Publications of Aaron Birch

Schou, J.; Birch, A.: Estimating the nonstructural component of the helioseismic surface term using hydrodynamic simulations. Astronomy and Astrophysics 638, A51 (2020)

Schunker, H.; Baumgartner, C.; Birch, A.; Cameron, R. H.; Braun, D.C.; Gizon, L.: Average motion of emerging solar active region polarities: II. Joy's law. Astronomy and Astrophysics 640, A116 (2020)

Birch, A.; Schunker, H.; Braun, D. C.; Gizon, L.: Average surface flows before the formation of solar active regions and their relationship to the supergranulation pattern. Astronomy and Astrophysics 628, A37 (2019)

Liang, Z.-C.; Gizon, L.; Birch, A.; Duvall, T.: Time-distance helioseismology of solar Rossby waves. Astronomy and Astrophysics 626, A3 (2019)

Schunker, H.; Birch, A.; Cameron, R. H.; Braun, D. C.; Gizon, L.; Burston, R.: Average motion of emerging solar active region polarities: I. Two phases of emergence. Astronomy and Astrophysics 625, A53 (2019)

DeGrave, K.; Braun, D. C.; Birch, A.; Crouch, A. D.; Javornik, B.: Validating Forward Modeling and Inversions of Helioseismic Holography Measurements. The Astrophysical Journal 863 (1), 34 (2018)

Gizon, L.; Fournier, D.; Yang, D.; Birch, A.; Barucq, H.: Signal and noise in helioseismic holography. Astronomy and Astrophysics 620, A136 (2018)

Langfellner, J.; Birch, A.; Gizon, L.: Evolution and wave-like properties of the average solar supergranule. Astronomy and Astrophysics 617, A97 (2018)

Liang, Z.-C.; Gizon, L.; Birch, A.; Duvall, T.; Rajaguru, S. P.: Solar meridional circulation from twenty-one years of SOHO/MDI and SDO/HMI observations: Helioseismic travel times and forward modeling in the ray approximation. Astronomy and Astrophysics 619, A99 (2018)

Löptien, B.; Gizon, L.; Birch, A.; Schou, J.; Proxauf, B.; Duvall, T.; Bogart, R. S.; Christensen, U. R.: Global-scale equatorial Rossby waves as an essential component of solar internal dynamics. Nature astronomy 2, pp. 568 - 573 (2018)

Bhattacharya, J.; Hanasoge, S. M.; Birch, A.; Gizon, L.: Recovery of subsurface profiles of supergranular flows via iterative inversion of synthetic travel times. Astronomy and Astrophysics 607, A 129 (2017)

Felipe, T.; Braun, D. C.; Birch, A. C.: Helioseismic holography of simulated sunspots: dependence of the travel time on magnetic field strength and Wilson depression. Astronomy and Astrophysics 604, A126 (2017)

Gizon, L.; Barucq, H.; Duruflé, M.; Hanson, C. S.; Leguèbe, M.; Birch, A. C.; Chabassier, J.; Fournier, D.; Hohage, T.; Papini, E.: Computational helioseismology in the frequency domain: acoustic waves in axisymmetric solar models with flows. Astronomy and Astrophysics 600, A35 (2017)

Liang, Z.-C.; Birch, A. C.; Duvall, T.; Gizon, L.; Schou, J.: Comparison of acoustic travel-time measurements of solar meridional circulation from SDO/HMI and SOHO/MDI. Astronomy and Astrophysics 601, A46 (2017)

Löptien, B.; Birch, A. C.; Duvall Jr., T. L.; Gizon, L.; Proxauf, B.; Schou, J.: Measuring solar active region inflows with local correlation tracking of granulation. Astronomy and Astrophysics 606, A28 (2017)

Nagashima, K.; Fournier, D.; Birch, A. C.; Gizon, L.: The amplitude of the cross-covariance function of solar oscillations as a diagnostic tool for wave attenuation and geometrical spreading. Astronomy and Astrophysics 599, A111 (2017)

Birch, A. C.; Schunker, H.; Braun, D. C.; Cameron, R.; Gizon, L.; Löptien, B.; Rempel, M.: A low upper limit on the subsurface rise speed of solar active regions. Science Advances 2, p. e1600557 - e1600557 (2016)

Böning, V. G. A.; Roth, M.; Zima, W.; Birch, A. C.; Gizon, L.: Sensitivity Kernels for Flows in Time-Distance Helioseismology: Extension to Spherical Geometry. Astrophysical Journal 824, 49 (2016)

Felipe, T.; Braun, D. C.; Crouch, A. D.; Birch, A. C.: Helioseismic Holography of Simulated Sunspots: Magnetic and Thermal Contributions to Travel Times. Astrophysical Journal 829, 67 (2016)

Gizon, L.; Sekii, T.; Takata, M.; Kurtz, D. W.; Shibahashi, H.; Bazot, M.; Benomar, O.; Birch, A. C.; Sreenivasan, K. R.: Shape of a slowly rotating star measured by asteroseismology. Science Advances 2 (11), e1601777 (2016)