Fast magnetoacoustic waves and magnetic field measurements in the solar corona with the Low Frequency Array
Tuesday, December 4, 2018 - 09:50
in Astronomy & Space
Fast magnetoacoustic wave trains are a promising seismological probe of the sun's corona, revealing the magnetic connectivity and providing an estimation of the absolute value of the coronal magnetic field. Low-frequency radio observations allow for the detection of fast wave trains in middle and upper corona, above the field-of-view of EUV imagers and spectrographs, via the modulation of the radio emission by the variations of the electron concentration.