Cristin-resultat-ID: 1947251
Sist endret: 20. oktober 2021, 11:52
Resultat
Poster
2021

Oscillations in small-scale bright features observed with ALMA

Bidragsytere:
  • Juan Camilo Guevara Gomez
  • Shahin Jafarzadeh og
  • Sven Wedemeyer

Presentasjon

Navn på arrangementet: Solar Orbiter School at Les Houches 2021
Dato fra: 6. april 2021
Dato til: 9. april 2021

Om resultatet

Poster
Publiseringsår: 2021

Beskrivelse Beskrivelse

Tittel

Oscillations in small-scale bright features observed with ALMA

Sammendrag

Small-scale chromospheric bright features in a plage/enhanced network are identified in solar ALMA observations. The features present oscillations in brightness temperature, size and horizontal velocity. Interestingly, an anti-correlation between brightness temperature and size is also evident, suggesting that these features might be associated to fast-sausage MHD modes. A statistical analysis is carried out to quantify the oscillation periods of the three quantities and the phase angles between the perturbations in temperature and size. The values found are in agreement with periods of high frequency oscillations in other layers of the solar atmosphere.

Bidragsytere

Juan Camilo Guevara Gomez

  • Tilknyttet:
    Forfatter
    ved Rosseland senter for solfysikk ved Universitetet i Oslo
Inaktiv cristin-person

Shahin Jafarzadeh

  • Tilknyttet:
    Forfatter
Aktiv cristin-person

Sven Wedemeyer

  • Tilknyttet:
    Forfatter
    ved Rosseland senter for solfysikk ved Universitetet i Oslo
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