Results 1 to 10 of about 429,299 (185)

Placing limits on long-term variations in quiet-Sun irradiance and their contribution to total solar irradiance and solar radiative forcing of climate. [PDF]

Proc Math Phys Eng Sci, 2020
Recent reconstructions of Total Solar Irradiance (TSI) postulate that quiet Sun variations could give significant changes to solar power input to Earth’s climate (radiative climate forcings of 0.7-1.1Wm-2 over 1700-2019) arising from changes in quiet-Sun
Lockwood M, Ball WT.
europepmc   +3 more sources

The Quiet-Sun Photosphere and Chromosphere [PDF]

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2011
The overall structure and the fine structure of the solar photosphere outside active regions are largely understood, except possibly important roles of a turbulent near-surface dynamo at its bottom, internal gravity waves at its top, and small-scale ...
Bel N., Caffau E., Carlsson M., Carlsson M., Carlsson M., de la Cruz Rodríguez J., Deubner F.-L., Frazier E. N., Greve A., Grossmann-Doerth U., Grossmann-Doerth U., Hansteen V. H., Holweger H., Judge P., Kneer F., Kurucz R. L., Lighthill M. J., Lockyer J. N., Menzel D. H., Nordlund A., Nordlund A., Noyes R. W., Rutten R. J., Rutten R. J., Rutten R. J., Rutten R. J., Rutten R. J., Rutten R. J., Schaffenberger W., Schwarzschild K., Spruit H. C., Stein R. F., Suematsu Y., Tziotziou K., Unruh Y. C., Ustyugov S. D.   +35 more
core   +3 more sources

Magnetic bright points in the quiet Sun [PDF]

The Astrophysical Journal, 2010
We present a visual determination of the number of bright points (BPs) existing in the quiet Sun, which are structures though to trace intense kG magnetic concentrations.
Asensio Ramos, Beckers, Bonet, Carlsson, Cattaneo, Centeno, de Wijn, Domínguez Cerdeña, Domínguez Cerdeña, Faurobert-Scholl, Harvey, Keller, Lin, Lites, Martínez González, Muller, Orozco Suárez, Petrovay, Pietarila Graham, Schrijver, Schüssler, Strous, Sánchez Almeida, Sánchez Almeida, Sánchez Almeida, Sánchez Almeida, Sánchez Almeida, van Ballegooijen, Viticchié   +28 more
core   +5 more sources

Magnetic loops in the quiet Sun [PDF]

The Astrophysical Journal, 2010
We investigate the fine structure of magnetic fields in the atmosphere of the quiet Sun. We use photospheric magnetic field measurements from {\sc Sunrise}/IMaX with unprecedented spatial resolution to extrapolate the photospheric magnetic field into ...
Alissandrakis, Barthol, Carlsson, Chae, Close, Danilovic, de Wijn, Martínez González, Martínez González, Martínez Pillet, Petrie, Sanchez Almeida, Schrijver, Solanki   +13 more
core   +3 more sources

Scaling laws of quiet-Sun coronal loops [PDF]

Advances in Space Research, 2019
We study a series of relations between physical parameters in coronal loops of the quiet Sun reconstructed by combining tomographic techniques and modeling of the coronal magnetic field. We use differential emission measure tomography (DEMT) to determine
Lloveras, Diego Gustavo, Lopez Fuentes, Marcelo Claudio, Mac Cormack, Cecilia, Mandrini, Cristina Hemilse, Poisson, Mariano, Vasquez, Alberto Marcos   +5 more
core   +4 more sources

Photospheric Swirls in a Quiet-Sun Region

The Astrophysical Journal
Swirl-shaped flow structures have been observed throughout the solar atmosphere, in both emission and absorption, at different altitudes and locations, and are believed to be associated with magnetic structures. However, the distribution patterns of such
Quan Xie, Jiajia Liu, Chris J. Nelson, Robert Erdélyi, Yuming Wang   +4 more
doaj   +4 more sources

Solar-cycle and Latitude Variations in the Internetwork Magnetism

The Astrophysical Journal, 2023
The importance of the quiet-Sun magnetism is that it is always there to a greater or lesser extent, being a constant provider of energy, independently of the solar cycle phase. The open questions about the quiet-Sun magnetism include those related to its
J. C. Trelles Arjona, M. J. Martínez González, B. Ruiz Cobo   +2 more
doaj   +1 more source

Study of Radio Transients from the Quiet Sun during an Extremely Quiet Time

The Astrophysical Journal, 2023
In this work, we study a class of recently discovered meter-wave solar transients referred to as Weak Impulsive Narrowband Quiet Sun Emission (WINQSEs).
Surajit Mondal, Divya Oberoi, Ayan Biswas   +2 more
doaj   +1 more source

A New Component from the Quiet Sun from Radio to Gamma Rays: Synchrotron Radiation by Galactic Cosmic-Ray Electrons

The Astrophysical Journal, 2023
The quiet Sun, i.e., in its nonflaring state or nonflaring regions, emits thermal radiation from radio to ultraviolet. The quiet Sun also produces nonthermal radiation observed in gamma rays due to interactions of Galactic cosmic rays (GCRs) with the ...
Elena Orlando, Vahe’ Petrosian, Andrew Strong   +2 more
doaj   +1 more source

Ubiquitous quiet-Sun jets [PDF]

Astronomy & Astrophysics, 2011
IMaX/Sunrise has recently reported the temporal evolution of highly dynamic and strongly Doppler shifted Stokes V signals in the quiet Sun. We attempt to identify the same quiet-Sun jets in the Hinode spectropolarimeter (SP) data set. We generate combinations of linear polarization magnetograms with blue- and redshifted far-wing circular polarization ...
Pillet, V. Martinez, Iniesta, J. C. del Toro, Noda, C. Quintero   +2 more
openaire   +2 more sources