Results 301 to 310 of about 1,350,678 (342)

Automatic Solar Filament Segmentation and Characterization

Solar Physics, 2011
This paper presents a generic method to automatically segment and characterize solar filaments from various Hα full-disk solar images, obtained by different solar observatories, with different dynamic ranges and statistical properties. First, a cascading Hough circle detector is designed to find the center location and radius of the solar disks. Second,
Y. Yuan, F. Y. Shih, J. Jing, H. Wang, J. Chae   +4 more
openaire   +1 more source

Eruption of a Bifurcated Solar Filament

Solar Physics, 2013
We study the partial eruption of a solar filament observed by the Solar Dynamics Observatory (SDO) and the Solar TErrestrial RElations Observatory-Ahead (STEREO-A) spacecraft on 9 May 2012. This filament was located in Active Region NOAA 11475 and consisted of two distinct branches, separated in height above the active region’s primary polarity ...
Chunming Zhu, David Alexander
openaire   +1 more source

Filament current systems and solar flares

Solar Physics, 1996
Relationship between the rising movement of the filaments, the evolutions of filament current systems and the flares on 13 May, 1981, 16 May, 1981, and 4 February, 1986, have been studied. We have obtained the following results: (1) The flare-filament current systems show great variety.
Yu-Hua Tang, Lian-Shu Cui, Chun-Lin Yin, Ao-Ao Xu   +3 more
openaire   +1 more source

The corona associated with solar filaments

Solar Physics, 1981
Spectroheliograms in high temperature ions such as Fe XV show the existence of both filaments that are brighter than the ambient corona and filaments that are darker than the ambient corona. The relationship of the filaments to photospheric magnetograms is described, and a possible physical mechanism to explain the differences is discussed.
openaire   +1 more source

Disappearing solar filaments and geomagnetic activity

Solar Physics, 1986
As a sequel to our recent identification of the high-speed stream as the candidate structure in the solar wind at 1 AU, that is primarily responsible for the geomagnetic disturbances occasionally noticed after ‘disparition brusques’ (DBs) of solar filaments (Sastri et al., 1985), we report here that the streams, inferred to be recurrent in our earlier ...
openaire   +1 more source

Planar solitonic filaments in solar physics

Astrophysics and Space Science, 2007
A new class of analytical solution of the coupled system of Da Rios-diffusion equation in magnetohydrodynamic (MHD) representing solitonic vortex filaments is obtained. One of the solutions is similar to the one found by Rogers and Schief describing a solitary wave propagating along a constant torsion vortex filament.
openaire   +1 more source

Reconstruction of a Hundred Years Series of Solar Filaments from Daily Observational Data

Geomagnetism and Aeronomy, 2017
K. Tlatova, Valeriya Vasil’eva, A. Tlatov, A. Tlatov   +3 more
semanticscholar   +1 more source

Perovskite solar cells with atomically coherent interlayers on SnO2 electrodes

Nature, 2021
Hanul Min, Do Yoon Lee, Junu Kim
exaly  

Efficient perovskite solar cells via improved carrier management

Nature, 2021
Jason J Yoo, Gabkyung Seo, Matthew R Chua   +2 more
exaly  

Pseudo-halide anion engineering for α-FAPbI3 perovskite solar cells

Nature, 2021
Jaeki Jeong, Jongdeuk Seo, Haizhou Lu
exaly