Presentation Open Access
Valeriy Vasilyev
<?xml version='1.0' encoding='UTF-8'?> <record xmlns="http://www.loc.gov/MARC21/slim"> <leader>00000nam##2200000uu#4500</leader> <controlfield tag="005">20211020014850.0</controlfield> <controlfield tag="001">5578911</controlfield> <datafield tag="856" ind1="4" ind2=" "> <subfield code="s">2260685</subfield> <subfield code="z">md5:e3c7a8d774012ff094e1c0223c5282ef</subfield> <subfield code="u">https://zenodo.org/record/5578911/files/vasilyev_valeriy_PLATO-SCI-CONF-2021_updated.pdf</subfield> </datafield> <datafield tag="542" ind1=" " ind2=" "> <subfield code="l">open</subfield> </datafield> <datafield tag="260" ind1=" " ind2=" "> <subfield code="c">2021-10-18</subfield> </datafield> <datafield tag="909" ind1="C" ind2="O"> <subfield code="p">openaire</subfield> <subfield code="p">user-plato2021</subfield> <subfield code="o">oai:zenodo.org:5578911</subfield> </datafield> <datafield tag="100" ind1=" " ind2=" "> <subfield code="a">Valeriy Vasilyev</subfield> </datafield> <datafield tag="245" ind1=" " ind2=" "> <subfield code="a">A new seismic diagnostics of stellar activity cycles</subfield> </datafield> <datafield tag="980" ind1=" " ind2=" "> <subfield code="a">user-plato2021</subfield> </datafield> <datafield tag="540" ind1=" " ind2=" "> <subfield code="u">https://creativecommons.org/licenses/by/4.0/legalcode</subfield> <subfield code="a">Creative Commons Attribution 4.0 International</subfield> </datafield> <datafield tag="650" ind1="1" ind2="7"> <subfield code="a">cc-by</subfield> <subfield code="2">opendefinition.org</subfield> </datafield> <datafield tag="520" ind1=" " ind2=" "> <subfield code="a"><p>&nbsp;Magnetic activity affects the observed properties of solar p modes:<br> mode frequencies and linewidths increase with solar activity. Using VIRGO/SPM<br> data from solar cycles 23 and 24 we show that solar-cycle variations are<br> measurable in the temporal autocorrelation function of the p modes. Following<br> a method developed for local helioseismology, we measure the p-mode travel<br> times for multiple skips and propose to average these to enhance the<br> signal-to-noise ratio. This method is robust to noise, simpler to implement<br> than peak bagging in the frequency domain, and promising for asteroseismology<br> applications. We estimate that the activity cycles of Sun-like stars may be<br> detectable in long photometric time series.</p></subfield> </datafield> <datafield tag="773" ind1=" " ind2=" "> <subfield code="n">doi</subfield> <subfield code="i">isVersionOf</subfield> <subfield code="a">10.5281/zenodo.5575744</subfield> </datafield> <datafield tag="024" ind1=" " ind2=" "> <subfield code="a">10.5281/zenodo.5578911</subfield> <subfield code="2">doi</subfield> </datafield> <datafield tag="980" ind1=" " ind2=" "> <subfield code="a">presentation</subfield> </datafield> </record>
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