Results 71 to 80 of about 1,216,409 (346)

A Precursor to Solar Prominence Eruptions: Detection and Analysis of EUV Prominence Oscillations

open access: yesThe Astrophysical Journal
The eruption of prominences can have a significant influence on the solar–terrestrial environment. However, accurately predicting these eruptions remains a challenge. We apply automated detection methods for extreme ultraviolet (EUV) prominences observed
William Beckwith-Chandler   +2 more
doaj   +1 more source

Diagnostics of active and eruptive prominences through hydrogen and helium lines modelling [PDF]

open access: yesAnnales Geophysicae, 2008
In this study we show how hydrogen and helium lines modelling can be used to make a diagnostic of active and eruptive prominences. One motivation for this work is to identify the physical conditions during prominence activation and eruption.
N. Labrosse   +3 more
doaj   +1 more source

Formation of Solar Prominences [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 1968
Thermal instability mechanism for quiescent solar prominence formation by condensation from solar corona, noting condensation inhibition by free electrons heat ...
P. K. Raju, M. S. Vardya
openaire   +1 more source

TANGLED MAGNETIC FIELDS IN SOLAR PROMINENCES [PDF]

open access: yesThe Astrophysical Journal, 2010
Solar prominences are an important tool for studying the structure and evolution of the coronal magnetic field. Here we consider so-called "hedgerow" prominences, which consist of thin vertical threads. We explore the possibility that such prominences are supported by tangled magnetic fields. A variety of different approaches are used.
van Ballegooijen, A. A., Cranmer, S. R.
openaire   +2 more sources

DYNAMICS OF A SOLAR PROMINENCE TORNADO OBSERVED BY SDO/AIA ON 2012 NOVEMBER 7–8 [PDF]

open access: yes, 2015
We study the detailed dynamics of a solar prominence tornado using time series of 171, 304, 193, and 211 Å spectral lines obtained by the Solar Dynamics Observatory/Atmospheric Imaging Assembly during 2012 November 7–8.
I. Mghebrishvili   +6 more
semanticscholar   +1 more source

Unassisted Photoelectrochemical Hydrogen Production Coupled with Selective Glucose Oxidation Using Metal Halide Perovskite Photoanodes

open access: yesAdvanced Functional Materials, EarlyView.
A metal halide perovskite‐based photoanode integrated with a CoNiFe layered double hydroxide (LDH) cocatalyst is reported for selective glucose oxidation reaction (GOR), achieving simultaneous and unassisted photoelectrochemical hydrogen production. This system delivers high photocurrent density, excellent Faradaic efficiency of GOR, and strong techno ...
Shujie Zhou   +12 more
wiley   +1 more source

High-resolution Observation of Solar Prominence Plumes Induced by Enhanced Spicular Activity

open access: yesThe Astrophysical Journal Letters
Solar prominences are the most prominent large-scale structures observed above the solar limb in emission in chromospheric lines but in absorption in coronal lines. At the bottom of prominences often appears a bubble, with plumes occasionally rising from
Wensi Wang   +3 more
doaj   +1 more source

Near‐Infrared Emitting Lanthanide Catecholate Giant Single Crystals – Morphology Control and Photon Down‐Conversion

open access: yesAdvanced Functional Materials, EarlyView.
Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr   +7 more
wiley   +1 more source

Multispacecraft Observations of 2022 February 8 Prominence Cavity Eruption

open access: yesThe Astrophysical Journal
Helmet streamers are common structures that shape the corona at the largest scales, as observed in eclipse and white-light images. Helmet streamers overlie one cavity embedding a prominence channel and are surrounded by an open field of opposite-polarity
Nishu Karna, Mari Paz Miralles
doaj   +1 more source

SPECTRO-POLARIMETRIC IMAGING REVEALS HELICAL MAGNETIC FIELDS IN SOLAR PROMINENCE FEET [PDF]

open access: yes, 2015
Solar prominences are clouds of cool plasma levitating above the solar surface and insulated from the million-degree corona by magnetic fields. They form in regions of complex magnetic topology, characterized by non-potential fields, which can evolve ...
M. M. González   +10 more
semanticscholar   +1 more source

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