Zobrazeno 1 - 10
of 94
pro vyhledávání: '"Bertello, Luca"'
Autor:
Penza, Valentina, Bertello, Luca, Cantoresi, Matteo, Criscuoli, Serena, Lucaferri, Lorenza, Reda, Raffaele, Ulzega, Simone, Berrilli, Francesco
Solar irradiance variations across various timescales, from minutes to centuries, represents a potential natural driver of past regional and global climate cold phases. To accurately assess the Sun's effect on climate, particularly during periods of
Externí odkaz:
http://arxiv.org/abs/2409.12648
Autor:
Hughes, Anna L. H., Purdy, Timothy J., Wentzel, Thomas M., Oien, Niles, Bertello, Luca, Tripathy, Sushant, Kholikov, Shukur, Jain, Kiran, Petrie, Gordon, Branston, Detrick D., Gosain, Sanjay, Pevtsov, Alexei A.
This report provides a brief summary of the properties of new cameras selected for NSF's Global Oscillations Network Group (GONG) facilities operated by the NSO Integrated Synoptic Program (NISP). These camera replacements are part of a GONG refurbis
Externí odkaz:
http://arxiv.org/abs/2301.12387
A combined uniform and long-time series of Ca-K images from the Kodaikanal Observatory (KO), Mount Wilson Observatory (MWO), and Mauna Loa Solar Observatory (MLSO) were used to identify and study the Ca-K small-scale features and their solar cycle va
Externí odkaz:
http://arxiv.org/abs/2301.07350
Autor:
Sachdeva, Nishtha, Manchester, Ward B, Sokolov, Igor, Huang, Zhenguang, Pevtsov, Alexander, Bertello, Luca, Pevtsov, Alexei A., Toth, Gabor, van der Holst, Bart
We explore model performance for the Alfven Wave Solar atmosphere Model (AWSoM) with near-real-time (NRT) synoptic maps of the photospheric vector magnetic field. These maps, produced by assimilating data from the Helioseismic Magnetic Imager (HMI) o
Externí odkaz:
http://arxiv.org/abs/2212.05138
Autor:
Reda, Raffaele, Giovannelli, Luca, Alberti, Tommaso, Berrilli, Francesco, Bertello, Luca, Del Moro, Dario, Di Mauro, Maria Pia, Giobbi, Piermarco, Penza, Valentina
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 2023
The Earth's magnetosphere extension is controlled by the solar activity level via solar wind properties. Understanding such a relation in the Solar System is important for predicting also the condition of exoplanetary magnetospheres near Sun-like sta
Externí odkaz:
http://arxiv.org/abs/2203.01554
Solar variability occurs over a broad range of spatial and temporal scales, from the Sun's brightening over its lifetime to the fluctuations commonly associated with magnetic activity over minutes to years. The latter activity includes most prominent
Externí odkaz:
http://arxiv.org/abs/2111.02928
Autor:
Pevtsov, Alexei A., Liu, Yang, Virtanen, Ilpo, Bertello, Luca, Mursula, Kalevi, Leka, K. D., Hughes, Anna L. H.
Full disk vector magnetic fields are used widely for developing better understanding of large-scale structure, morphology, and patterns of the solar magnetic field. The data are also important for modeling various solar phenomena. However, observatio
Externí odkaz:
http://arxiv.org/abs/2101.07204
Current solar wind prediction is based on the Wang & Sheeley empirical relationship between the solar wind speed observed at 1 AU and the rate of magnetic flux tube expansion (FTE) between the photosphere and the inner corona, where FTE is computed b
Externí odkaz:
http://arxiv.org/abs/2008.06538
Akademický článek
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Autor:
Pevtsov, Alexei A., Tlatova, Kseniya A., Pevtsov, Alexander A., Heikkinen, Elina, Virtanen, Ilpo, Karachik, Nina V., Bertello, Luca, Tlatov, Andrey G., Ulrich, Roger, Mursula, Kalevi
Publikováno v:
A&A 628, A103 (2019)
Context. Systematic observations of magnetic field strength and polarity in sunspots began at Mount Wilson Observatory (MWO), USA in early 1917. Except for a few brief interruptions, this historical dataset continues till present. Aims. The sunspot f
Externí odkaz:
http://arxiv.org/abs/1907.06492