Abstract
The development of solar acoustic holography has opened a major new diagnostic avenue in local helioseismology. It has revealed ‘acoustic moats’ surrounding sunspots, ‘acoustic glories’ surrounding complex active regions, and ‘acoustic condensations’ suggesting the existence of significant seismic anomalies up to 20 Mm beneath active-region photospheres. Phase-sensitive seismic holography is now yielding high-resolution maps of sound travel-time anomalies caused by magnetic forces in the immediate subphotosphere, apparent thermal enhancements in acoustic moats, and Doppler signatures of subsurface flows. It has given us the first seismic images of a solar flare, and has uncovered a remarkable anomaly in the statistical distribution of seismic emission from acoustic glories. Seismic holography will probably give us the means for early detection of large active regions on the far-surface of the Sun, and possibly of deep subsurface activity as well. This powerful diagnostic now promises a new insight into the hydromechanical and thermal environments of the solar interior in the local perspective.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsPreview
Unable to display preview. Download preview PDF.
References
Braun, D. C.: 1995, Astrophys. J. 451, 859.
Braun, D. C.: 1997, Astrophys. J. 487, 447.
Braun, D. C. and Lindsey, C.: 1999, Astrophys. J. 513, L79.
Braun, D. C. and Lindsey, C.: 2000, Solar Phys. 192, 307 (this issue).
Braun, D. C., Duvall, T. L. Jr., and LaBonte, B. J.: 1988, Astrophys. J. 335, 1015.
Braun, D. C., Lindsey, C., Fan, Y., and Jefferies, S. M.: 1992, Astrophys. J. 392, 739.
Braun, D. C., Lindsey, C., Fan, Y., and Fagan, M.: 1998, Astrophys. J. 502, 968.
Brickhouse, N. S. and LaBonte, B. J.: 1988, Solar Phys. 115, 43.
Brown, T. M., Bogdan, T. J., Lites, B. W., and Thomas, J. H.: 1992, Astrophys. J. 394, L65.
Cally, P. S.: 2000, Solar Phys. 192, 395 (this issue).
Cally, P. S. and Bogdan, T. J.: 1997, Astrophys. J. 486, L67.
Chang, H.-K., Chou, D.-Y., LaBonte, B., and the TON Team: 1997, Nature 389, 825.
Chen, H.-R., Chou, D.-Y., Chang, H.-S., Sun, M. T., Yeh, S.-J., LaBonte, B., and the TON Team: 1998, Astrophys. J. 501, L139.
Donea, A.-C., Braun, D. C., and Lindsey, C.: 1999, Astrophys. J. 513, L143.
Donea, A.-C, Lindsey, C., and Braun, D. C.: 2000, Solar Phys. 192, 321 (this issue).
Duvall, T. L., Jr., Jefferies, S. M., Harvey, J. W., and Pomerantz, M. A.: 1993, Nature 362, 430.
Duvall T. L., Jr., D’Silva, S., Jefferies, S. M., Harvey, J. W., and Schou, J.: 1996, Nature 379, 235.
Fan, Y., Braun, D. C., and Chou D.-Y.: 1995, Astrophys. J. 451, 877.
Fox, P. A., Sofia, S. C., and Chan K. L.: 1991, Solar Phys. 135, 15.
Harvey, K. and Harvey, J.: 1973, Solar Phys. 28, 61.
Hindman, B. W. and Brown, T. M.: 1998, Astrophys. J. 504, 1029.
Jiménez-Reyes, S. J., Régulo, C., Pallé, P. L., and Roca Cortés, T.: 1998, Astron. Astrophys. 329, 1119.
Kosovichev, A. G. and Zharkova V. V.: 1998, Nature 393, 317.
Lindsey, C. and Braun, D. C.: 1990, Solar Phys. 126, 101.
Lindsey, C. and Braun, D. C.: 1997, Astrophys. J. 485, 895.
Lindsey, C. and Braun, D. C.: 1998a, Astrophys. J. 499, L99.
Lindsey, C. and Braun, D. C.: 1998b, Astrophys. J. 509, L129.
Lindsey, C. and Braun, D. C.: 1999, Astrophys. J. 510, 494.
Lindsey, C. and Braun, D. C.: 2000, Solar Phys. 192, 261 (this issue).
Lindsey, C., Braun, D. C., Jefferies, S. M., Woodard, M. F., Fan, Y., Gu, Y., and Redfield, S.: 1996, Astrophys. J. 470, 636.
Meyer, F., Schmidt, H. U., Weiss, N. O., and Wilson, P. R.: 1974, Monthly Notices Royal Astron. Soc. 169, 35
Nye, A., Bruning, D., and LaBonte, B. J.: 1988, Solar Phys. 115, 251.
Parker, E. N.: 1974, Solar Phys. 36, 249.
Rast, M., T., Fox, P. A., Lin, H., Lites, B. W., Meisner, R. W., and White, O. R.: 1999, Nature 401, 678.
Sheeley, N. R.: 1969, Solar Phys. 9, 347.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2000 Springer Science+Business Media Dordrecht
About this chapter
Cite this chapter
Braun, D.C., Lindsey, C. (2000). Helioseismic Holography of Active-Region Subphotospheres (Invited Review). In: Duvall, T.L., Harvey, J.W., Kosovichev, A.G., Švestka, Z. (eds) Helioseismic Diagnostics of Solar Convection and Activity. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-4377-6_18
Download citation
DOI: https://doi.org/10.1007/978-94-011-4377-6_18
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-5882-7
Online ISBN: 978-94-011-4377-6
eBook Packages: Springer Book Archive