Results 11 to 20 of about 16,504 (199)

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, Yunchun Jiang, Ruisheng Zheng, Yi Bi, Junchao Hong, Bo Yang   +5 more
openaire   +1 more source

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, A. K. Srivastava, Y. K. Rao, B. N. Dwivedi   +3 more
openaire   +2 more sources

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, N. P. Cartledge, E. R. Priest   +2 more
openaire   +1 more source

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, Maehara, Hiroyuki, Honda, Satoshi, Notsu, Yuta, Nogami, Daisaku, Shibata, Kazunari   +5 more
openaire   +1 more source

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.
openaire   +1 more source

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.
openaire   +1 more source

Formation of a Coronal Hole by a Quiet-Sun Filament Eruption

The Astrophysical Journal
Abstract 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, Eleanna Asvestari, Karin Dissauer, Michael Hahn, Stephan G. Heinemann, Veronika Jercic, Alexandros Koukras, Kilian Krikova, Jonas Saqri, Daniel W. Savin, Manuela Temmer, Astrid Veronig   +11 more
openaire   +2 more sources

Sun-as-a-star Observations of Obscuration Dimmings Caused by Filament Eruptions

The Astrophysical Journal
Abstract 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, Hui Tian, Astrid M. Veronig, Karin Dissauer   +3 more
openaire   +3 more sources

From Clinic to Computation: Multiscale Bioengineering Strategies for Durable Biological Aortic Valve Replacements

Advanced Functional Materials, EarlyView.
Bioprosthetic aortic valves have revolutionized the treatment of aortic stenosis, but their durability is limited by structural valve deterioration (SVD). This review focuses on the pericardial tissue at the heart of these valves, examining how its mechanical properties and calcification drive fatigue and failure.
Gabriele Greco, Pierfrancesco Gaziano, Serena Anglese, Simone Morganti, Carlo de Vincentiis, Ferdinando Auricchio, Michele Marino, Michele Conti   +7 more
wiley   +1 more source

In Situ 3D Bioprinting: Impact of Cross‐Linking on the Adhesive Properties of Hydrogels

Advanced Functional Materials, EarlyView.
In situ 3D bioprinting enables the direct deposition of cell‐laden, adhesive biomaterials for on‐site tissue regeneration. This review provides a comprehensive overview of how cross‐linking influences the bioadhesive properties of hydrogels used in 3D bioprinting, highlighting cross‐linking triggers, bioadhesion mechanisms, polymer interpenetration ...
Odile Romero Fernandez, Mulazim Hussain Asim, Shumaila Arshad, Gergely Kali, Andreas Bernkop‐Schnürch   +4 more
wiley   +1 more source