The Helioseismic Search for Emerging Flux
Abstract
Arguably considered the holy grail of local helioseismology is the detection of emerging flux before its appearance as a sunspot or magnetic region on the photosphere. After almost two decades of searching, this goal remains elusive and, at best, controversial. Helioseismic exploration is increasingly assisted by numerical simulations of rising flux which offer predictions of the magnitude and type of signatures, and also by computational wave propagation models which can validate and help improve the methods. We discuss some of these developments as well as results of a recent survey, carried out at NWRA, of approximately one hundred emerging active regions observed with the GONG network. A new survey, carried out in collaboration with colleagues at the Max Planck Institute for Solar System Research and made using the observations obtained by the HMI instrument on SDO is under way. This talk reviews work at NWRA which has been funded through the NASA Living with a Star program and currently though the NASA Solar and Heliospheric SR&T program (contract NNH12CF23C) and Heliophysics GI program (contract NNH12CF68C).
- Publication:
-
SDO-3: Exploring the Network of SDO Science
- Pub Date:
- March 2013
- Bibcode:
- 2013enss.confE..64B
- Keywords:
-
- SDO;
- SDO-7;
- SDO 7;
- SDO Workshop;
- 2013 LWS/SDO Science Workshop;
- Solar Dynamic Observatory