Doug Braun's
Current Research and Publications
Contact information:
Douglas C. Braun
NorthWest Research Associates, CoRA Office
3380 Mitchell Lane
Boulder CO 80301-5410 USA
phone: 303 415 9701 x226
fax: 303 415 9702
email: dbraun at nwra.com
A reasonably complete listing of publications may be found on the ADS by searching
for ORCID number 0000-0001-6840-2717. This
link takes you there directly. See publications table below for individual links to personal reprints.
Useful Links
Publications (since 1999 only)
See
here for a more complete listing on ADS. Links to personal reprints may be found directly below.
-
Braun, D. C., Birch, A. C., and Fan, Y. 2021,
"Probing the Solar Meridional Circulation using Fourier Legendre Decomposition,"
Ap J, 911, 15
[ reprint ]
-
Lindsey, C., Buitrago-Casas, J.C., Martínez Oliveros, J.C.; Braun, D., Martínez, A.D., Ortega, V.Q., Calvo-Mozo, B., and Donea, A.-C. 2020,
"Submerged Sources of Transient Acoustic Emission from Solar Flare,"
Ap J, 901, L9
[ reprint ]
-
Schunker, H., Baumgartner, C., Birch, A. C., Cameron, R. H., Braun, D. C., and Gizon, L. 2020,
"Average motion of emerging solar active region polarities. II. Joy's law,"
Astron Astrophys, 640, A116
[ reprint ]
-
Birch, A. C., Schunker, H., Braun, D. C., and Gizon, L. 2019,
"Average surface flows before the formation of solar active regions and their relationship to the supergranulation pattern,"
Astron Astrophys, 629, A37
[ reprint ]
-
Schunker, H., Birch, A. C., Cameron, R. H., Braun, D. C., Gizon, L., and Burston, R. 2019,
"Average motion of emerging solar active region polarities. I. Two phases of emergence,"
Astron Astrophys, 625, A53
[ reprint ]
-
Braun, D.C. 2019,
"Flows around Averaged Solar Active Regions,"
Ap J, 873, 94
[ reprint ]
-
DeGrave, K., Braun, D.C., Birch, A.C., Crouch, A., and Javornik, B. 2018,
"Validating Forward Modeling and Inversions of Helioseismic Holography Measurements,"
Ap J, 863, 34
[ pdf ]
-
Lindsey, C. and Braun, D.C. 2017,
"Seismic imaging of the Sun's far hemisphere and its applications in space weather forecasting",
Space Weather, 15, 761
[ link ]
[ pdf ]
-
Felipe, T., Braun, D.C., and Birch, A.C. 2017,
"Helioseismic holography of simulated sunspots: dependence of the travel time on magnetic field strength and Wilson depression."
Astron Astrophys, 604, A126
[ pdf ],
[ ADS Abstract ]
-
Gilchrist, S.A., Braun, D.C., and Barnes, G. 2016,
"A Fixed-point Scheme for the Numerical Construction of Magnetohydrostatic Atmospheres in Three Dimensions,"
Sol Phys, 291, 3583
[ pdf ]
-
Felipe, T., Braun, D.C., Crouch, A.D., and Birch, A.C. 2016,
"Helioseismic holography of simulated sunspots: magnetic and thermal contributions to travel times,"
Ap J, 829, 67
[ pdf ]
-
Schunker, H., Braun, D.C., Birch, A.C.,
Burston, R.B., and Gizon, L.
2016,
"SDO/HMI survey of emerging active regions for helioseismology,"
Astron Astrophys, 595, A107
[ preprint (pdf) ]
-
Birch, A.C., Schunker, H., Braun, D.C., Cameron, R., Gizon, L.,
Löptien, B., and Rempel, M. 2016,
"A low upper limit on the subsurface rise speed of solar active regions,"
Sci Adv, 2, 7
[ online article ]
[ pdf ]
[ MPS press release ]
-
Braun, D.C. 2016,
"A Helioseismic Survey of Near-surface Flows Around Active Regions and their Association with Flares,"
Ap J, 819, 2, 106
reprint (pdf)
-
Braun, D.C. 2015,
"Measurements with Local Helioseismology,"
in Extraterrestrial Seismology, Vincent C.H. Tong and Rafael A. Garcia (Eds.),
Cambridge University Press
reprint (pdf)
-
Barnes, G., Birch, A.C., Leka, KD, Braun, D.C. 2014,
"Helioseismology of Pre-emerging Active Regions. III. Statistical Analysis,"
Ap J, 786, 19
reprint (pdf)
-
González-Hernández, I., Diaz Alfaro, M.,
Jain, K., Tobiska, W.K., Braun, D.C., Hill, F. and Perez Hernandez, F. 2014,
"A Full Sun Magnetic Index from Helioseismology Inferences,"
Sol Phys., 289, 786
reprint (pdf)
-
Leka, K.D., Barnes, G., Birch, A.C., González-Hernández, I., Dunn, T.,
Javornik, B., and Braun, D. C. 2013,
"Helioseismology of Pre-emerging Active Regions. I. Overview, Data, and Target Selection Criteria,"
Ap J, 762, 130
reprint (pdf)
-
Birch, A.C., Braun, D.C., Leka, K. D., Barnes, G., and Javornik, B. 2013,
"Helioseismology of Pre-emerging Active Regions. II. Average Emergence Properties,"
Ap J, 762, 131
reprint (pdf)
-
Dombroski, D.E., Birch, A.C., Braun, D.C., and Hanasoge, S.M. 2013,
"Testing Helioseismic-Holography Inversions for Supergranular Flows Using Synthetic Data,"
Solar Phys., 282, 361
reprint (pdf)
-
Braun, D.C. 2012,
"Helioseismic Holography of an Artificial Submerged Sound Speed Perturbation and
Implications for the Detection of Pre-Emergence Signatures of Active Regions,"
Solar Phys., online first
reprint (pdf)
-
Felipe, T., Braun, D., Crouch, A., and Birch, A. 2012,
"Scattering of the f-mode by Small Magnetic Flux Elements from Observations and Numerical Simulations,"
Ap J, 757, 148
reprint (pdf)
-
Braun, D.C. 2012,
"Comment on 'Detection of Emerging Sunspot Regions in the Solar Interior',"
Science, 336, 296
reprint (pdf)
supplementary material (pdf)
-
Braun, D.C., Birch, A.C., Rempel, M., and Duvall, T.L. Jr. 2012,
"Helioseismology of a Realistic Magnetoconvective Sunspot Simulation,"
Ap J, 744, 77
reprint (pdf)
-
Lindsey, C., Braun, D., González-Hernández, I., and Donea, A.-C. 2011,
"Computational Seismic Holography of Acoustic Waves in the Solar Interior,"
in Holography - Different Fields of Application, Freddy Alberto Monroy Ramírez (Ed.), ISBN: 978-953-307-635-5, InTech
link
-
Braun, D.C., Birch, A.C., Crouch, A.D. and Rempel, M.
2011, "The Need for Physics-based Inversions of Sunspot Structure and Flows,"
J. Phys.: Conf. Ser., 271, 012010.
reprint
-
Braun, D.C. and Wan, K..
2011, "Properties of Near-surface Flows around Active Regions from Helioseismic Holography,"
J. Phys.: Conf. Ser., 271, 012007.
reprint
-
Birch, A.C., Parchevsky, K., Braun, D.C., and Kosovichev, A. 2011,
"Hare and Hounds Tests of Helioseismic Holography,"
Solar Phys., 272, 11
reprint (pdf)
-
Braun, D.C., Birch, A.C., Crouch, A.D. and Rempel, M.
2011, "Towards Physics-based Helioseismic Inversions of Subsurface Sunspot Structure,"
Physics of Sun and Star Spots, IAU Conference Proceedings,
273, 379-383.
reprint,
ADS Abstract
-
Crouch, A.D., Birch, A.C., Braun, D.C., and Clack, C.T.M.
2011, "Helioseismic Probing of the Subsurface Structure of Sunspots,"
Physics of Sun and Star Spots, IAU Conference Proceedings,
273, 384-388.
reprint,
ADS Abstract
-
Birch, A.C., Braun, D.C., and Fan Y. 2010,
"An Estimate of the Detectability of Rising Flux Tubes,"
Ap J , 723, L190
reprint (pdf)
-
Moradi, H. and 21 coauthors. 2010,
"Modeling the Subsurface Structure of Sunspots,"
Solar Phys., 267, 1
reprint (pdf)
-
Schunker, H. and Braun, D.C. 2010,
"Newly Identified Properties of Surface Acoustic Power,"
Solar Phys., 268, 349
reprint (pdf)
-
González-Hernández, I., Hill, F., Scherrer, P.H., Lindsey, C. and Braun, D.C. 2010
"On the Success Rate of the Farside Seismic Imaging of Active
Regions,"
Space Weather , 8,
reprint (pdf)
-
Jain, R., Hindman, B.~W., Braun, D.~C., and Birch, A.~C. 2009,
"Absorption of p Modes by Thin Magnetic Flux Tubes,"
Ap J , 695, 325
reprint (pdf)
-
Gizon, L. and 14 coauthors. 2009,
"Helioseismology of Sunspots: A Case Study of NOAA Region 9787,"
Space Sci. Rev. ,
reprint (pdf)
erratum (pdf)
-
Birch, A. C., Braun, D. C., Hanasoge, S. M., and Cameron, R. 2009,
"Surface-focused Seismic Holography of Sunspots:
II. Expectations from Numerical Simulations Using Sound-Speed Perturbations,"
Solar Phys. , 254, 17
reprint (pdf)
-
Braun, D. C. and Birch, A. C. 2008,
"Prospects for the Detection of the Deep Solar Meridional Circulation,"
Ap J , 689, L161
reprint (pdf)
-
Braun, D. C., and Birch, A. C. 2008,
"Surface-focused Seismic Holography of Sunspots:
I. Observations,"
Solar Phys. , 251, 267
reprint (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. , 251, 341
reprint (pdf)
-
Braun, D. C., Birch, A. C., Benson, D., Stein, R. F., and Nordlund, 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
reprint (pdf)
-
Crouch, A.D., 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
-
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,"
Ap J., 621, L149.
reprint (pdf)
-
Lindsey, C. and Braun, D. C. 2005,
"The Acoustic Showerglass I. Seismic Diagnostics of Photospheric Magnetic
Fields,"
Ap J., 620, 1107.
reprint
-
Lindsey, C. and Braun, D. C. 2005,
"The Acoustic Showerglass II. Imaging Active Region Subphotospheres,"
Ap J., 620, 1118.
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
-
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
-
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
-
Lindsey, C. and Braun, D. C. 2004,
"Principles of Seismic Holography for Diagnostics of the Shallow
Subphotosphere,"
Ap 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
- 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.
, reprint
- 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.
, reprint
- 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.
reprint ,
- 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 ,
- Braun, D. C. and Lindsey, C. 2001,
"Seismic Imaging of the Far Hemisphere of the Sun,"
Ap. 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 Phys.,
192, 285.
reprint
ADS Abstract
- Lindsey, C. and Braun, D. C. 2000,
"Basic Principles of Solar Acoustic Holography,"
Solar Phys.,
192, 261.
reprint
ADS Abstract
- Braun, D. C. and Lindsey, C. 2000,
"Phase-sensitive Holography of Solar Activity,"
Solar Phys.,
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 Phys.,
192, 321.
reprint
ADS Abstract
- Donea, A.-C., Braun D. C. and Lindsey, C. 1999,
"Seismic Images of a Solar Flare,"
Ap. J.,
513,
L143.
ADS Abstract
- Braun D. C. and Lindsey, C. 1999,
"Helioseismic Images of an Active Region Complex,"
Ap. J.,
513,
L79.
ADS Abstract
- Lindsey, C. and Braun, D. C. 1999,
"Chromatic Holography of the Sunspot Acoustic Environment,"
Ap. J., 510, 494.
ADS Abstract
Selected talks and other presentations
-
Braun, D.C.
2012, "Local helioseismology: methods and challenges,"
talk at GONG2012 / LWS/SDO-5 / SOHO 27 Conference, Palm Cove, Queensland
November 12-16, 2012
pdf of powerpoint
-
González-Hernández, I., Hill, F., Lindsey, C., Braun, D., Scherrer, 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.
- 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
- 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 ,
- 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
Acknowledgements
My research uses solar observations obtained primarily from the
Helioseismic and Magnetic Imager (HMI) on
SDO
Solar Oscillations Investigations - Michelson Doppler Imager (MDI) on
SOHO
and the
Global Oscillations Network Group (GONG),
and is funded by the
National Science Foundation and the
National Aeronautics and Space Administration.