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# Long-term correlations in solar proxies and solar wind parameters

Reda, Raffaele; Alberti, Tommaso; Berrilli, Francesco; Giobbi, Piermarco; Giovannelli, Luca; Penza, Valentina

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<dc:creator>Reda, Raffaele</dc:creator>
<dc:creator>Alberti, Tommaso</dc:creator>
<dc:creator>Berrilli, Francesco</dc:creator>
<dc:creator>Giobbi, Piermarco</dc:creator>
<dc:creator>Giovannelli, Luca</dc:creator>
<dc:creator>Penza, Valentina</dc:creator>
<dc:date>2021-02-26</dc:date>
<dc:description>Solar variability related to its magnetic activity can be quantified by using synthetic indices (e.g. sunspots number) or physical ones (e.g. chromospheric proxies). In order to connect the long-term solar activity variations to solar wind properties, we use Ca II K index and solar wind OMNI data in the time interval between 1965 and 2019, which almost entirely cover the last 5 solar cycles. A time lag in the correlation between the parameters is found. This time shift seems to show a temporal evolution over the different solar cycles. The advantage to use a chromospheric proxy opens the possibility to extend the relation found for the Sun to link stellar variability and stellar wind properties in Sun-like stars.</dc:description>
<dc:identifier>https://zenodo.org/record/4565517</dc:identifier>
<dc:identifier>10.5281/zenodo.4565517</dc:identifier>
<dc:identifier>oai:zenodo.org:4565517</dc:identifier>
<dc:relation>doi:10.5281/zenodo.4565516</dc:relation>
<dc:relation>url:https://zenodo.org/communities/coolstars20half</dc:relation>
<dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
<dc:title>Long-term correlations in solar proxies and solar wind parameters</dc:title>
<dc:type>info:eu-repo/semantics/other</dc:type>
<dc:type>video</dc:type>
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