Greg L. Bryan

Department of Astronomy, Columbia University
1328 Pupin Physics Lab, MC 5246
550 West 120th Street
New York, NY 10027
phone: 1-212-854-6837
fax: 1-212-854-8121
email: gbryan //at\\ astro.columbia.edu University of Oxford, Astrophysics

Personal data

Born: July, 1967
Citizenship: Canadian

Education

1990-1996
Ph.D. in astrophysics from the University of Illinois at Urbana-Champaign, Urbana, IL.
1985-1989
B.Sc. in physics from the Department of Physics, University of Calgary, Alberta, Canada.

Awards and Fellowships

2003    Philip Leverhulme Prize, Leverhulme Trust (£50,000 prize for "outstanding young scholars")
1998    Hubble Fellowship, Space Telescope Science Institute
1997    Lyman Spitzer Fellowship, Department of Astrophysical Sciences, Princeton University
1997    Worked on visualization for IMAX film "Cosmic Voyage", which was nominated
            for an Academy Award (best short documentary)
1990    Departmental Fellowship, Department of Astronomy,
            University of Illinois at Urbana-Champaign
1985    University of Calgary Merit Scholarship, University of Calgary, Canada

Professional Experience

2004-present
Assistant Professor of Astronomy, Columbia University
2001-2004
University Lecturer (equivalent to US Assistant Professor), Dept. of Physics, University of Oxford
1998-2001
Hubble Fellow, MIT Center for Space Research and Department of Physics
1997-1998
Lyman Spitzer Fellow, Princeton University Observatory.
1996-1997
Research Associate, MIT Department of Physics.
1991-1996
Teaching/Research Assistant, National Center for Supercomputing Applications.
1989-1990
Research Assistant, University of Colorado.

 

Administrative/Teaching Experience

2004-
Instructor for G9001: Galaxy Formation
2002-2004
Head of the Physics Computing Practical Lab (300 students), Senior Physics Tutor at New College (30 students)
2001-2004
Lecturer in Cosmology, Astronomy and Computational Physics (undergraduate and graduate levels), Tutor in Physics at New College.
1997-2000
Journal Club at the Center for Space Research; Library advisory committee; Proposal review panel member for NSF; Peer reviewer for astrophysical journals.
1999
Guest editor for Computing in Science and Engineering.
1992-1996
Web site administrator for the Grand Challenge Cosmology Consortium; Unix system administrator for the Laboratory for Computational Astrophysics.

 
 

Publications

    A. In refereed publications
     
  1. On the Detectability of Turbulence and Bulk Flows in X-ray Clusters
    Sunyaev, R., Norman, M.L., Bryan, G.L., 2003, Astronomy Letters, in press

  2. Heating cooling flows with jets
    Omma, H., Binney, J., Bryan, G.L., Slyz, A., 2003, ApJ, in press

  3. On the Origin of Intracluster Entropy
    Voit, G.M., Balogh, M.L., Bower, R.G., Lacey, C., Bryan, G.L., 2003, ApJ, 593, 272

  4. Eccentricity Evolution in Simulated Galaxy Clusters
    Floor, S.N., Melott, A.L., Miller, C.J., Bryan, G.L., 2003, ApJ, 591, 741

  5. Numerical simulations of high redshift star formation in Dwarf Galaxies

    6. Tassis, K., Abel, T., Bryan, G.L., Norman, M.L, 2003, ApJ, 587, 13
     
  6. Effects of a soft X-ray background on structure formation at high redshift

    7. Machacek, M.E., Bryan, G.L., Abel, T. 2003, MNRAS, 338, 273
     
  7. A Universal Temperature Profile for Galaxy Clusters

    8. Loken, C., Norman, M.L., Nelson, E., Burns, J., Bryan, G.L., Motl, P. 2002, ApJ, 579, 571
     
  8. Entropy Models for the Intracluster Medium

    9. Voit, G.M., Bryan, G.L., Balogh, M.L., Bower, R.G. 2002, ApJ, 576, 601
     
  9. Stormy weather and cluster radio galaxies

    10. Burns, J.O., Loken, C., Roettiger, K., Rizza, E., Bryan, G., Norman, M.L., Gomez, P., Owen, F.N. 2002, New Astronomy Reviews, 46, 135
     
  10. Simulating the X-ray Forest

    11. Fang, T., Bryan, G.L., Canizares, C.R 2002, ApJ, 564 604
     
  11. A Chandra High-Energy Transition Grating Spectrometer Observation of the quasar H1821+643 and its surrounding cluster

    12. Fang, T., Davis, D.S., Lee, J.C., Marshall, H.L., Bryan, G.L., Canizares, C.R. 2002, ApJ, 565, 86
     
  12. The formation of the first star in the universe

    13. Abel, T., Bryan, G.L., Norman, M.L. 2002, Science, 295, 93
     
  13. Regulation of the X-ray luminosity of cluster of galaxies by cooling and supernovae feedback

    14. Voit, G.M., Bryan, G.L. 2001, Nature, 22 November 2001
     
  14. Probing the Intergalactic Medium with the OVI Forest

    15. Fang, T., Bryan, G.L., 2001, ApJ, 561 31L
     
  15. The X-ray Surface Brightness Distribution From Diffuse Gas

    16. Bryan, G.L., Voit, G.M. 2001, Astrophysical J. 556, 590
     
  16. Simulating the X-ray Forest

    17. Fang, T., Bryan, G.L., Canizares, C.R. 2002, Astrophysical J., 564, 604
     
  17. Hydrodynamical simulations of the Lya forest: data comparisons

    18. Meiksin, A., Bryan, G.L., Machacek, M. 2001, MNRAS, 327, 296
     
  18. Chandra Observations of Two High-Redshift Quasars

    19. Fang, T., Marshall, H.L., Bryan, G.L., Canizares, C.R. 2001, Astrophysical J., 55, 356
     
  19. On the Distribution of X-ray Surface Brightness From Diffuse Gas

    20. Voit, G.M., Bryan, G.L. 2001, Astrophysical J., 551, 139L
     
  20. Confusion of Diffuse Objects in the X-ray Sky

    21. Voit, G.M., Evrard, A.E., Bryan, G.L. 2001, Astrophysical J. Letters, 548, 123L
     
  21. Metal Enrichment and Temperature of the Intergalactic Medium

    22. Cen, R., Bryan, G.L. 2001, Astrophysical J. Letters, 546, 81
     
  22. Baryons in the Warm-Hot Intergalactic Medium

    23. Dave, R., Cen, R., Ostriker, J.P., Bryan, G.L., Hernquist, L., Katz, N., Weinberg, D.H., Norman, M.L., O'Shea, B. 2001, Astrophysical J., 552, 473
     
  23. Simulations of Pregalactic Structure Formation with Radiative Feedback

    24. Machacek, M.E., Bryan, G.L., Abel, T. 2001, Astrophysical J., 2001, 548, 509
     
  24. Explaining the Entropy Excess in Clusters and Groups of Galaxies without Additional Heating,

    25. Bryan, G.L. Astrophysical J. 2000, 544, L1
     
  25. The Formation and Fragmentation of Primordial Molecular Clouds,

    26. Abel, T., Bryan, G.L., Norman, M.L. Astrophysical J., 2000, 534, 57
     
  26. An XMM Pre-view of the Cosmic Network: Galaxy Groups and Filaments,

    27. Pierre, M., Bryan, G., Gastaud, R. Astronomy & Astrophysics, 2000, 356, 403
     
  27. Hydrodynamical Simulation of the Lyman Alpha Forest: Model Comparisons,

    28. Machacek, M.E., Bryan, G.L., Meiksin, A., Anninos, P., Thayer, D., Norman, M.L., Zhang, Y. Astrophysical J., 2000, 532, 118
     
  28. The b Distribution of the Lya Forest: Probing Cosmology and the Intergalactic Medium,

    29. Bryan, G.L., Machacek, M.E., Astrophysical J., 2000, 534, 57
     
  29. The Santa Barbara cluster comparison project: a comparison of cosmological hydrodynamics solutions,

    30. Frenk, C.S., White, S.DM., Bode, P., Bond, J.R., Bryan, G.L., Cen, R., Couchman, H.M.P., Evrard, A., Gnedin, N., Jenkins, A., Khokhlov, A.M., Klypin, A., Navarro, J.F., Norman, M.L., Ostriker, J.P., Owen, J.W., Pearce, F.R., Pen, U.-L., Steinmetz, M., Thomas, P.A., Villumsen, J.V., Wadsley, J.W., Warren, M.S., Xu, G., Yepes, G., 1999, ApJ, 525
     
  30. Fluids in the Universe: Adaptive Mesh Refinement in Cosmology,

    31. Bryan, G.L., 1999, Computing in Science and Engineering, 1:2, 46.
     
  31. Resolving the Lyman alpha Forest,

    32. Bryan, G.L., Machacek, M., Anninos, P., Norman, M.L., 1999, ApJ, 517, 13
     
  32. Statistical Properties of X-ray Clusters: Analytic and Numerical Comparisons.

    33. Bryan, G.L., Norman, M.L., 1998, ApJ, 495, 80.
     
  33. Galaxies Collide on the I-Way: An Example of Heterogeneous Wide-Area Collaborative Supercomputing,

    34. Norman, M.L., Beckman, P., Bryan, G., Dubinski, J., Gannon, D., Hernquist, L., Keahey, K., Ostriker, J.P., Shalf, J., Welling, J., Yang, S. 1996, J. of Supercomputer Applications and High Performance Computing, 10:2, 132.
     
  34. The X-Ray Luminosity Function and Gas Mass Function for Optically Selected Poor and Rich Clusters of Galaxies,

    35. Burns, J.O., Ledlow, M.J., Loken, C., Klypin, A., Voges, W., Bryan, G.L., Norman, M.L., White, R.A., 1996, ApJL 467, L49.
     
  35. A Piecewise Parabolic Method for Cosmological Hydrodynamics,

    36. Bryan, G.L., Norman, M.L., Stone, J.M., Cen, R., Ostriker, J.P., 1995, Computer Physics Communication 89, 149.
     
  36. A Parallel Self-consistent Field Code,

    37. Hernquist, L., Sigurdsson, S., Bryan, G.L., 1995, Astrophysical Journal, 446, 717.
     
  37. The Evolution of X-ray Clusters in a Cold Plus Hot Dark Matter Universe,

    38. Bryan, G.L., Klypin, A., Loken, C., Norman, M.L., Burns, J.O., 1994, Astrophysical Journal, 437, L5.
     
  38. A Comparison of Cosmological Hydrodynamic Codes,

    39. Kang, H., Ostriker, J.P., Cen, R., Ryu, D., Hernquist, L., Evrard, A.E., Bryan, G.L., Norman, M.L., 1994, Astrophysical Journal, 430, 83.
     
  39. X-ray Clusters from a High-Resolution Hydrodynamic PPM Simulation of the Cold Dark Matter Universe,

    40. Bryan, G.L., Cen, R., Norman, M.L., Ostriker, J.P., Stone, J.M., 1994, Astrophysical Journal, 428, 405.
     
  40. Energy Distributions of Symbiotic Novae,

    41. Bryan, G.L., Kwok, S., 1991, Astrophysical Journal, 368, 252.
     
  41. On the Formation of Carbon Stars,

    42. Bryan, G.L., Volk, K., Kwok, S., 1991, Astrophysical Journal, 365, 301.
     

    B. In Conference Proceedings
     

  42. On the Formation of Cool, Non-Flowing Cores in Galaxy Clusters via Hierarchical Mergers
    Burns, J.O., Motl, P.M., Norman, M.L., Bryan, G.L. 2003, in proceedings for ``The Riddle of Cooling Flows in Galaxies and Clusters of Galaxies'' held at Charlottesville, VA USA May 31 - June 4 2003.  eds T. H. Reiprich, J. C. Kempner and N. Soker (astro-ph/0309836)

  43. The Impact of Star Formation on Cool Core Galaxy Clusters
    Motl, P.M., Burns, J.O., Norman, M.L., Bryan, G.L. 2003, in proceedings for ``The Riddle of Cooling Flows in Galaxies and Clusters of Galaxies'' held at Charlottesville, VA USA May 31 - June 4 2003.  eds T. H. Reiprich, J. C. Kempner and N. Soker (astro-ph/0309828)

  44. Redshift of Galaxy Clusters from the Sunyaev-Zel'dovich effect

    45. Diego, J.M, Mohr, J., Silk, J., Bryan, G. to appear in the Proceedings of the XXXVIIth Moriond Astrophysics Meeting "The Cosmological Model"
     
  45. Achieving Extreme Resolution in Numerical Cosmology using Adaptive Mesh Refinement

    46. Bryan, G.L., Abel, T., Norman, M.L, 2002, Supercomputing 2001 proceedings
     
  46. Simulating the X-ray Forest in a Lmbda CDM Universe

    47. Fang, T., Bryan, G.L., Canizares, C.R. 2002, To appear in the Proceedings of the STScI Symposium, "The Dark Universe: Matter, Energy, and Gravity" (April 2 - 5, 2001), ed. M. Livio
     
  47. Probing the OVI forest

    48. Bryan, G.L., Fang, T. 2002 in Gaseous Matter in Galaxies and Intergalactic Space, 17th IAP conference, p. 263 (Frontier Group: Paris)
     
  48. The Initial Mode of Star Formation

    49. Abel, T., Bryan, G.L., Nomrna, M.L., to appear in"Modes of Star Formation and the Origin of the Field Populations", ASP Conference Series, Vol. XXXX, 2001, E.K. Grebel and W. Brandner, eds.
     
  49. Dynamic Load Balancing for Adaptive Mesh Refinement Application

    50. Lan, Z., Taylor, V., Bryan, G. 2001, to appear in proceedings of the International Parallel and Distributed Processing Symposium
     
  50. Simulated Cluster Archive: A Computational Catalog of X-Ray Clusters in a Lambda-CDM Universe

    51. Norman, M.L., Daues, G., Nelson, E., Loken, C., Burns, J., Bryan, G., Klypin, A paper presented at "Large-Scale Structure in the X-Ray Universe", Santorini, Greece 20-22 September 1999. Eds. M. Plionis & I. Georgantopoulos, (Atlantisciences, Athens)
     
  51. First Structure Formation and the First Stars

    52. Norman, M.L., Abel, T., Bryan, G. 2000, to appear in "The First Stars", Eds A. Weiss, T. Abel & V. Hill, Proceedings of the MPA/ESO Workshop, Garching, Germany 4-6 August 1999, (Springer Verlag, Heidelberg)
     
  52. Dynamic Load Balancing Techniques for Improving Adaptive Mesh Refinement

    53. Lan, Z. Taylor, V., Bryan G.L in proceedings of Supercomputing 2000
     
  53. The Structure of Galaxy Formation: Disks in CDM Cosmologies

    54. Bryan, G.L. 2000, in proceedings of the 3rd Guillermo Haro Astrophysics Conference "Cosmic Evolution and Galaxy Formation: Structure, Interactions, and Feedback, Eds. J. Franco, E. Terlevich, O. Lopez-Cruz, and I. Aretxaga, Astronomical Society of the Pacific Conference Series, Volume 215, p.11 (Sheridan Books, Michigan)
     
  54. Stormy Weather and Cluster Radio Galaxies

    55. Burns, J.O., Loken, C., Roettiger, K., Rizza, E., Bryan, G., Norman, M., Gomez, P., Owen, F.N., 2001, in Life Cycles of Radio Galaxies, ed. J. Biretta et al., New Astronomy Reviews
     
  55. Observations and AMR Simulations of the Evolution of Galaxy Clusters,

    56. Burns, J.O., Loken, C., Rizza, E., Bryan, G., Norman, M. in the 19th Texas Symposium on Relativistic Astrophysics and Cosmology, held in Paris, France, Dec. 14-18, 1998. Eds.: J. Paul, T. Montmerle, and E. Aubourg (CEA Saclay).
     
  56. Simulating Galaxy Formation,

    57. Bryan, G.L., Kepner, J.V. in the 19th Texas Symposium on Relativistic Astrophysics and Cosmology, held in Paris, France, Dec. 14-18, 1998. Eds.: J. Paul, T. Montmerle, and E. Aubourg (CEA Saclay).
     
  57. The Formation and Fragmentation of Primordial Molecular Clouds

    58. Abel, T., Bryan, G.L., Norman, M.L. Contributions to the Proceedings of the MPA/ESO Conference "Evolution of LSS: from Recombination to Garching", Garching, August 2-7, 1998
     
  58. Simulating the Lyman Alpha Forest,

    59. Machacek, M., Bryan, G., Anninos, P., Meiksin, A., Norman, M.L., in the Proceedings of PASCOS-98, Sixth International Symposium on Particles, Strings and Cosmology, Northeastern Univ., Boston, MA, March 22 - 27, 1998, ed. Pran Nath (World Scientific, Singapore)
     
  59. From Cosmological Initial Conditions to Primordial Protostellar Cloud Cores,

    60. Norman, M.L., Abel, T., Bryan, G. to appear in the Proceedings of the 9th Annual October Astrophysics Conference in Maryland, "After the Dark Ages: When Galaxies Were Young (the Universe at 2<z<5)", ed. S. S. Holt and E. P. Smith, October 12-14, 1998.
     
  60. The Lyman Alpha Forest in Hierarchical Cosmologies,

    61. Machacek, M., Bryan, G.L., Anninos, P., Meiksin, A., N., Norman, M.L., Zhang, Y. in the Proceedings of the 9th Annual October Astrophysics Conference in Maryland, "After the Dark Ages: When Galaxies Were Young (the Universe at 2<z<5)", ed. S. S. Holt and E. P. Smith, October 12-14, 1998.
     
  61. Cosmological Adaptive Mesh Refinement,

    62. Norman, M.L., Bryan, G.L., in "Numerical Astrophysics 1998", eds. S. Miyama & K. Tomisaka, Tokyo, March 10-13, 1998
     
  62. Cluster Turbulence,

    63. Norman, M.L., Bryan, G.L., 1998, in Ringberg Workshop on M87, eds. K. Meisenheimer and H-J. Roeser, Springer Verlag.
     
  63. A Hybrid AMR Application for Cosmology and Astrophysics,

    64. Bryan, G.L., Norman, M.L., in "Workshop on Structured Adaptive Mesh Refinement Grid Methods", Mar. 1997, ed. N. Chrisochoides.
     
  64. Simulating X-ray Clusters with Adaptive Mesh Refinement,

    65. Bryan, G., Norman, M.L. in Proceedings of the 12th `Kingston meeting' on Theoretical Astrophysics: Computational Astrophysics (ASP Conference Series, 123), 1997, eds. D. A. Clarke & M. J. West, (San Francisco: ASP), p. 363.
     
  65. The Numerical Simulation of X-ray Clusters

    66. Bryan, G. 1996, Ph.D. Thesis, University of Illinois at Urbana-Champaign.
     
  66. High-Resolution 3D Simulations and Jet Turbulence,

    67. Loken, C., Burns, K., Bryan, G., Norman, M. 1996, in Energy Transport in Radio Galaxies and Quasars, ASP Conference Series, eds. P. Hardee, A. Bridle, and A. Zensus.

  67. A Hydrodynamic Simulation of Cluster Formation,

    68. Bryan, G.L., Norman, M.L., 1994, in Numerical Simulations in Astrophysics, eds. Franco, J., Lizano, S., Aguilar, L., Daltabuit, E. (Cambridge: Cambridge University Press), 73.

  68. Adapting CMHOG to Cosmological Studies,

    69. Bryan, G.L., 1992, NCSA Technical Report 004.