Results 1 to 10 of about 581 (164)
Coronal holes and solar-terrestrial relationships
Geofísica Internacional, 1991 En este trabajo se discute el papel que juegan los hoyos coronales del Sol en las perturbaciones del viento solar y en las alteraciones del ambiente terrestre.
S. Bravo
doaj +2 more sources
Unipolarity of the Solar Magnetic Field in Equatorial Coronal Holes
The Astrophysical JournalA study of the unbalanced magnetic polarity distribution of 70 coronal holes was performed. Data from the Helioseismic and Magnetic Imager were used to examine the photospheric line-of-sight magnetic field ( B _LOS ) beneath these coronal holes.
Khagendra Katuwal, R. T. James McAteer
doaj +3 more sources
Living Reviews in Solar Physics, 2009 Coronal holes are the darkest and least active regions of the Sun, as observed both on the solar disk and above the solar limb. Coronal holes are associated with rapidly expanding open magnetic fields and the acceleration of the high-speed solar wind ...
Steven R. Cranmer
doaj +2 more sources
Chromosphere Activity Relation with Solar Dynamo Magnetic Activity Cycle [PDF]
Iranian Journal of Astronomy and Astrophysics, 2022 In this article, we analyzed the abnormal thickness of the chromosphere above the coronal holes (CH) at the poles of the Sun for 13 years (2010-2022), on the 15th of every month, by using AIA/SDO telescope data.
Ehsan Tavabi, Mina Rajabi, Sima Zeighami
doaj +1 more source
The Astrophysical Journal, 2023 This paper is dedicated to the new implicit unstructured coronal code COCONUT, which aims at providing fast and accurate inputs for space-weather forecasting as an alternative to empirical models.
Barbara Perri +7 more
doaj +1 more source
Variations in Daily Maximum Areas and Longitudinal Widths of Solar Coronal Holes in 2017–2020
Universe, 2022 We considered coronal holes as a manifestation of the large-scale magnetic field of the Sun. The main goal of this work was to study the variations in the largest areas and longitudinal widths of solar coronal holes observed daily in the polar and mid ...
Alexandr Riehokainen +6 more
doaj +1 more source
How did the solar wind structure change around the solar maximum? From interplanetary scintillation observation [PDF]
Annales Geophysicae, 2003 Observations from the second Ulysses fast latitude scan show that the global structure of solar wind near solar maximum is much more complex than at solar minimum.
K. Fujiki +8 more
doaj +1 more source
Ion-cyclotron waves in solar coronal hole [PDF]
New Astronomy, 2012 We investigate the effect of the Plume/Interplume Lane (PIPL) structure of the solar Polar Coronal Hole (PCH) on the propagation characteristics of ion-cyclotron waves (ICW). The gradients of physical parameters determined by SOHO and TRACE satellites both parallel and perpendicular to the magnetic field are considered with the aim of determining how ...
Dogan S., Pekünlü E.R.
openaire +2 more sources
The Astrophysical Journal Letters, 2023 The omnipresence of transient fluctuations in the solar wind, such as switchbacks (SBs) and small-scale magnetic flux ropes (SMFRs), have been well observed by the in situ observation of Parker Solar Probe (PSP), yet their sources are not clear. Possible
Nengyi Huang +2 more
doaj +1 more source
DARK JETS IN SOLAR CORONAL HOLES [PDF]
The Astrophysical Journal, 2015 16 pages, 12 figures, submitted to ...
openaire +2 more sources