182 citations · 2k across the 93 of their papers we have counts for
6 papers · 1 filter
Testing Helioseismic-Holography Inversions for Supergranular Flows Using Synthetic Data
D. E. Dombroski, A. C. Birch, D. C. Braun +1
Supergranulation is one of the most visible length scales of solar convection and has been studied extensively by local helioseismology. We use synthetic data computed with the Sei…
The influence of noise sources on cross-correlation amplitudes
Shravan M. Hanasoge
We use analytical examples and asymptotic forms to examine the mathematical structure and physical meaning of the seismic cross correlation measurement. We show that in general, cr…
Subsurface Supergranular Vertical Flows as Measured Using Large Distance Separations in Time-Distance Helioseismology
Thomas L. Duvall, Shravan M. Hanasoge
As large--distance rays (say, 10\,-\,) approach the solar surface approximately vertically, travel times measured from surface pairs for these large separations are most…
Seismic probes of solar interior magnetic structure
Shravan Hanasoge, Aaron Birch, Laurent Gizon +1
Sunspots are prominent manifestations of solar magnetoconvection and imaging their subsurface structure is an outstanding problem of wide physical importance. Travel times of seism…
Anomalously Weak Solar Convection
Shravan Hanasoge, Thomas L. Duvall, Katepalli R. Sreenivasan
Convection in the solar interior is thought to comprise structures on a spectrum of scales. This conclusion emerges from phenomenological studies and numerical simulations, though…
Detectable seismic consequences of the interaction of a primordial black hole with Earth
Yang Luo, Shravan Hanasoge, Jeroen Tromp +1
Galaxies observed today are likely to have evolved from density perturbations in the early universe. Perturbations that exceeded some critical threshold are conjectured to have und…