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1 OFER COHEN Harvard-Smithsonian Center for Astrophysics, MS-67, 60 Garden St., Cambridge, MA Phone: (617) ; cell: (734) ; Homepage: EDUCATION University of Michigan, Department of Atmospheric, Oceanic, & Space Sciences, Ann Arbor, MI PhD., Space and Planetary Physics, 2008 Thesis title: The Solar Corona through Numerical Eyes Advisor: Tamas Gombosi Tel-Aviv University, Department of Geophysics & Planetary Sciences, Tel- Aviv, Israel B.Sc., 2000 M.Sc., RESEARCH INTEREST AND ACCOMPLISHMENTS Developed a three-dimensional numerical model for the steady-state solar corona, coronal heating, and the ambient solar wind. Performed numerical simulations of the Sun-to-Earth propagation of Coronal Mass Ejections (space weather events), Coronal Mass Ejections in the corona, and coronal EIT/EUV waves. Performed the first three-dimensional, time-dependent numerical simulation of the interplanetary environment of close-in planets, star-planet interaction, and of a space weather event on close-in exoplanets. Performed the first global MHD simulation of the interplanetary environment of the young Sun and the cosmic-ray intensity near the Archean Earth. Performed numerical studies of the interaction of Coronal Mass Ejections with the ambient coronal field. Developed a flux-transport numerical model for the open magnetic flux on the Sun. Performed numerical studies of the coronal structure of Sun-like and non Sun-like stellar systems including the first simulation driven by stellar magnetic field data. GRANTS AND WINNING PROPOSALS PI, Chandra theory program cycle 13, 3D MHD Modeling of Stellar Coronae, $87K, Co-I, The Smithsonian Consortia, Life and the Cosmos: Building the Consortium, $85K, (PI J. Drake). PI, NSF ATM , The Role of Coronal Mass Ejections in Reversal the Open Magnetic Flux of the Sun, $160K, Co-I, The Smithsonian Consortia, The Faint Young sun Paradox, $100K, (PI D. Latham).
2 Co-I, ESO Observing Program 089.D-0138(A), Magnetic fields & winds in planet hosting stars, 3 nights with HARPS (PI G. Hussain). Co-I, Chandra cycle 14, FAST AND FURIOUS: X-RAYS AND UV FROM THE WASP-18 SYSTEM, 90 ksec (PI I. Pillitteri). AWARDS AND FELLOWSHIPS NSF Postdoctoral Fellow, Harvard-Smithsonian Center for Astrophysics Recipient, AAS Solar Physics Division Travel Award, 2007 Recipient, ISROSES 2006 Travel Award, 2006 Recipient, Solar, Heliospheric & INterplanetary Environment (SHINE) Travel Award, Graduate Student Research Assistant, Department of Atmospheric, Oceanic, & Space Sciences, University of Michigan, Graduate Student Teaching Assistant, Geophysics & Planetary Sciences, Tel-Aviv University, COMMUNITY ACTIVITIES AND MEMBERSHIPS Member, Peer Review Panel: 1. NSF AGS Solar, Heliospheric, and Interplanetary Environment (SHINE), NASA ROSES SR&T Solar and Heliophysics program, External Proposal Reviewer: 1. NASA program 2009, 2012, 2013; NSF program 2012, NASA Postdoc fellowship program, Science and Technology Facilities Council in the UK, Scientific reviewer for ApJ, A&A, Solar Physics, Icarus, MNRAS, JASTP, and International Association of Geomagnetism and Aeronomy (IAGA) book Series. Working Group Leader and Member of the SOC in the SHINE workshop 2009 and Member, Harvard-Smithsonian Center for Astrophysics post-doc council, Student Representative, SHINE for two consecutive years, Member, American Geophysical Union, AAS. TEACHING EXPERIENCE AND SCIENTIFIC ADVISING Cecilia Garraffo visiting scientist, Harvard-Smithsonian Center for Astrophysics, present. Glenn Sterenborg PhD student, Earth & Planetary Sciences, Harvard University, Teaching Assistant, Introduction to the Space Environment, Department of Atmospheric, Oceanic, & Space Sciences, University of Michigan (actual teaching), Teaching Assistant, Earth System Evolution, Department of Atmospheric, Oceanic, & Space Sciences, University of Michigan, Fall 2004
3 COMPUTER & PROGRAMMING SKILLS Vast experience with high-end parallel computing, computational fluid dynamics, UNIX, LINUX, Fortran 90, C, MPI, OpenMP, IDL, MATLAB, TECPLOT. INVITED TALKS & COLLOCUIA: 1. University of New Hampshire, space science colloquium, October Boston University, space science colloquium, September UCLA, ESS Colloquium, April Clemson University, Physics Colloquium, February NASA Goddard, Heliophysics division seminar, November University of Arizona LPL colloquium, October University of Delaware, Astronomy & Space Physics seminar, April Technion, Astrophysics Seminar, Haifa, Israel May Weizmann Institute, Astrophysics Seminar, Rehovot, Israel, May Tel-Aviv University, Astrophysics Seminar, Tel-Aviv, Israel, May Tel-Aviv University, Dep. Of Geophysics seminar, Tel-Aviv, Israel, May Rice University, Physics Colloquium and Space Physics seminar, January Harvard-Smithsonian Solar Stellar & Planetary Astrophysics Division weekly seminar, Cambridge, MA, October Harvard-Smithsonian Theoretical Astrophysics Division luncheon, Cambridge, MA, October Harvard-Smithsonian High Energy Division weekly seminar, Cambridge, MA, October Ben-Gurion University, Astrophysics seminar, Beer-Sheva, Israel, June Boston University Astrophysics seminar, Boston, MA, January SHINE workshop, Whistler, Canada, August SHINE workshop, Zermatt, Midway, Utah, August Press Releases: 1. Exoplanet aurora: An out-of-this-world sight, 2011 appeared on over 50 sciences and news websites including the Harvard Gazette, Discovery News, and Astronomy Magazine. 2. X-Ray Observations of an Extrasolar Planetary System, 2010 CfA Weekly News. 3. The Winds of Spinning Stars, 2010 CfA Weekly News.
4 Journal Papers: LIST OF REFEREED PUBLICATIONS 1. G. Le Chat, J. Kasper, O. Cohen, and S.R. Spangler, Diagnostics of the solar corona from comparison between Faraday rotation measurements and MHD simulations, ApJ, submitted. 2. O. Cohen, J.J. Drake, A Grid of MHD Models for Stellar Mass Loss and Spin-down Rates of Solar Analogs, ApJ, submitted, arxiv: C. Garraffo, O. Cohen, J.J. Drake, C. Downs, The Effect of Limited Spatial Resolution of Stellar Surface Magnetic Field Maps on MHD Wind and Coronal X-ray Emission Models, ApJ, 764,10, J. Drake, O Cohen, S. Yashiro, N. Gopalswamy, Implications of mass and energy loss due to coronal mass ejections on magnetically-active stars, ApJ, 764, 170, O. Cohen, J.J. Drake, J. K ota, The Cosmic Ray Intensity Near the Archean Earth, ApJ, in press, ApJ, 760, 85, O. Cohen & A. Glocer, Ambipolar Electric Field, Photoelectrons, and their Role in Atmospheric Escape From Hot-jupiters, ApJ, 753, L4, O. Cohen, J.J. Drake, V.L. Kashyap, The Role of White Dwarfs in Cataclysmic Variable Spin-down, ApJ, 746, L3, Pillitteri, I., Gunther, H.M., Wolk, S.J., Kashyap, V.L., Cohen, O., X-ray activity phased with planet motion in HD ?, ApJ, 741, L18, O. Cohen, The Independency of Stellar Mass Loss Rates on stellar X-ray Luminosity and Activity Level based on Solar X-ray flux and Solar Wind Observations, MNRAS in press, arxiv: , O. Cohen, V.L. Kashyap, J.J. Drake, I.V. Sokolov, and T.I. Gombosi, The Dynamics of Stellar Coronae Harboring Hot-jupiters II. A Space Weather Event on A Hot-jupiter, ApJ, 738, 166, arxiv: , O. Cohen, V.L. Kashyap, J.J. Drake, I.V. Sokolov, C. Garraffo, and T.I. Gombosi, The Dynamics of Stellar Coronae Harboring Hot-jupiters I. A Time-dependent MHD Simulation of the Interplanetary Environment in the HD Planetary System, ApJ, 733, 67, arxiv: , G. M Sterenborg, O. Cohen, J.J. Drake, T.I. Gombosi, Modeling the Young Sun's Solar Wind and its Interaction with Earth's Paleomagnetosphere, J. of Geophysical Research - Space Physics, 116, A01217, doi: /2010ja016036, O. Cohen, J.J. Drake, V.L. Kashyap, I.V. Sokolov, and T.I. Gombosi, The Impact of Hot Jupiters on the Spin-down of their Host Stars, ApJ, 723, L64-L67, O. Cohen, G. D. R. Attrill, N. A. Schwadron, N. U. Crooker, M. J. Owens, C. Downs, and T. I. Gombosi, Numerical Simulation of the May 12, 1997 CME Event - the Role of Magnetic Reconnection, J. of Geophysical Research - Space Physics, 115, A10104, doi: /2010ja015464, Pillitteri, I., Wolk, S. J., Cohen, O., Kashyap, V., Knutson, H., Lisse, C. M., Henry, G. W., XMM-Newton observations of HD during planetary transits, ApJ, 722, , O. Cohen, J.J. Drake, V.L. Kashyap, G.A.J. Hussain, and T. I. Gombosi, The Coronal Structure of AB Doradus, ApJ, 721, 80-89, O. Cohen, J.J. Drake, V.L. Kashyap, H. Korhonen, D.M. Elstner, and T. I. Gombosi, Magnetic Structure of Rapidly Rotating FK Comae-Type Coronae, ApJ, 719, , 2010.
5 18. O. Cohen, G.D.R. Attrill, W.B. Manchester IV, M.J. Wills-Davey, Numerical Simulation of an EUV Coronal Wave Based on the February 13, 2009 CME Event Observed by STEREO, ApJ, 705, , O. Cohen, J.J. Drake, V.L. Kashyap, S. H. Saar, I. V. Sokolov, W. B. Manchester, K. C. Hansen, and T.I. Gombosi, Interactions of the Magnetospheres of Stars and Close-in Giant Planets, ApJ, 704, L85-L88, O. Cohen, J.J. Drake, V.L. Kashyap, and T.I. Gombosi, The Effect of Magnetic Spots on Stellar Winds and Angular Momentum Loss, ApJ, 699, , Y.D. Jia, C.T. Russell, L K. Jian, W.B. Manchester, O. Cohen, K.C. Hansen, M.R. Combi, T.I. Gombosi, A. Vourlidas, Study of the April 20, 2007 CME-Comet Interaction Event with an MHD Model, ApJ, 696, L56-L60, Zieger, B., K. C. Hansen, O. Cohen, T. I. Gombosi, T. H. Zurbuchen, B. J. Anderson, and H. Korth, Upstream conditions at Mercury during the first MESSENGER flyby: Results from two independent solar wind models, Geophys. Res. Lett., 36, L10108, doi: /2009gl038346, B. van der Holst, W. Manchester IV, I.V. Sokolov, G. Toth, T.I. Gombosi, D. DeZeeuw, and O. Cohen, Breakout Coronal Mass Ejection or Streamer Blowout: the Bulge Effect, ApJ, 693, , N. Lugaz, A. Vourlidas, I.I. Roussev, C. Jacobs, W.B. Manchester, IV, O. Cohen, The Brightness of Density Structures at Large Solar Elongation Angles: What Exactly is Being Observed by STEREO/SECCHI? ApJ, 684, L111-L114, A.M. Vasquez, R.A. Frazin, K. Hayashi,, I.V. Sokolov, O. Cohen, W.B. Manchester IV, and F. Kamalabadi, Validation of Two MHD Models of the Solar Corona with Rotational Tomography, ApJ, 682, , Y. C.-M. Liu, M. Opher, O. Cohen, P.C. Liewer, and T.I. Gombosi, A Simulation of a CME Propagation and Shock Evolution in the Lower Solar Corona, ApJ, 680, , O. Cohen, I.V. Sokolov, I.I. Roussev, and T.I. Gombosi, Validation of a Global MHD Model for the Synoptic Solar Wind, J. of Geophysical Research - Space Physics 113, A03104, doi: /2007ja012797, O. Cohen, I.V. Sokolov, I.I. Roussev, C.N. Arge, W.B. Manchester, T.I. Gombosi, R.A. Frazin, H. Park, M.D. Butala, F.Kamalabadi, and M. Velli, A Semi-Empirical Magnetohydrodynamical Model of the Solar Wind, ApJ, 654, L163, O. Cohen, L.A. Fisk, I.I. Roussev, G. Toth, and T.I. Gombosi, Enhancement of Photospheric Meridional Flow by Reconnection Processes, ApJ, 645, , P. L. Israelevich, A.I. Ershkovich, T.I. Gombosi, F.M. Neubauer and O. Cohen, Fine structure of the diamagnetic cavity in comet Halley, J. of Geophysical Research - Space Physics, 108(A2), 1097, doi: /2002JA009622, Conference Proceedings: 31. I.V. Sokolov, K. G. Powell, O. Cohen, T. I. Gombosi, Computational MagnetoHydroDynamics, Based on Solution of the Well-Posed Riemann Problem, ASP Conference Series Vol. 385, 291, O. Cohen, I.V. Sokolov, I.I. Roussev, N. Lugaz, W.B. Manchester, T.I. Gombosi, and C.N. Arge, Validation of a Global 3D Heliospheric Model With Observations for the May 12, 1997 CME Event, J. of Atmospheric and Solar Terrestrial Physics, Vol. 70(4), , 2008.
6 1. Prof. Lennard Fisk Collaborator Professor of Space Science, University of Michigan and a member of the National Academy of Sciences 2455 Hayward St. Ann Arbor, MI Tel: lafisk@umich.edu REFERENCES 3. Prof. Tamas Gombosi PhD. Advisor Professor of Space Science, Atmospheric, Oceanic & Space Sciences, University of Michigan 2455 Hayward St. Ann Arbor, MI Tel: tamas@umich.edu 2. Dr. Jeremy drake Post-doc Science Advisor Astronomer, Harvard-Smithsonian Center for Astrophysics 60 Garden St. Cambridge, MA Tel: jdrake@cfa.harvard.edu 4. Dr. Steven Cranmer Astrophysicist, Harvard-Smithsonian Center for Astrophysics 60 Garden St. Cambridge, MA Tel: scranmer@cfa.harvard.edu.
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