Presentation Open Access

A new seismic diagnostics of stellar activity cycles

Valeriy Vasilyev


MARC21 XML Export

<?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">&lt;p&gt;&amp;nbsp;Magnetic activity affects the observed properties of solar p modes:&lt;br&gt;
mode frequencies and linewidths increase with solar activity. Using VIRGO/SPM&lt;br&gt;
data from solar cycles 23 and 24 we show that solar-cycle variations are&lt;br&gt;
measurable in the temporal autocorrelation function of the p modes. Following&lt;br&gt;
a method developed for local helioseismology, we measure the p-mode travel&lt;br&gt;
times for multiple skips and propose to average these to enhance the&lt;br&gt;
signal-to-noise ratio. This method is robust to noise, simpler to implement&lt;br&gt;
than peak bagging in the frequency domain, and promising for asteroseismology&lt;br&gt;
applications. We estimate that the activity cycles of Sun-like stars may be&lt;br&gt;
detectable in long photometric time series.&lt;/p&gt;</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>
35
20
views
downloads
All versions This version
Views 3529
Downloads 2013
Data volume 45.7 MB29.4 MB
Unique views 3228
Unique downloads 1611

Share

Cite as