Results 61 to 70 of about 429,319 (205)

What Can DKIST/DL-NIRSP Tell Us about Quiet-Sun Magnetism?

The Astrophysical Journal
Quiet-Sun regions cover most of the Sun's surface; their magnetic fields contribute significantly to solar chromospheric and coronal heating. However, characterizing the magnetic fields of the quiet Sun is challenging due to their weak polarization ...
Jiayi Liu, Xudong Sun, Peter W. Schuck, Sarah A. Jaeggli   +3 more
doaj   +1 more source

Basal Chromospheric Flux and Maunder Minimum-type Stars: The quiet-Sun Chromosphere as a Universal Phenomenon

, 2012
Aims: We demonstrate the universal character of the quiet-Sun chromosphere among inactive stars (solar-type and giants). By assessing the main physical processes, we shed new light on some common observational phenomena.
Baliunas, Brandenburg, Buchholz, Cuntz, Cuntz, Duncan, Hall, Hauschildt, J. H. M. M. Schmitt, Judge, Judge, Judge, Judge, K.-P. Schröder, Keppens, Konstantinova-Antova, M. Cuntz, M. I. Pérez Martínez, M. Mittag, Mittag, Pasquini, Pevtsov, Pérez Martínez, Rammacher, Riethmüller, Schmitt, Schrijver, Schrijver, Schrijver, Schrijver, Schröder, Schröder, Schröder, Schwarzschild, Strassmeier, Stȩpień, Suzuki, Vögler, White, Wöger   +39 more
core   +1 more source

Quiet-Sun Magnetic Fields at High Spatial Resolution

The Astrophysical Journal, 2002
We present spectro-polarimetric observations of Inter-Network magnetic fields at the solar disk center. A Fabry-Perot spectrometer was used to scan the two Fe I lines at 6301.5 A and 6302.5 A. High spatial resolution (0.5") magnetograms were obtained after speckle reconstruction.
Cerdena, I. D., Kneer, F., Almeida, J. S.   +2 more
openaire   +3 more sources

Quiet Sun Magnetism from ViSP Data Multiline Inversions Around 630.1 nm

The Astrophysical Journal
Quiet Sun magnetism plays an important role in the global energy balance of the solar atmosphere. The study of the magnetism of the quiet Sun has been a major effort in the last decades, and, as a result, very important advances in our knowledge have ...
J. C. Trelles Arjona
doaj   +1 more source

Global disturbance of Earth’s magnetosphere and its connection with space weather

Solar-Terrestrial Physics, 2020
This paper deals with extreme conditions of the global magnetosphere disturbance: very quiet and greatly disturbed, and their relationship with interplanetary medium parameters.
Kurazhkovskaya N.A.
doaj   +1 more source

First high-resolution look at the quiet Sun with ALMA at 3 mm [PDF]

, 2018
We present an overview of high resolution quiet Sun observations, from disk center to the limb, obtained with the Atacama Large mm and sub-mm Array (ALMA) at 3 mm. Seven quiet Sun regions were observed with resolution of up to 2.5" by 4.5".
Alissandrakis, C. E., Ayres, T., Bastian, T. S., De Pontieu, B., Hudson, H. S., Nindos, A., Patsourakos, S., Shimizu, T., Vial, J. -C., Warren, H., Wedemeyer, S., Yurchyshyn, V.   +11 more
core   +1 more source

On the signatures of flare-induced global waves in the Sun: GOLF and VIRGO observations

, 2017
Recently, several efforts have been made to identify the seismic signatures of flares and magnetic activity in the Sun and Sun-like stars. In this work, we have analyzed the disk-integrated velocity and intensity observations of the Sun obtained from the
Garcia, Rafael A., Jimenez, Antonio, Kumar, Brajesh, Mathur, Savita   +3 more
core   +1 more source

HOMOLOGOUS CYCLONES IN THE QUIET SUN

The Astrophysical Journal, 2014
Through observations with the Solar Dynamics Observatory Atmospheric Imaging Assembly (AIA) and Helioseismic and Magnetic Imager, we tracked one rotating network magnetic field (RNF) near the solar equator. It lasted for more than 100 hr, from 2013 February 23 to 28. During its evolution, three cyclones were found to be rooted in this structure.
Xinting Yu, Jun Zhang, Ting Li, Yuzong Zhang, Shuhong Yang   +4 more
openaire   +1 more source

Probing Upflowing Regions in the Quiet Sun and Coronal Holes. [PDF]

Sol Phys, 2021
Schwanitz C, Harra L, Raouafi NE, Sterling AC, Moreno Vacas A, Del Toro Iniesta JC, Orozco Suárez D, Hara H.   +7 more
europepmc   +1 more source

Strategy for the inversion of Hinode spectropolarimetric measurements in the quiet Sun

, 2007
In this paper we propose an inversion strategy for the analysis of spectropolarimetric measurements taken by {\em Hinode} in the quiet Sun. The spectropolarimeter of the Solar Optical Telescope aboard {\em Hinode} records the Stokes spectra of the \ion ...
Ichimoto, K., Iniesta, J. C. del Toro, Katsukawa, Y., Lites, B. W., Nagata, S., Rubio, L. R. Bellot, Shimizu, T., Shine, R. A., Suarez, D. Orozco, Suematsu, Y., Tarbell, T. D., Title, A. M., Tsuneta, S.   +12 more
core   +1 more source