Search Publications
Formation of Two Homologous Transequatorial Loops
Pevtsov, Alexei A.; Song, Yongliang; Su, Jiangtao +4 more
The formation mechanism of two homologous transequatorial loops (TLs) of July 7-8, 1999 (SOL1999-07-07) is studied. The TLs connected active region AR 8614 from the northern hemisphere to AR 8626 in the southern hemisphere. The first TL appeared as a distinct structure at 12:49 UT on July 7, the second TL appeared at 06:21 UT, on July 8. Important…
The Distribution Function of the Average Iron Charge State at 1 AU: From a Bimodal Wind to ICME Identification
Cid, C.; Larrodera, C.
We aim to investigate the distribution function of the iron charge state, at 1 AU to check if it corresponds to a bimodal wind. We use data from the Solar Wind Ion Composition Spectrometer (SWICS) instrument on board the Advanced Composition Explorer (ACE) along 20 years. We propose the bi-Gaussian function as the probability distribution function…
Open-field Coronal Structures Neighbouring the Sunspot of AR 8535
Vrublevskis, A.; Ryabov, B. I.
We make use of the Potential Field Source Surface (PFSS) model and reveal new details in the strong fields of the dominant sunspot of the active region (AR) 8535. Due to its importance in determining the field line connectivity and topology with resulting consequences for both plasma confinement and dynamics we construct the global magnetic fields…
EUV Wave Detection and Characterization Using Deep Learning
Liu, Sixuan; Xu, Long; Yan, Yihua +1 more
Coronal Mass Ejections (CMEs) are the most violent solar bursts. They cause severe disturbances in the solar-terrestrial space and affect human activities in many aspects, especially causing damage to high-tech infrastructure. It usually takes few hours for a CME to arrive at the Earth after eruption. Therefore, many efforts have been devoted to C…
Editorial: Solar Wind at the Dawn of the Parker Solar Probe and Solar Orbiter Era
Lapenta, Giovanni; van Driel-Gesztelyi, Lidia; Zhukov, Andrei
Solar Wind 15 brought together almost 250 experts from all continents of the world to discuss the current trends and future perspectives of the research on the Sun and its solar wind. The present article collection recaptures some of the highlights of their contributions.
New Types of the Chromospheric Anemone Microflares: Case Study
Dumin, Yurii V.; Somov, Boris V.
Chromospheric anemone microflares (AMFs) are transient solar phenomena whose emission regions have a multi-ribbon configuration. As distinct from the so-called "atypical" solar flares, also possessing a few ribbons, the temporal and spatial scales of AMFs are a few times less, and the configuration of their ribbons is more specific (star-like). Th…
Comparative Study of a Sunspot at Two Different Instances of Time
Hamedivafa, Hashem
We investigate the evolutionary effects on the brightness of a sunspot as well as on the properties of its fine-structures using two sets of time series of G-band images of a single sunspot in NOAA 10944 recorded at two symmetric locations on the solar disc by Hinode/SOT (Solar Optical Telescope). The second time series (phase W) was recorded 2.5 …
Multiwavelength Analysis of the Kinematics of a Long Duration Flare-CME Event on 27 January 2012
Shanmugaraju, A.; Suresh, K.; Selvarani, G. +1 more
We present a detailed analysis of a long-duration flare associated with a coronal mass ejection (CME) event that occurred on 27 January 2012 in the active region (AR) 11402. We analyze the kinematics of the CME and the close relationship between the flare, radio burst, and CME. We used STEREO (Solar Terrestrial Relations Observatory)/EUVI A (Extre…