Results 101 to 110 of about 10,729 (219)

Study of the solar coronal hole rotation

Advances in Space Research, 2018
Abstract Rotation of coronal holes is studied using data from SDO/AIA for 2014 and 2015. A new approach to the treatment of data is applied. Instead of calculated average angular velocities of each coronal hole centroid and then grouping them in latitudinal bins for calculating average rotation rates of corresponding latitudes, we compiled instant ...
N.B. Oghrapishvili, S.R. Bagashvili, D.A. Maghradze, T.Z. Gachechiladze, D.R. Japaridze, B.M. Shergelashvili, T.G. Mdzinarishvili, B.B. Chargeishvili   +7 more
openaire   +2 more sources

Evolution of an equatorial coronal hole structure and the released coronal hole wind stream: Carrington rotations 2039 to 2050

, 2017
The Sun is a highly dynamic environment that exhibits dynamic behavior on many different timescales. In particular, coronal holes exhibit temporal and spatial variability.
Berger, Lars, Heidrich-Meisner, Verena, Kruse, Martin, Peleikis, Thies, Wimmer-Schweingruber, Robert F.   +4 more
core   +1 more source

Propagating waves in polar coronal holes as seen by SUMER and EIS

, 2009
To study the dynamics of coronal holes and the role of waves in the acceleration of the solar wind, spectral observations were performed over polar coronal hole regions with the SUMER spectrometer on SoHO and the EIS spectrometer on Hinode.
Banerjee, Banerjee, Banerjee, Culhane, D. Banerjee, Deforest, G. R. Gupta, G. Stenborg, Kosugi, L. Teriaca, O'Shea, O'Shea, O'Shea, Ofman, Ofman, Ofman, Ofman, Popescu, S. Imada, S. K. Solanki, Torrence, Wilhelm   +21 more
core   +1 more source

Solar coronal holes observed with SOHO

, 2001
ISBN:3-89873-260 ...
openaire   +2 more sources

MHD waves in the solar north polar coronal hole

Astronomische Nachrichten, 2010
AbstractThe effects, hitherto not treated, of the temperature and the number density gradients, both in the parallel and the perpendicular direction to the magnetic field, of O VI ions, on the MHD wave propagation characteristics in the solar North Polar Coronal Hole are investigated.
Devlen, E., Pekunlu, E. R.
openaire   +3 more sources

Study of the mechanism for solar wind formation [PDF]

Observations of the corona and solar wind are analyzed and compared with generalized results derived from laboratory-scale experiments. It was shown that a thermal pressure gradient can make a major contribution to a precipitating plasma of the solar ...
Eselevich, V. G., Filippov, M. A.
core   +1 more source

Effect of coronal temperature on the scale of solar chromospheric jets

, 2015
We investigate the effect of coronal temperature on the formation process of solar chromospheric jets using two-dimensional magnetohydrodynamic simulations of the region from the upper convection zone to the lower corona.
Iijima, H., Yokoyama, T.
core   +1 more source

Near-earth solar wind flows and related geomagnetic activity during more than four solar cycles (1963–2011)

Journal of Space Weather and Space Climate, 2012
In past studies, we classified the near-Earth solar wind into three basic flow types based on inspection of solar wind plasma and magnetic field parameters in the OMNI database and additional data (e.g., geomagnetic indices, energetic particle, and ...
Richardson Ian G., Cane Hilary V.
doaj   +1 more source

Statistical properties of coronal hole rotation rates: Are they linked to the solar interior?

, 2017
The present paper discusses results of a statistical study of the characteristics of coronal hole (CH) rotation in order to find connections to the internal rotation of the Sun.
Bagashvili, Salome R., Chargeishvili, Bidzina B., De Causmaecker, Patrick, Japaridze, Darejan R., Khodachenko, Maxim L., Kosovichev, Alexander G., Kukhianidze, Vasil, Poedts, Stefaan, Ramishvili, George, Shergelashvili, Bidzina M., Zaqarashvili, Teimuraz V.   +10 more
core   +1 more source

Solar Origins of Short-Term Periodicities in Near-Earth Solar Wind and Interplanetary Magnetic Field

Applied Sciences
This study investigates the solar origins of short-term periodicities in the near-Earth solar wind and interplanetary magnetic field (IMF) using long-term observations (1995–2024) and Potential Field Source Surface modeling.
Huichao Li, Yunxi Zhang, Jinzhou Bao, Botian Tang, Jiangrong Xie, Kangyan Wang   +5 more
doaj   +1 more source