110 citations · 544 across the 15 of their papers we have counts for
15 papers
A flux-independent increase in outflows prior to the emergence of active regions on the Sun
Hannah Schunker, William Roland-Batty, Aaron C. Birch +3
Emerging active regions are associated with convective flows on the spatial scale and lifetimes of supergranules. To understand how these flows are involved in the formation of act…
Average motion of emerging solar active region polarities II: Joy's law
Hannah Schunker, Christian Baumgartner, Aaron C. Birch +3
The tilt of solar active regions described by Joy's law is essential for converting a toroidal field to a poloidal field in Babcock-Leighton dynamo models. In thin flux tube models…
Average motion of emerging solar active region polarities I: Two phases of emergence
Hannah Schunker, Aaron C. Birch, Robert H. Cameron +3
Our goal is to constrain models of active region formation by tracking the average motion of active region polarity pairs as they emerge onto the surface. We measured the motion of…
Validating Forward Modeling and Inversions of Helioseismic Holography Measurements
K. DeGrave, D. C. Braun, A. C. Birch +2
Here we use synthetic data to explore the performance of forward models and inverse methods for helioseismic holography. Specifically, this work presents the first comprehensive te…
SDO/HMI survey of emerging active regions for helioseismology
H. Schunker, D. C. Braun, A. C. Birch +2
Observations from the Solar Dynamics Observatory (SDO) have the potential for allowing the helioseismic study of the formation of hundreds of active regions, which would enable us…
Helioseismic holography of simulated sunspots: magnetic and thermal contributions to travel times
T. Felipe, D. C. Braun, A. D. Crouch +1
Wave propagation through sunspots involves conversion between waves of acoustic and magnetic character. In addition, the thermal structure of sunspots is very different than that o…