Results 21 to 30 of about 205 (182)
The Width, Density, and Outflow of Solar Coronal Streamers
The Astrophysical Journal, 2020 Abstract Characterizing the large-scale structure and plasma properties of the inner corona is crucial to understanding the source and subsequent expansion of the solar wind and related space weather effects. Here, we apply a new coronal rotational tomography method, along with a method to narrow streamers and refine the density estimate,
Huw Morgan, Anthony C. Cook
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First Infrared Coronal Spectra from DKIST/Cryo-NIRSP: Comparisons with Global MHD Models
The Astrophysical Journal, 2023 The Cryogenic Near-Infrared Spectropolarimeter (Cryo-NIRSP) is now conducting science operations at the National Science Foundation’s Daniel K. Inouye Solar Telescope (DKIST).
Thomas A. Schad +6 more
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On the Lyman-alpha and Lyman-beta lines in solar coronal streamers [PDF]
Astronomy & Astrophysics, 2006 We investigate the formation of the H I Lyman-alpha and Lyman-beta lines in an equatorial coronal streamer. Particular attention is paid to frequency redistribution for the scattering of the incident radiation. The properties of the spectral lines are studied.
Labrosse, Nicolas, Li, Xing, Li, Bo
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Journal of Space Weather and Space Climate, 2021 We discuss the significant implications of three eye-witness drawings of the total solar eclipse on 1706 May 12 in comparison with two on 1715 May 3, for our understanding of space climate change.
Hayakawa Hisashi +5 more
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The Astrophysical Journal, 2023 Differential emission measure (DEM) inversion methods use the brightness of a set of emission lines to infer the line-of-sight (LOS) distribution of the electron temperature ( T _e ) in the corona.
Benjamin Boe +2 more
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Observational Kinematic Characteristics of Blobs in Solar Coronal Helmet and Pseudo Streamers
The Astrophysical Journal Letters, 2021 Abstract We examine two helmet and two pseudo streamers (HSs and PSs) observed on 2018 and 2019. The HSs (PSs) have dark coronal cavities and stretched loop structures (twin coronal cavities and narrow plasma sheet) at their bases, which are well observed in K-Coronagraph (K-Cor).
Jae-Ok Lee +6 more
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Lateral Confinement and the Remarkably Self-similar Nature of Coronal Pseudostreamer Mass Ejections
The Astrophysical Journal, 2023 Coronal mass ejections (CMEs) that originate from pseudostreamers, which separate coronal holes of the same magnetic polarity, are characterized by a narrow (∼5°–30°), fan-shaped appearance in white-light coronagraph images.
Y.-M. Wang, P. Hess
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Recent insights on CME deflections at low heights
Frontiers in Astronomy and Space Sciences, 2023 It has been shown that the magnetic structures surrounding coronal mass ejection (CME) events play a crucial role in their development and evolution along the first few solar radii.
M. Cécere +4 more
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Solar cycle variation of the temperature structure within the cores of coronal streamers [PDF]
Astronomy & Astrophysics, 2002 We use the Coronal Diagnostic Spectrometer onboard the Solar and Heliospheric Observatory (SOHO) to analyze conditions in coronal streamer structures observed close to solar minimum (1996 July 8) and near maximum (1999 August 5). We measured the intensities of emission lines from Fe IX–XV ions and found the most intense emission to be from Fe XI at ...
Foley, C.R. +3 more
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The Astrophysical Journal, 2023 Type II solar bursts are radio signatures of shock waves in the solar corona driven by solar flares or coronal mass ejections (CMEs). Therefore, these bursts present complex spectral morphologies in solar dynamic spectra.
Artem Koval +6 more
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