Results 41 to 50 of about 243,256 (287)

The Relative Position of the Solar Magnetic Dipole Axis and Rotation Axis of the Sun

Galaxies
We estimated the relative location of the solar rotation axis and the magnetic axis of the solar dipole, which were defined as centers of polar coronal holes.
Alexandr Riehokainen, Victoria Smirnova, Alexander Solov’ev, Polina Strekalova   +3 more
doaj   +1 more source

A Comparison of Solar Cycle Variations in the Equatorial Rotation Rates of the Sun's Subsurface, Surface, Corona, and Sunspot Groups

, 2013
Using the Solar Optical Observing Network (SOON) sunspot-group data for the period 1985-2010, the variations in the annual mean equatorial-rotation rates of the sunspot groups are determined and compared with the known variations in the solar equatorial ...
A. Brandenburg, A.G. Kosovichev, A.G. Kosovichev, B.B. Karak, D. Ruždjak, D.-Y. Chou, D.O. Gough, F. Meyer, F. Moreno-Insertis, F. Ward, F. Ward, G. Godoli, G.S. Suryanarayana, H. Balthasar, H.M. Antia, H.M. Antia, H.W. Babcock, I. Tuominen, J. Javaraiah, J. Javaraiah, J. Javaraiah, J. Javaraiah, J. Javaraiah, J. Javaraiah, J. Javaraiah, J. Javaraiah, J. Javaraiah, J. Javaraiah, J. Javaraiah, J. Javaraiah, J. Javaraiah, J. Javaraiah, J. Tuominen, K. Petrovay, K. Shibata, K.M. Hiremath, K.M. Hiremath, K.R. Sivaraman, L. Driel-Gesztelyi van, M. Dikpati, M. Schüssler, M. Suzuki, M.A. Kambry, N. Meunier, P. Foukal, R. Brajša, R. Howard, R. Howard, R. Howe, R. Jurdana-Šepić, R. Rosner, R.C. Carrington, R.K. Ulrich, R.K. Ulrich, S. Chandra, S. D’Silva, S.S. Gupta   +56 more
core   +1 more source

Solar-type Stars Observed by LAMOST and Kepler

, 2020
Obtaining measurements of chromospheric and photometric activity of stars with near-solar fundamental parameters and rotation periods is important for a better understanding of solar-stellar connection.
Bi, Shaolan, Du, Minghao, Li, Tanda, Li, Yaguang, Reinhold, Timo, Shapiro, Alexander I., Sowmya, Krishnamurthy, Xiang, Maosheng, Yu, Jie, Zhang, Jinghua, Zhang, Xianfei   +10 more
core   +1 more source

Solar differential rotation in the period 1964 - 2016 determined by the Kanzelh\"ohe data set

, 2017
The main aim of this work is to determine the solar differential rotation by tracing sunspot groups during the period 1964-2016, using the Kanzelh\"ohe Observatory for Solar and Environmental Research (KSO) sunspot drawings and white light images.
Beljan, I. Poljančić, Brajša, R., Hanslmeier, A., Hržina, D., Jurdana-Šepić, R., Pötzi, W., Ruždjak, D., Skokić, I., Sudar, D., Veronig, A., Wöhl, H.   +10 more
core   +1 more source

Cathodic Cage Plasma Deposition of Nanostructured Cu–Fe–Se Coatings on Poly(methyl Methacrylate)

Advanced Engineering Materials, EarlyView.
Nanostructured Cu–Fe–Se coatings are deposited on PMMA by a modified cathodic cage plasma process, enabling low‐temperature deposition on polymer substrates. A transition from discontinuous to compact morphology is observed with temperature, with optimal properties at 200°C, where improved CuFeSe2‐type bonding, lowest sheet resistance, and favorable ...
V. S. S. Sobrinho, M. Naeem, T. H. C. Costa, M. S. Libório, J. C. A. Queiroz, C. B. B. Luna, R. R. M. Sousa, P. S. Vieira, E. M. Araújo   +8 more
wiley   +1 more source

Dual‐Mode Film Based on Highly Scattering Nanofibers and Upcycled Chips‐Bags for Year‐Round Thermal Management

Advanced Functional Materials, EarlyView.
Intelligent radiative cooling devices, adaptable to various weather conditions, have the potential for year‐round energy savings. This study introduces a sustainable dual‐mode film made from polycaprolactone nanofibers and upcycled chip bags for effective thermal management.
Qimeng Song, Stefan Rettinger, Chengzhang Xu, Ulrich Mansfeld, Markus Retsch   +4 more
wiley   +1 more source

THE ASYMMETRIC DRIFT AND THE ROTATION CURVE OF THE GALAXY

Odessa Astronomical Publications, 2014
Asymmetric drift in the solar neighbourhood is studied by the means of the RAVE data. The asymmetric drift correction is applied to the SDSS data to measure the rotation curve of the Milky Way in the extended solar neighbourhood.
O. Golubov
doaj   +1 more source

Automatic detection and tracking of filaments for a solar feature database [PDF]

Annales Geophysicae, 2008
A new method for the automatic detection and tracking of solar filaments is presented. The method addresses the problems facing existing catalogs, such as the one developed recently in the frame of the European Grid of Solar Observations (EGSO ...
J. Aboudarham, I. Scholl, I. Scholl, N. Fuller, M. Fouesneau, M. Galametz, F. Gonon, A. Maire, Y. Leroy   +8 more
doaj   +1 more source

The Origin of Enhanced Activity in the Suns of M67

, 2009
We report the results of the analysis of high resolution photospheric line spectra obtained with the UVES instrument on the VLT for a sample of 15 solar-type stars selected from a recent survey of the distribution of H and K chromospheric line strengths ...
A. Reiners, Allain, Barnes, Bouvier, Giampapa, Gray, Kurucz, Lockwood, M. S. Giampapa, Radick   +9 more
core   +1 more source

Solar Internal Rotation [PDF]

Symposium - International Astronomical Union, 1998
With the flood of high quality helioseismic data from the instruments on the SOHO spacecraft (MDI/VIRGO/GOLF) and ground based instruments (e.g. GONG, LOWL, BiSON, IRIS, MWO-CrAO and TON) we have been able to get increasingly detailed information on the rotation and other large scale flows in the solar interior.Here we will discuss some of the ...
openaire   +1 more source