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users:pennywu [2018/06/14 21:57]
Penny Wu
users:pennywu [2018/12/20 22:43] (current)
Penny Wu
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-======Dr Pin "​Penny" ​Wu====== +Dr Pin Wu (Penny)'s refereed publications were moved to her new website on 2018-12-05.
-I am a Daphne Jackson Fellow funded by the Science and Technology Facilities Council ​(STFC). +
  
-\\ +https://​sites.google.com/​site/​nanopenny/​home/​refereed-publications
  
-=====About me===== +Thanks.
-First, proudly I am a mum. Second, proudly I am a physicist. My research concerns plasmas, 99.999% of the visible (thus excludes dark matter) universe and the 4th state of matter in the "​solid-liquid-gas-plasma"​ hierarchy. Combining analytical methods and state-of-the-art kinetic simulations,​ I have investigated,​ three fundamental dissipative processes that heat plasmas: **shocks**, **reconnection**,​ and **turbulence**. Each theoretical endeavour has not only made an original contribution to plasma physics but has also proven valuable in facilitating NASA’s space exploration+
  
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-=====Bio===== 
  
-I received my Bachelor'​s degree from the University of Science and Technology of China (USTC), department of Modern Physics (course 4) which is adjacent to and affiliated with the National Synchrotron Radiation Laboratory. I received my Ph.D. (01/2010) from Boston University (supervisor:​ Professor Nathan Schwadron) in Space Plasma Physics for work performed jointly at the Los Alamos National Laboratory (LANL) (mentors: Dr S. Peter Gary and Dr Dan Winske). My Ph.D. thesis {{ :​users:​wu2009dec05.dissertation.pdf | }}, funded by the NASA Interstellar Boundary EXplorer (IBEX) mission and LANL's theory programs, addressed the solar wind and the interstellar pick-up ion kinetics in relation to collisionless dissipation at the Heliospheric termination **shock**, the inner boundary of our Solar System. Our analytical theory and computational model have been serving to interpret data acquired by the NASA IBEX and the Voyagers space missions [Wu et al., JGR, 2009 {{ :​users:​wu2009jgr.pdf | }}; Wu et al., JGR, 2010 {{ :​users:​wu2010jgr.pdf | }}]. Many years later, I watched "//The Farthest//",​ a 2017 documentary about the Voyagers'​ decades of journey to travel out of the Solar System. Despite the familiarity,​ I was still deeply moved by the final song, "​We'​ve won the race/ We've claimed our place/ Forever cold and lost in space..."​ 
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-I continued to work on theoretical and computational plasma physics during my time as a postdoc (mentors: Professor Michael Shay and Professor William H. Matthaeus) and subsequently a research scientist at the Bartol Research Institute, University of Delaware (Udel). My focus during my postdoc period (2010-2012) was **magnetic reconnection**. We demonstrated that low inflow density, common in the geospace magnetotail,​ leads to violent reconnection with faster rates and a series of drastic changes in the reconnection diffusion region [Wu et al., Phys. Plasmas, 2011 {{ :​users:​wu2012grl.pdf| }}]. We further investigated kinetic ion heating by specular reflections at the dipolarization front in the reconnection exhaust [Wu and Shay, GRL, 2012 {{ :​users:​wu2012grl.pdf | }}]. As a research scientist (2012-2014),​ I was fascinated by **plasma turbulence**,​ exploring its universality (von Karmen similarity decay) [Wu et al. PRL, 2013 {{ :​users:​wu2013prl.pdf | }}], its intermittency as manifested in the formation of dissipative current sheets and reconnection sites [Wu et al. APJL, 2013 {{ :​users:​wu2013apjl.pdf | }}], and its effect on ion-electron heating [Wu et al., PRL, 2013 {{ :​users:​wu2013prl.pdf | }}, Matthaeus et al. APJL, 2016 {{ :​users:​matthaeus2016apjl.pdf | }}]. A state-of-art massively parallel electromagnetic particle-in-cell simulation I performed have been posted by colleagues on [[http://​www.physics.udel.edu/​~whm/​UD-plasma-sims.html#​|Udel'​s website]] (also available on [[https://​www.youtube.com/​watch?​v=DAtLhKrF37o&​feature=youtu.be/​UD-plasma-sims.html#​|youtube]]). Our research was funded by several NASA and National Science Foundation (NSF) programs as well as the NASA Magnetospheric Multiscale (MMS) mission and the incoming [[https://​www.nasa.gov/​content/​goddard/​parker-solar-probe|Parker Solar Probe]] (PSP) mission (**launch window this summer 31/​07/​2018-19/​08/​2018!**). To be the first spacecraft to travel to our star the Sun's h**O**t (~10<​sup>​6</​sup>​degree) Corona, PSP will be breathtaking. Quite the opposite of "//The Furthest//",​ would this mission be a topic of a future documentary "//The closest//"​ (to a star) or "//The hottest//"?​ 8-)  ​ 
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-I was en route to tenure track positions in the US (having been shortlisted to an assistant professor interview in a ivy league university) but had made a difficult decision to quit at that peak of my career to join my husband in the UK and to start a family. I spent ~3.5 wonderful years savouring every precious moment with my child for my European adventures. During this time, I have continued some manageable amounts of professional services: gave an 1.5 hours invited lecture and an 30 minutes invited talk at the [[https://​star.pst.qub.ac.uk/​wiki/​doku.php/​public/​solarnet5/​start|5th SOLARNET summer school and workshop]]; provided services for NSF, Department of Energy (DOE), & NASA panels; refereed numerous research proposals and international Journal manuscripts;​ published 6 joint research papers; assumed honorary appointments;​ and advised Udel Ph.D. students (remotely). 
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-I was awarded a 3-year STFC Daphne Jackson in February 2018. Currently, I am thrilled to be back to research. Of interests are the dynamic processes--shock,​ reconnection,​ and turbulence---in the denser, (weakly) collisional,​ and radiative lower solar atmosphere plasmas, where plasmas go through recombination and ionisation, a very different (from the collisionless space plasmas that I've worked on) regime for me to explore. I enjoy my new challenge and look forward to the 2019 completion of the [[https://​dkist.nso.edu/​|Daniel K. Inouye Solar Telescope (DKIST)]], the largest solar telescope-to-be in the world. 
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-I regard the late Dr Nate Avery of Flagstaff Medical Center my role model, for his dedication, integrity, humour, and humanity. Encountering him has a huge impact on me. 
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-To find out the details of my research, please refer to my refereed publications. For the general public looking for popular books on modern physics and applied math for fun or for inspirations,​ I personally have enjoyed Professor Alan Guth's //​Inflationary Universe//, Boston University Nobel Laureate Professor Sheldon Glashow'​s //​Interactions//,​ James Gleick'​s //Chaos: Making a New Science//, and Professor Roger Penrose'​s //The Road to Reality//. 
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-=====Refereed Publications===== 
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-====Refereed Full Papers==== 
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-1. “Substorm associated magnetotail energetic electrons pitch angle evolutions and flow reversals: Cluster observation” 
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-**Wu, P.**, T. A. Fritz, B. Larvaud, and E. Lucek 
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-Geophysical Research Letters, 33, L17101 (7pp), 2006. {{ :​users:​wu2006grl.pdf |pdf}} 
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-2. “Initial condition influence on coronal mass ejection propagation” 
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-**Wu, P.**, N. A. Schwadron, G. L. Siscoe, and P. Riley  
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-Journal of Geophysical Research, 113, A00B05 (9pp), 2008. {{ :​users:​wu2008jgr.pdf |pdf}} 
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-3. “Energy dissipation and ion heating at the heliospheric termination shock” 
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-**Wu, P.**, D. Winske, S. P. Gary, N. A. Schwadron and M. A. Lee 
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-Journal of Geophysical Research, 114, A08103 (15pp), 2009. {{ :​users:​wu2009jgr.pdf |pdf}} 
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-4. “Hybrid simulations of the termination shock: suprathermal ion velocity distributions in the heliosheath” 
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-**Wu, P.**, K. Liu, D. Winske, S. P. Gary, N. A. Schwadron, and H. O. Funsten ​ 
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-Journal of Geophysical Research, 115, A11105 (13pp), 2010. {{ :​users:​wu2010jgr.pdf |pdf}} 
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-5. “Effect of inflow density on ion diffusion region of magnetic reconnection:​ Particle-in-Cell simulations” 
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-**Wu, P.**, M. A. Shay, T. D. Phan, M. Oieroset, and M. Oka 
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-Physics of Plasmas, 18 (11), 111204 (8pp), 2011. {{ :​users:​wu2011pop.pdf |pdf}} 
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-6. “Magnetotail dipolization front and associated ion reflection via Particle-in-Cell simulations” 
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-**Wu, P.** and M. A. Shay 
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-Geophysical Research Letters, 39 (8), L08107 (5pp), 2012. {{ :​users:​wu2012grl.pdf |pdf}} 
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-7. “Intermittent dissipation at kinetic scales in collisionless plasma turbulence” 
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-Wan, M., W. H. Matthaeus, H. Karimabadi, V. Roytershteyn,​ M. Shay, **P. Wu**, W. Daughton, S. Chapman 
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-Physical Review Letters, 109 (19), 195001 (5pp), 2012. {{ :​users:​wan2012prl.pdf |pdf}} 
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-8. “Intermittent heating in solar wind and kinetic simulations” 
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-**Wu, P.**, S. Perri, K. Osman, M. Wan, W. H. Matthaeus, M. A. Shay, M. L. Goldstein, H. Karimabadi, and S. Chapman 
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-Astrophysical Journal Letters, 763 (2), L30 (5pp), 2013. {{ :​users:​wu2013apjl.pdf |pdf}} 
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-9. “Coherent structures, intermittent turbulence and dissipation in high-temperature plasmas” 
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-Karimabadi, H., V. Roytershteyn,​ M. Wan, W. H. Matthaeus, W. Daughton, **P. Wu**, M. Shay, B. Loring, J. Borovsky, E. Leonardis, S. Chapman, and T. K. M. Nakamura 
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-Physics of Plasmas, 20 (1), 012303 (15pp), 2013. {{ :​users:​karimabadi2013pop.pdf |pdf}} 
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-10. “von Kármán energy decay and heating of protons and electrons in a kinetic turbulent plasma” 
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-**Wu, P.**, M. Wan, Willliam H. Matthaeus, M. A. Shay, and M. Swisdak 
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-Physical Review Letters, 111 (12), 121105 (5pp), 2013. {{ :​users:​wu2013prl.pdf |pdf}} 
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-11. “Electron heating during magnetic reconnection:​ A simulation scaling study” 
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-Shay, M. A., C. C. Haggerty, T. D. Phan, J. F. Drake, P. A. Cassak, **P.Wu**, M. Oieroset, M. Swisdak, and K. Malakit ​ 
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-Physics of Plasmas, 21 (12), 122902 (11pp), 2014. {{ :​users:​shay2014pop.pdf |pdf}} 
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-12. “Full particle electromagnetic simulations of entropy generation across a collisionless shock” 
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-Yang, Z., Y. D. Liu, G. K. Parks, **P. Wu**, C. Huang, R. Shi, R. Wang, and H. Hu  
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-Astrophysical Journal Letters, 793 (1), L11 (6pp), 2014. {{ :​users:​yang2014apjl.pdf |pdf}} 
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-13. “Intermittent dissipation and heating in 3D kinetic plasma turbulence” 
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-Wan, M., W. H. Matthaeus, V. Roytershteyn,​ H. Karimabadi, T. Parashar, **P. Wu**, and M. Shay 
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-Physical Review Letters, 114 (17), 175002 (5pp), 2015. {{ :​users:​wan2015prl.pdf |pdf}} 
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-14. “Intermittency,​ coherent structures and dissipation in plasma turbulence” 
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-Wan, M., W. H. Matthaeus, V. Roytershteyn,​ T. Parashar, **P. Wu** and H. Karimabadi 
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-Physics of Plasmas, 23 (4), 042307 (7pp), 2016. {{ :​users:​wan2016pop.pdf |pdf}} 
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-15. “Turbulence and proton-electron heating in kinetic plasma” ​ 
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-Matthaeus, W. H., T. N. Parashar, M Wan and **P. Wu**  
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-Astrophysical Journal Letters, 827 (1), L7 (5pp), 2016. {{ :​users:​matthaeus2016apjl.pdf |pdf}} 
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-16. “Energy transfer channels and turbulence cascade in Vlasov-Maxwell turbulence” ​ 
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-Y. Yang, W. H. Matthaeus, T. N. Parashar, **P. Wu**, M. Wan, Y. Shi, S. Chen, V. Roytershteyn,​ and W. Daughton 
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-Physical Review E, 95 (6), 061201 (5pp), 2017. {{ :​users:​yang2017pre.pdf |pdf}} 
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-17. “Exploring the statistics of magnetic reconnection X-points in kinetic particle-in-cell (PIC) turbulence” 
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-C. C. Haggerty, T. N. Parashar, W. H. Matthaeus, M. A. Shay, Y. Yang, M. Wan, **P. Wu**, and S. Servidio ​ 
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-Physics of Plasmas, 24 (10), 102308 (10pp), 2017. {{ :​users:​haggerty2017pop.pdf |pdf}} 
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-18. “Turbulent Heating Due to Magnetic Reconnection” ​ 
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-M. A. Shay, C. C. Haggerty, W. H. Matthaeus, T. N. Parashar, M. Wan and **P. Wu** 
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-Phys. of Plasmas, 25 (1), 012304 (9pp), 2018. {{ :​users:​shay2018pop.pdf |pdf}} 
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-====Books and Book Chapters==== 
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-19. “Ion Kinetics at the Heliospheric Termination Shock” 
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-**Wu, P.** 
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-Ph.D. Dissertation (187 pp), Boston University, 5/12/2009. {{ :​users:​wu2009dec05.dissertation.pdf |pdf}} 
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-20. “Physical processes in the outer heliosphere” 
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-Lee, M. A., H. J. Fahr, H. Kucharek, E. Moebius, C. Prested, N. Schwadron, **P. Wu** 
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-Space Science Reviews, 146 (1), 275-294, 2009. {{ :​users:​lee2009ssr.pdf |pdf}} 
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-21. “The Interstellar Boundary Explorer Science Operations Center” 
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-Schwadron, N. A., G. Crew, R. Vanderspek, F. Allegrini, M. Bzowski, R. DeMagistre, G. Dunn, H. Funsten, S. A. Fuselier, K. Goodrich, M. Gruntman, J. Hanley, J. Heerikuisen,​ D. Heirtlzer, P. Janzen, H. Kucharek, G. Loeffler, K. Mashburn, K. Maynard, D. J. McComas, E. Moebius, C. Prested, B. Randol, D. Reisenfeld, M. Reno, E. Roelof and **P. Wu**  
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-Space Science Reviews, 146 (1-4), 207-234, 2009. {{ :​users:​schwadron2009ssr.pdf |pdf}} 
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-In addition, I was acknowledged for providing my kinetic simulation data for this publication: ​ 
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-“Why does Steady-State Magnetic Reconnection have a Maximum Local Rate of Order 0.1?”, Yi-Hsin Liu, M. Hesse, F. Guo, W. Daughton, H. Li, P. A. Cassak, and M. A. Shay, Phys. Rev. Lett., 118, 085101, 2017. 
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-=====Useful Links===== 
-[[https://​sdo.gsfc.nasa.gov|The Sun Now]] 
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-[[https://​www.helioviewer.org|Helioviewer]] 
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-[[https://​solarmonitor.org|Solar Monitor]] 
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-[[http://​suntoday.lmsal.com/​suntoday/​|The Sun Today]] 
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-=====HG Awareness===== 
-[[http://​www.hyperemesis.org/​|http://​www.hyperemesis.org]] 
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-=====unicef:​ for every child===== 
-[[https://​www.unicef.org/​breastfeeding/​|https://​www.unicef.org/​breastfeeding/​]] 
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-=====Contact===== 
-Email: penny.wu@qub.ac.uk 
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-Phone: +44 28 9097 3213 
users/pennywu.1529013466.txt.gz · Last modified: 2018/06/14 21:57 by Penny Wu

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