Some new methods for approaching Meridional Circulation with Time-Distance Helioseismology
Affiliation
MPS Gottingen
Main category
Natural Sciences (Astrophysics and Astrononmy)
Abstract
1) By measuring the travel times for multiple skips, it should be
possible to remove center-to-limb effects in place rather than
referencing north-south times to east-west times.
2) Instead of using quadrants (4 sectors), it may be advantageous to
use more, like 12 or 16.
3) To learn more about center-to-limb effects, it is useful to measure
the temporal frequency dependence.
Tests of 1)-3) have been done using 1-year of HMI data and Thomas Hartlep's
simulations including a center-to-limb effect.
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