Results 51 to 60 of about 242,574 (198)

Study on the Temporal Evolution of the Radial Differential Rotation of Solar Corona Using Radio Emissions

The Astrophysical Journal
The daily measurements of the disk-integrated solar radio flux, observed by the Radio Solar Telescope Network, at 245, 410, 610, 1415, 2695, 4995, and 8800 MHz during the time interval of 1989 January 1 to 2019 December 17, are used to investigate the ...
N. B. Xiang, X. H. Zhao, L. H. Deng, F. Y. Li, Y. J. Wang, X. W. Tan   +5 more
doaj   +1 more source

Spoke-like differential rotation in a convective dynamo with a coronal envelope

, 2013
We report on the results of four convective dynamo simulations with an outer coronal layer. The magnetic field is self-consistently generated by the convective motions beneath the surface.
Brandenburg, Axel, Käpylä, Petri J., Mantere, Maarit. J., Warnecke, Jörn   +3 more
core   +1 more source

The Sun is less active than other solar-like stars

, 2020
Magnetic activity of the Sun and other stars causes their brightness to vary. We investigate how typical the Sun's variability is compared to other solar-like stars, i.e. those with near-solar effective temperatures and rotation periods.
Amazo-Gomez, Eliana M., Cameron, Robert H., Krivova, Nathalie A., Montet, Benjamin T., Reinhold, Timo, Shapiro, Alexander I., Solanki, Sami K.   +6 more
core   +1 more source

Differential Rotation of the Solar Chromosphere: A Century-long Perspective from Kodaikanal Solar Observatory Ca ii K Data

The Astrophysical Journal
Chromospheric differential rotation is a key component in comprehending the atmospheric coupling between the chromosphere and the photosphere at different phases of the solar cycle. In this study, we therefore utilize the newly calibrated multidecadal Ca
Dibya Kirti Mishra, Srinjana Routh, Bibhuti Kumar Jha, Theodosios Chatzistergos, Judhajeet Basu, Subhamoy Chatterjee, Dipankar Banerjee, Ilaria Ermolli   +7 more
doaj   +1 more source

Influence of projection effects on the observed differential rotation rate in the UV corona

Journal of Advanced Research, 2013
Following previous investigations by Giordano and Mancuso [1] and Mancuso and Giordano [2,3] on the differential rotation of the solar corona as obtained through the analysis of the intensity time series of the O VI 1032 Å spectral line observed by the ...
Salvatore Mancuso, Silvio Giordano
doaj   +1 more source

Differential rotation and meridional flow of Arcturus

, 2010
The spectroscopic variability of Arcturus hints at cyclic activity cycle and differential rotation. This could provide a test of current theoretical models of solar and stellar dynamos. To examine the applicability of current models of the flux transport
Brown, Charbonneau, Chatterjee, Dikpati, Gray, Gray, Griffin, Kichatinov, Kitchatinov, Kitchatinov, Kitchatinov, Kitchatinov, Küker, Küker, Küker, Miesch, Ossendrijver, Trimble, Worley, Yoshimura   +19 more
core   +1 more source

Analysis of the Influence of Terrain Orientation on the Design of PV Facilities with Single-Axis Trackers

Applied Sciences, 2020
This paper investigates how to optimally orient the photovoltaic solar trackers of an axis parallel to the terrain, applying the sky model of Hay–Davies. This problem has been widely studied.
Francisco J. Gómez-Uceda, Isabel M. Moreno-Garcia, José M. Jiménez-Martínez, Rafael López-Luque, Luis M. Fernández-Ahumada   +4 more
doaj   +1 more source

Exploring the Temporal Variation of the Solar Quadrupole Moment J 2

The Astrophysical Journal, 2023
Recently, Rozelot & Eren pointed out that the first solar gravitational moment ( J _2 ) might exhibit a temporal variation. The suggested explanation is through the temporal variation of the solar rotation with latitude.
Saliha Eren, Jean-Pierre Rozelot
doaj   +1 more source

Comparison of the sidereal angular velocity of subphotospheric layers and small bright coronal structures during the declining phase of solar cycle 23

, 2009
Context. We compare solar differential rotation of subphotospheric layers derived from local helioseismology analysis of GONG++ dopplergrams and the one derived from tracing small bright coronal structures (SBCS) using EIT/SOHO images for the period ...
A. Zaatri, Altrock, Badalyan, Beck, Brajsa, Brajsa, Brajsa, Brajsa, Brajsa, Corbard, D'Silva, Giordano, H. Wöhl, Harrison, Hill, Howard, Joshi, Karachik, Koch, Komm, Li, M. Roth, Mehta, Mouradian, Obridko, Pres, R. Brajša, Ruzdjak, Santos, Schröter, T. Corbard, Zaatri   +31 more
core   +3 more sources

Rotation of Solar Chromosphere: A Global Perspective of Mg II Index during the Decay Phase of the Modern Maximum

The Astrophysical Journal
Rotation is one of the fundamental characteristics of the Sun, and it plays a crucial role in understanding the magnetic activities and dynamo processes.
Ruoxue Sha, Linhua Deng, Miao Wan, Xiaoyu Dong, Fuyu Li, Tingting Xu, Kunyan Wang   +6 more
doaj   +1 more source