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SUMMARY:Detection of the Evershed flow by the application of the SOM techn
 ique
DTSTART;VALUE=DATE-TIME:20230509T101500Z
DTEND;VALUE=DATE-TIME:20230509T103000Z
DTSTAMP;VALUE=DATE-TIME:20240704T115653Z
UID:indico-contribution-314@meetings.aip.de
DESCRIPTION:Speakers: Paolo Romano (INAF - Catania Astrophysical Observato
 ry)\nWe present the results obtained from applying the Self Organizing Map
  technique to a spectral dataset of monochromatic images acquired by the I
 nterferometric Bidimensional Spectropolarimeter at the Dunn Solar Telescop
 e\, along the Ca II 854.2 nm and Hα 656.28 nm lines. This technique allow
 ed us to segment the photospheric and chromospheric penumbra fine structur
 e\, revealing the presence of the Evershed flow in the chromosphere along 
 the portions of the penumbral filaments near the umbra. In addition\, the 
 flow velocity as a function of distance from the spot center in the periph
 eral regions of the super-penumbra was consistent with the inverse-Evershe
 d flow. These signatures\, along with slight differences in the chromosphe
 ric plasma velocities measured along the two spectral lines\, provided us 
 with the opportunity to combine the Evershed and inverse-Evershed flows in
  the same context\, in accordance with the uncombed model of the sunspot p
 enumbra.\n\nhttps://meetings.aip.de/event/24/contributions/314/
LOCATION:Haus H\, Telegrafenberg
URL:https://meetings.aip.de/event/24/contributions/314/
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