Presentation Open Access

A new seismic diagnostics of stellar activity cycles

Valeriy Vasilyev

JSON-LD ( Export

  "description": "<p>&nbsp;Magnetic activity affects the observed properties of solar p modes:<br>\nmode frequencies and linewidths increase with solar activity. Using VIRGO/SPM<br>\ndata from solar cycles 23 and 24 we show that solar-cycle variations are<br>\nmeasurable in the temporal autocorrelation function of the p modes. Following<br>\na method developed for local helioseismology, we measure the p-mode travel<br>\ntimes for multiple skips and propose to average these to enhance the<br>\nsignal-to-noise ratio. This method is robust to noise, simpler to implement<br>\nthan peak bagging in the frequency domain, and promising for asteroseismology<br>\napplications. We estimate that the activity cycles of Sun-like stars may be<br>\ndetectable in long photometric time series.</p>", 
  "license": "", 
  "creator": [
      "@type": "Person", 
      "name": "Valeriy Vasilyev"
  "url": "", 
  "datePublished": "2021-10-18", 
  "@context": "", 
  "identifier": "", 
  "@id": "", 
  "@type": "PresentationDigitalDocument", 
  "name": "A new seismic diagnostics of  stellar activity cycles"
All versions This version
Views 7454
Downloads 4019
Data volume 91.8 MB43.0 MB
Unique views 7053
Unique downloads 3416


Cite as