Results 51 to 60 of about 5,676 (305)

Co-existence of two plasma phases in solar and AGN coronas [PDF]

Serbian Astronomical Journal, 1998
Here we have juxtaposed two distant cosmic locations of the Sun and AGN where neutral hydrogen appears in a close connection with hot coronas. Besides the solar photosphere, chromosphere and prominences where the presence of neutral hydrogen is ...
Kubičela A., Arsenijević J., Popović L.Č., Trajković N., Bon E.   +4 more
doaj   +1 more source

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

Advanced 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, Alexander Biewald, Andre Mähringer, Thaddäus J. Koller, Peter Mayer, Markus Döblinger, Achim Hartschuh, Dana D. Medina   +7 more
wiley   +1 more source

Prominence Oscillations

Living Reviews in Solar Physics, 2012
Prominences are intriguing, but poorly understood, magnetic structures of the solar corona. The dynamics of solar prominences has been the subject of a large number of studies, and of particular interest is the study of prominence oscillations.
Iñigo Arregui, Ramón Oliver, José Luis Ballester   +2 more
doaj  

Observation of Persistent Propagating Waves in a Solar Prominence

The Astrophysical Journal
Spectropolarimetric observation of a quiescent prominence was performed in He i 1083 nm. With the slit of the spectrograph fixed on the prominence, we obtained a time series of Stokes profiles for a duration of 108 minutes with a cadence of 8 s.
Kiyoshi Ichimoto, Yuki Hashimoto, Yuwei Huang, Ayumi Asai, Haruhi Shirato, Yuta Yamazoe, Kentaro Kusuno, Satoru Ueno, Daiki Yamasaki   +8 more
doaj   +1 more source

Decoupling Size and Electronic Effects in Doped SrTiO3 Photocatalysts Through Surface Area–Normalized CO2 Hydrogenation Rates

Advanced Functional Materials, EarlyView.
Exploring the photocatalytic reverse water–gas shift (RWGS) reaction on doped SrTiO3 nanoparticle films, reveals that normalizing catalytic rates by the catalyst's specific surface area (SSA) disentangled surface area effects from the catalyst's intrinsic material properties.
Dikshita Bhattacharyya, Baliana Shani, Isaac Holmes‐Gentle, Gerardo T Martinez, Martyn McLachlan, Nicola Seriani, Ludmilla Steier   +6 more
wiley   +1 more source

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

The 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, Claire Foullon, Erwin Verwichte   +2 more
doaj   +1 more source

Toward detailed prominence seismology - I. Computing accurate 2.5D magnetohydrodynamic equilibria

, 2011
Context. Prominence seismology exploits our knowledge of the linear eigenoscillations for representative magnetohydro- dynamic models of filaments. To date, highly idealized models for prominences have been used, especially with respect to the overall ...
Beliën, Blokland, Blokland, Dungey, Goedbloed, Goedbloed, Goedbloed, Hameiri, J. W. S. Blokland, Labrosse, Lin, Low, Low, Luna, Mackay, Petrie, Poedts, R. Keppens, Shafranov, Soler, Soler, van der Holst, Zelazny   +22 more
core   +1 more source

SOLAR PROMINENCES: “DOUBLE, DOUBLE… BOIL AND BUBBLE” [PDF]

The Astrophysical Journal, 2015
18 pages, 5 ...
Keppens, Rony, Xia, Chun, Porth, O.
openaire   +2 more sources

Tailoring the Properties of Functional Materials With N‐Oxides

Advanced Functional Materials, EarlyView.
The properties of materials bearing N‐oxide groups are often dominated by the polar N+─O− bond. It provides hydrophilicity, selective ion‐binding, electric conductivity, or antifouling properties. Many of the underlying mechanisms have only recently been discovered, and the interest in N‐oxide materials is rapidly growing.
Timo Friedrich, Michelle Kobus, Shirin Mesgarha, Erica Moretto, Laurens Grosche, Wolfgang Maison   +5 more
wiley   +1 more source

A Unified Model of Solar Prominence Formation with Self-consistent Heating

The Astrophysical Journal
Several models have been proposed to explain the formation of solar prominences, among which the evaporation–condensation model and the direct injection model are the most popular ones.
C. J. Huang, Y. W. Ni, J. H. Guo, P. F. Chen   +3 more
doaj   +1 more source