Doug Braun's
Current Research and Publications

Contact information:

Douglas C. Braun
NorthWest Research Associates
Colorado Research Associates (CoRA) Division
3380 Mitchell Lane
Boulder CO 80301-5410 USA

phone: 303 415 9701 x226
fax: 303 415 9702

email: dbraun at cora.nwra.com

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• holography lecture and hands-on material for 2005 Summerschool in Helioseismology. The web site, and complete set of material, for the school is available here.

• Helioseismic Holography

• Far-side Imaging of the Sun

• The First Seismic Images of the Solar Interior and Far Side from the GONG+ Network

• Phase-correlation depth-diagnostics of active region NOAA 9636: A comparison of SOI-MDI and GONG+ network observations.

• MDI farside imaging site

• GONG farside imaging site

• Survey of seismic emission from flares, by Besliu, Donea and Cally

Peer-reviewed publications

Note: Lists only publications since 1999. For a complete list please download my vita

• Braun, D. C., and Birch, A. C. 2008, "Surface-focused Seismic Holography of Sunspots: I. Observations," Solar Phys. , accepted preprint (pdf)

• Schunker, H., Braun, D. C., Lindsey. C., and Cally, P.S. 2008, "Physical Properties of Wave Motion in Inclined Magnetic Fields Within Sunspot Penumbrae," Solar Phys. , accepted preprint (pdf)

• Braun, D. C., Birch, A. C., Benson, D., Stein, R. F., and Norlund, A. 2007, "Helioseismic Holography of Simulated Solar Convection and Prospects for the Detection of Small-Scale Subsurface Flows," ApJ , 669, 1395 reprint (pdf)

• Schunker, H., Braun, D. C. and Cally, P. S. 2007, "Surface magnetic field effects in local helioseismology," AN, 328, 292 preprint (pdf)

• Braun, D. C. and Birch, A. C. 2006, "Observed Frequency Variations of Solar p-Mode Travel Times as Evidence for Surface Effects in Sunspot Seismology," ApJ, 647, L187 reprint (pdf)

• Crouch, A.D, Cally, P.S., Braun, D. C., and Desjardins, M. 2005, "Genetic magnetohelioseismology with Hankel analysis data," M.N.R.A.S., 363, 1188. reprint (pdf)

• Schunker, H., Braun, D. C., Cally, P.S., and Lindsey, C. 2005, "Local Helioseismology of Inclined Magnetic Fields and the Showerglass Effect," Astrophys J., 621, L149. reprint (pdf)

• Lindsey, C. and Braun, D. C. 2005, "The Acoustic Showerglass I. Seismic Diagnostics of Photospheric Magnetic Fields," Astrophys J., 620, 1107. reprint

• Lindsey, C. and Braun, D. C. 2005, "The Acoustic Showerglass II. Imaging Active Region Subphotospheres," Astrophys J., 620, 1118. reprint

• Lindsey, C. and Braun, D. C. 2004, "Principles of Seismic Holography for Diagnostics of the Shallow Subphotosphere," Astrophys J. Suppl., 155, 209. reprint

• Cally, P.S., Crouch, A.D, and Braun, D. C. 2003, "Probing Sunspot Magnetic Fields with p-Mode Absorption and Phase Shift Data," M.N.R.A.S., 346, 381. reprint (pdf) , ADS Abstract

• Braun, D. C. and Lindsey, C. 2001, "Seismic Imaging of the Far Hemisphere of the Sun," Astrophys. J., 560, L189. reprint (pdf) , ADS Abstract

• Lindsey, C. and Braun, D. C. 2000, "Seismic Images of the Far Side of the Sun," Science, 287, 1799. reprint ADS Abstract

• Braun, D. C. and Lindsey, C. 2000, "Helioseismic Holography of Active-Region Subphotospheres," Solar Physics, 192, 285. reprint ADS Abstract

• Lindsey, C. and Braun, D. C. 2000, "Basic Principles of Solar Acoustic Holography," Solar Physics, 192, 261. reprint ADS Abstract

• Braun, D. C. and Lindsey, C. 2000, "Phase-sensitive Holography of Solar Activity," Solar Physics, 192, 307. reprint ADS Abstract

• Donea, A.-C., Lindsey, C., and Braun, D. C. 2000, "Stochastic Seismic Emission from Acoustic Glories and the Quiet Sun," Solar Physics, 192, 321. reprint ADS Abstract

• Donea, A.-C., Braun D. C. and Lindsey, C. 1999, "Seismic Images of a Solar Flare," Astrophys. J., 513, L143. ADS Abstract

• Braun D. C. and Lindsey, C. 1999, "Helioseismic Images of an Active Region Complex," Astrophys. J., 513, L79. ADS Abstract

• Lindsey, C. and Braun, D. C. 1999, "Chromatic Holography of the Sunspot Acoustic Environment," Astrophys. J., 510, 494. ADS Abstract

• Schunker, H., Braun, D.C., Cally, P.S., and Lindsey, C. 2006, "Behaviour of Acoustic Waves in Sunspots," ASP Conf.~Ser. 354: Solar MHD Theory and Observations: A High Spatial Resolution Perspective, 354, 244. reprint

• Crouch, A.P., Cally, P.S., Charbonneau, P., Braun, D.C., Desjardins, M. 2006, "The Role of MHD Mode Conversion in Sunspot Seismology," ASP Conf.~Ser. 354: Solar MHD Theory and Observations: A High Spatial Resolution Perspective, 354, 161. proceedings

• Schunker, H., Braun, D.~C., Cally, P.~S., and Lindsey, C. 2006, "The interaction between acoustic waves and inclined magnetic fields near the beta~1 layer, "Highlights of Recent Progress in the Seismology of the Sun and Sun-Like Stars, 26th meeting of the IAU, Joint Discussion 17, 23 August 2006, Prague, Czech Republic, JD17, #16 17.

• Gonzalez Hernandez, I., Hill, F., Lindsey, C., Braun, D., Scherrere, P. and Hanasoge, S.M. 2006,"Farside Helioseismic Holography: Recent Advances," proceedings and poster and presented at the SOHO 18/GONG 2006/Helas 1 Meeting in Sehffield, U.K., 2006 Aug.

• Komm, R., Braun, D., Birch, A., and the GONG Team 2006,"Comparison of subsurface flows obtained with acoustic holography and ring analysis," poster presented at the SOHO 18/GONG 2006/Helas 1 Meeting in Sehffield, U.K., 2006 Aug.

• Braun, D.C., Birch, A., and Lindsey, C. 2004, "Local Helioseismology of Near-surface Flows," in Proceedings of SOHO 14 / GONG+ 2004. Helio- and Asteroseismology: Towards a Golden Future, , reprint

• Schunker, H., Braun, D.C., Lindsey, C., and Cally, P.S. 2004, "Local Helioseismology of Inclined Magnetic Fields and the Showerglass Effect," in Proceedings of SOHO 14 / GONG+ 2004. Helio- and Asteroseismology: Towards a Golden Future, , reprint

• Lindsey, C., and Braun, D.C. 2004, "The Penumbral Acoustic Anomaly," in Proceedings of SOHO 14 / GONG+ 2004. Helio- and Asteroseismology: Towards a Golden Future, , reprint

• Braun D.C., Lindsey, C., and Birch, A.C. 2004, "Local Helioseismology of Solar Dynamics," Bul. Amer. Astron. Soc. , 36, 757. abstract

• Lindsey, C. and Braun D.C. 2004, "The Acoustic Showerglass and Diagnostics of Active Region Subphotospheres," Bul. Amer. Astron. Soc. , 36, 757. abstract

• Braun D.C. 2004, "Probing the Interior and Farside of the Sun (invited talk)," Connecting our Dynamic Sun to the Heliosphere and Geospace: A Living With a Star Workshop, Boulder, CO March 23-26, 2004 ftp to powerpoint and movie files

• Braun D.C.,Donaldson-Hanna, K., Harvey, J., Howe, R., Leibacher, J., Lindsey, C., Malanushenko, A., and Sudol, J. 2004, "GONG Near-Realtime Active Region Imagery as a Pathfinder for LWS/SDO," Connecting our Dynamic Sun to the Heliosphere and Geospace: A Living With a Star Workshop, Boulder, CO March 23-26, 2004 ftp to poster

• Lindsey, C. and Braun D.C. 2004, "The Acoustic Showerglass," Local Helioseismology Comparison (LoHCo) Workshop 7, Tucson AZ Feb 10-11, 2004 powerpoint file

• Braun D.C. 2004, "Holography of Solar Dynamics," Local Helioseismology Comparison (LoHCo) Workshop 7, Tucson AZ Feb 10-11, 2004 powerpoint file

• Lindsey, C. and Braun, D.C. 2003, "Computational Seismic Holography of Active Region Subphotospheres," Bul. Amer. Astron. Soc. , 35, 823. ADS abstract

• Braun, D.C. and Lindsey, C. 2003, "Helioseismic Imaging of the Farside and the Interior," in Proceedings of SOHO 12 / GONG+ 2002. Local and Global Helioseismology: the Present and Future, ed. H. Sawaya-Lacoste, ESA SP-517 , (Noordwijk: ESA), 15. , preprint ADS abstract

• Lindsey, C. Braun, D.C. 2003, "The Showerglass Effect in Seismic Diagnostics of Active Region Subphotospheres," in Proceedings of SOHO 12 / GONG+ 2002. Local and Global Helioseismology: the Present and Future, ed. H. Sawaya-Lacoste, ESA SP-517 , (Noordwijk: ESA), 23. , preprint ADS abstract

• Lindsey, C. and Braun D. C. 2002, "Computational Seismic Holography of the Deep Interior and Far Surface of the Sun," Bul. Amer. Astron. Soc. , 34, 780. ADS abstract.

• Braun, D.C. and Lindsey, C. 2002, "The First Seismic Images of the Solar Interior and Far Side from the GONG+ Network," Bul. Amer. Astron. Soc. , 34, 791. AAS press release , ADS abstract.

• Barban, C., Howe, R., Hill, F., Komm, R. W., Leibacher, J., Toner, C., Bogart, R., Braun D., Haber, D., Hindman, B., and Lindsey, C. 2002, "MDI and GONG Inferences of the Changing Solar Interior," in SOHO 11 Symposium, From Solar Min to Max: Half a Solar Cycle with SOHO, ed. A. Wilson, ESA SP-508,(Nordwijk: ESA), 55. ADS abstract.

• Braun, D.C. 2002, "Helioseismological observations of active regions," invited talk at ITP Conference on Observational Challenges for the Next Decade of Solar Magnetohydrodynamics, Institute for Theoretical Astrophysics, UCSB. ITP site containing audio, video and slides

• Braun D. C. and Lindsey, C. 2002, "Seismic Forecasting of Solar Activity" in Highlights of Astronomy, Vol 12 as presented at the XXIVth General Assembly of the IAU-2000 (Manchester, UK, 7-18 August 2000) ed. H. Rickman, (San Francisco: Astronomical Society of the Pacific), 378. preprint , ADS abstract.

• Braun D. C. 2001, "Progress in Helioseismic Holography," Eos. Trans. AGU (82)20, S384. ADS abstract.

• Lindsey, C. and Braun D. C. 2001, "Prospects for Helioseismic Holography in the Deep Solar Interior," Eos. Trans. AGU (82)20, S384. ADS abstract.

• Braun D. C. and Lindsey, C. 2001, "Seismic Holography of the Solar Interior and Far Side" in Proceedings of IAU Symposium 203, Recent Insights into the Physics of the Sun and Heliosphere - Highlights from SOHO and Other Space Missions, eds. P. Brekke, B. Fleck, and J. B. Gurman, (San Francisco: Astronomical Society of the Pacific), 167. reprint , ADS abstract.

• Lindsey, C. and Braun, D. C. 2000, "Prospects for Deep Interior Helioseismic Holography," The full poster which was presented at the IAU Symposium 203 in Manchester, U.K., August 2000.

• Braun D. C. and Lindsey, C. 2000, "Seismic Imaging of the Far Side and Interior of the Sun," Bul. Amer. Astron. Soc. , 32, 831. full poster , individual figures , ADS abstract.

• Lindsey, C. and Braun D. C. 2000, "Seismic Holography of the Deep Solar Interior," Bul. Amer. Astron. Soc. , 32 , 836. ADS abstract

• Braun D. C. 1999, "New Results from Helioseismic Holography," Bul. Amer. Astron. Soc. , 31 , 882. ADS abstract

• Braun D. C. and Lindsey, C. 1999, "Phase-Sensitive Holography of Acoustic Moats," Bul. Amer. Astron. Soc. , 31 , 913. ADS abstract