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36 papers · 1 filter
Multi-Passband Observations of A Solar Flare over the He I 10830 Å line
Yan Xu, Xu Yang, Graham S. Kerr +5
This study presents a C3.0 flare observed by the BBSO/GST and IRIS, on 2018-May-28 around 17:10 UT. The Near Infrared Imaging Spectropolarimeter (NIRIS) of GST was set to spectral…
Ultraviolet Spectropolarimetry with Polstar: Interstellar Medium Science
B-G Andersson, Geoffrey C. Clayton, Kirstin D. Doney +5
Continuum polarization over the UV-to-microwave range is due to dichroic extinction (or emission) by asymmetric, aligned dust grains. Because of both grain alignment and scattering…
The Origin of Underdense Plasma Downflows Associated with Magnetic Reconnection in Solar Flares
Chengcai Shen, Bin Chen, Katharine K. Reeves +3
Magnetic reconnection is a universal process that powers explosive energy release events such as solar flares, geomagnetic substorms, and some astrophysical jets. A characteristic…
Torus-Stable Zone Above Starspots
Xudong Sun, Tibor Török, Marc L. DeRosa
Whilst intense solar flares are almost always accompanied by a coronal mass ejection (CME), reports on stellar CMEs are rare, despite the frequent detection of stellar 'super flare…
The solar internetwork. III. Unipolar versus bipolar flux appearance
Milan Gošić, Luis R. Bellot Rubio, Mark C. M. Cheung +3
Small-scale internetwork (IN) magnetic fields are considered to be the main building blocks of the quiet Sun magnetism. For this reason, it is crucial to understand how they appear…
Understanding the Origins of Problem Geomagnetic Storms Associated With "Stealth" Coronal Mass Ejections
Nariaki V. Nitta, Tamitha Mulligan, Emilia K. J. Kilpua +14
Geomagnetic storms are an important aspect of space weather and can result in significant impacts on space- and ground-based assets. The majority of strong storms are associated wi…