper investigates the temporal evolution of temperature, emission measure, energy loss and velocity in a C-class solar flare from both an observational and theoretical perspective. The properties of the flare were derived by following…

Astrophysics · Physics 2009-11-13 Claire L. Raftery , Peter T. Gallagher , Ryan O. Milligan , James A. Klimchuk

Solar filaments often exhibit rotation and deflection during eruptions, which would significantly affect the geoeffectiveness of the corresponding coronal mass ejections (CMEs). Therefore, understanding the mechanisms that lead to such…

Solar and Stellar Astrophysics · Physics 2023-08-21 Jinhan Guo , Ye Qiu , Yiwei Ni , Yang Guo , Chuan Li , Yuhang Gao , Brigitte Schmieder , Stefaan Poedts , Pengfei Chen

Filament eruption on 30 April - 1 May 2010, which shows the reconnection of one filament leg with a region far away from its initial position, is analyzed. Observations from three viewpoints are used for as precise as possible measurements…

Solar and Stellar Astrophysics · Physics 2014-05-23 Boris Filippov

We investigate the footpoints of four erupted magnetic flux ropes (MFRs) that appear as sigmoidal hot channels prior to the eruptions in the Atmospheric Imaging Assembly high temperaure passbands. The simultaneous Helioseismic and Magnetic…

Solar and Stellar Astrophysics · Physics 2016-08-03 X. Cheng , M. D. Ding

A filament eruption was observed with the Siberian Solar Radio Telescope (SSRT) on June 23 2012, starting around 06:40 UT, beyond the West limb. The filament could be followed in SSRT images to heights above 1 Rs, and coincided with the…

Solar and Stellar Astrophysics · Physics 2015-06-17 C. E. Alissandrakis , A. A. Kochanov , S. Patsourakos , A. T. Altyntsev , S. V. Lesovoi , N. N. Lesovoya

Solar filaments can be formed via chromospheric evaporation followed by condensation in the corona or by the direct injection of cool plasma from the chromosphere to the corona. In this paper, with high-resolution H$\alpha$ data observed by…

Solar and Stellar Astrophysics · Physics 2017-02-22 P. Zou , C. Fang , P. F. Chen , K. Yang , Wenda Cao

We present a numerical investigation of the coronal evolution of a coronal mass ejection (CME) on 2005 August 22 using a 3-D thermodynamics magnetohydrodynamic model, the SWMF. The source region of the eruption was anemone active region…

Solar and Stellar Astrophysics · Physics 2012-09-12 N. Lugaz , C. Downs , K. Shibata , I. I. Roussev , A. Asai , T. Gombosi

We present stereoscopic observations of six sequent eruptions of a filament in the active region NOAA 11045 on 2010 Feb 8, with the advantage of the STEREO twin viewpoints in combination with the earth viewpoint from SOHO instruments and…

Solar and Stellar Astrophysics · Physics 2011-06-09 Yuandeng Shen , Yu Liu , Rui Liu

The unpredictability of solar filament eruptions presents major challenges for forecasting space weather, as such eruptions frequently drive coronal mass ejections (CMEs) that impact the heliosphere. While nearby flux emergence is often…

Using the multi-temperature observations from SDO/AIA on 30th December 2019, we provide a signature of prominence driven forced magnetic reconnection in the corona and associated plasma dynamics during 09:20 UT to 10:38 UT. A hot prominence…

Solar and Stellar Astrophysics · Physics 2021-10-20 A. K. Srivastava , Sudheer K. Mishra , P. Jelínek

We study a sequence of eruptive events including filament eruption, a GOES C4.3 flare and a coronal mass ejection. We aim to identify the possible trigger(s) and precursor(s) of the filament destabilisation; investigate flare kernel…

Solar and Stellar Astrophysics · Physics 2014-07-02 Z. Huang , M. S. Madjarska , K. Koleva , J. G. Doyle , P. Duchlev , M. Dechev , K. Reardon

Eruptive phenomena such as plasmoid ejections or jets are an important feature of solar activity with the potential for improving our understanding of the dynamics of the solar atmosphere. Such ejections are often thought to be signatures…

Solar and Stellar Astrophysics · Physics 2017-05-22 M. Shimojo , H. S. Hudson , S. M. White , T. S. Bastian , K. Iwai

We present an event observed by Parker Solar Probe at $\sim$0.2 au on March 2, 2022 in which imaging and \emph{in situ} measurements coincide. During this event, PSP passed through structures on the flank of a streamer blowout CME including…

We present results from 3D magnetohydrodynamic (MHD) simulations of the emergence of a twisted convection zone flux tube into a pre-existing coronal dipole field. As in previous simulations, following the partial emergence of the…

Solar and Stellar Astrophysics · Physics 2015-06-18 J. E. Leake , M. G. Linton , S. K. Antiochos

Coronal mass ejections (CMEs) are large-scale eruptions of plasma from the Sun that play an important role in space weather. Faraday rotation (FR) is the rotation of the plane of polarization that results when a linearly polarized signal…

Solar and Stellar Astrophysics · Physics 2017-04-12 Jason E. Kooi , Patrick D. Fischer , Jacob J. Buffo , Steven R. Spangler