Results 11 to 20 of about 16,017 (81)
SYMPATHETIC FILAMENT ERUPTIONS FROM A BIPOLAR HELMET STREAMER IN THE SUN
The Astrophysical Journal, 2011 On 2005 August 5, two solar filaments erupted successively from different confined arcades underlying a common overarching multiple-arcade bipolar helmet streamer. We present detailed observations of these two events and identify them as sympathetic filament eruptions.
Jiayan Yang +5 more
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Twin CME Launched by a Blowout Jet Originated from the Eruption of a Quiet-Sun Mini-filament [PDF]
Solar Physics, 2019 We study a quiet-Sun blowout jet which is observed on 2014 May 16 by the instruments on board Solar Dynamics Observatory (SDO). We find the twin CME as jet-like and bubble-like CME simultaneously as observed by LASCO C2 on board Solar and Heliospheric Observatory (SoHO), Solar Terrestrial Relation Observatory (STEREO A and STEREO B/COR2).
Ritika Solanki +3 more
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Magnetic Flux Transport and the Formation of Filament Channels on the Sun
The Astrophysical Journal, 1998 Observations of filaments and filament channels on the Sun indicate that the magnetic fields in these structures exhibit a large-scale organization: filament channels in the northern hemisphere predominantly have axial fields directed to the right when viewed from the positive polarity side of the channel (dextral orientation), while those in the south
A. A. van Ballegooijen +2 more
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A filament eruption and coronal mass ejection from a superflare on a young Sun-like star
, 2023 We report that our optical spectroscopic observation of the young solar-type star EK Draconis reveals the first evidence for a stellar filament eruption associated with a superflare on a young Sun-like star EK Draconis. We monitored EK Draconis for about 30 nights with the TESS’s optical photometry and ground-based spectroscopy, and finally detected a ...
Namekata, Kosuke +5 more
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Reconstruction of Sun-as-Star Magnetic Field Structure and Evolution Using Filament Observations [PDF]
International Astronomical Union Colloquium, 1998 AbstractA technique is used to restore the magnetic field of the Sun viewed as star from the filament distribution seen on Hα photographs. For this purpose synoptic charts of the large-scale magnetic field reconstructed by the McIntosh method have been compared with the Sun-asstar solar magnetic field observed at Stanford.
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Observations and Modeling of a Filament on the Sun
The Astrophysical Journal, 2004 Hα observations of a filament were obtained at the Swedish Vacuum Solar Telescope in 1998 June. The U-shaped filament has a prominent barb that exhibits interesting fine structure and internal motions. A three-dimensional magnetic model of the filament is presented.
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Formation of a Coronal Hole by a Quiet-Sun Filament Eruption
The Astrophysical JournalAbstract A coronal hole formed as a result of a quiet-Sun filament eruption close to the solar disk center on 2014 June 25. We studied this formation using images from the Atmospheric Imaging Assembly (AIA), magnetograms from the Helioseismic and Magnetic Imager, and a differential emission measure analysis ...
Stefan J. Hofmeister +11 more
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Sun-as-a-star Observations of Obscuration Dimmings Caused by Filament Eruptions
The Astrophysical JournalAbstract Filament eruptions often lead to coronal mass ejections (CMEs) on the Sun and are one of the most energetic eruptive phenomena in the atmospheres of other late-type stars. However, the detection of filament eruptions and CMEs on stars beyond the solar system is challenging. Here, we present six filament eruption cases on the Sun
Yu Xu +3 more
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The Astrophysical Journal, 2015 We present the first observation of the formation and eruption of a small circular filament driven by a rotating network magnetic field (RNF) in the quiet Sun. In the negative footpoint region of an inverse J-shaped dextral filament, the RNF was formed by the convergence to supergranular junctions of several magnetic flux patches of the same polarity ...
Bo Yang +4 more
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The Astrophysical Journal, 2019 Abstract We present observations of a notable example of a disappearing solar filament (DSF) on 2013 September 29 that was associated with a large solar proton event (SPE) and discuss this event in the context of four recent studies that compare flare and SPE size parameters.
E. W. Cliver +3 more
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