Dr Homayon Aryan
Research Associate

Photo: Dr Homayon AryanAddress:
Dr Homayon Aryan
Space Systems Laboratory,
Department of Automatic Control and Systems Engineering
University of Sheffield
Sheffield
S1 3JD
Tel: (+44) (0)114 222 5234
Email: h.aryan@sheffield.ac.uk
Web: https://www.researchgate.net/profile/Homayon_Aryan
Room: B22, Amy Johnson Building


Biopic

Dr Homayon Aryan graduated in 2011 from the University of Sheffield with a class I masters degree in Aerospace Engineering with private pilot instructions. He then pursued his interest in space research and obtained a PhD in 2015 in space physics: particle acceleration near geospace at the University of Sheffield. He won a prestigious NASA postdoctoral Fellowship award to expand his research at NASA Goddard Space Flight Center, USA, from May 2015 to June 2018. At NASA Dr Aryan collaborated with many leading scientists in the field at international level and published a number of scientific papers in leading journals, such as Science Advances, Journal of Geophysical Research, Space Weather, and Space Science Review. He is also serving as an editor for the journal of Space Weather and Space Climate. Dr Aryan is actively involved in two upcoming NASA missions (SMILE and STORM) since 2015. Dr Aryan is specialised in analysis of satellite data from unprecedented multi-point coverage provided by current NASA and ESA missions, to investigate outstanding questions concerning the nature of plasma waves in the inner magnetosphere and how they respond to variable solar wind conditions and geomagnetic activity. Space weather is crucial to the operation of spacecraft and aircrafts on polar routes. Plasma waves, such as chorus and plasmaspheric hiss waves, play a direct and crucial role in the acceleration and loss of energetic electrons that ultimately change the dynamics of the radiation belts. Trapped energetic radiation belt electrons represent a serious hazard to the electronic components of satellites. The impact can be sever and could lead to permanent failure of individual subsystems, or even complete loss of the satellite. It is of great scientific and practical interest to understand and be able to accurately predict the variations and dynamics of the radiation belts to mitigate damage to satellites. Unsurprisingly, the radiation belts have been the main focal point of many scientific NASA and ESA missions. Dr Aryan's research is mainly focused on improving plasma wave models that will ultimately improve radiation belt modelling.

Education

  • 2011−2015 Ph.D. Space Physics: Particle Acceleration in Near Earth Geospace, The University of Sheffield, Sheffield, United Kingdom.
  • 2007−2011 MEng. (Class I) Aerospace Engineering with Private Pilots License, The University of Sheffield, Sheffield, United Kingdom.

Employment History

  • July 2018−present Research Associate, The University of Sheffield, Sheffield, UK.
  • May 2015−June 2018 NASA Postdoctoral Fellow, NASA GSFC, Maryland, USA.

Awards

  • 2015-2018: NASA Postdoctoral Program Fellowship, NASA.
  • 2011-2015: EPSRC Doctoral Training Grant Award. United Kingdom.
  • 2014: ESA Student Travel Grant for COSPAR 2014, Moscow, Russia.

Major Projects

  • 2015-present: SMILE. A future NASA/ESA mission.
  • 2015-present: STORM. A future NASA CubeSat mission.

Journal Referee

  • 2014-present: Journal of Geophysical Research: Space Physics.
  • 2014-present: Space Weather.
  • 2014-present: Geophysical Research Letters.

Journal Editor

  • 2017-present: Journal of Space Weather and Space Climate.

Professional Membership

  • American Geophysical Union.
  • European Geosciences Union.
  • IEEE.
  • Royal Aeronautical Society.

Publications (selected)

  1. Aryan, H., Walker, S. W., Balikhin, M. A. (in press). Equatorial magnetosonic waves observed by Cluster satellites: The Chirikov resonance overlap criterion. J. Geophys. Res. Space Physics.
  2. 2. Dimmock, A. P.,.. Aryan, H.,.. (2019). Direct evidence of nonstationary collisionless shocks in space plasmas. Science Advances, 5, 2, doi: 10.1126/sciadv.aau9926.
  3. Sibeck, D. G.,... Aryan, H.,... (2018). Imaging Plasma Density Structures in the Soft X-Rays Generated by Solar Wind Charge Exchange with Neutrals (2018). Space Science Reviews, 214, doi: 10.1007/s11214-018-0504-7.
  4. Aryan, H., Sibeck, D. G., Kang, S. B., Balikhin, M. A., Fok, M. C., Agapitov, O., Komar, C. M., Kanekal, S. G. Nagai, T. (2017) CIMI simulation of fluxes using multi- parameter chorus and plasmaspheric hiss distribution models. J. Geophys. Res. Space Physics, 122, 9344-9357, doi: 10.1002/2017JA024159.
  5. Boynton, R. J., Aryan, H., Walker, S. N., Krasnoselskikh, V., Balikhin, M. A. (2018). The influence of solar wind and geomagnetic indices on Lower Band Chorus emissions in the inner magnetosphere. J. Geophys. Res. Space Physics, doi: 2018JA025704.
  6. Aryan, H., Sibeck, D. G., Balikhin, M. A., Agapitov, O. Kletzing, C. A. (2016) Observation of chorus waves by the Van Allen Probes: dependence on solar wind parameters and the scale size. J. Geophys. Res., 121, 7608-7621, doi: 10.1002/2016JA022775.
  7. Balikhin, M. A., Rodriguez, J. V., Boynton, R. J., Walker, S. N., Aryan, H., Sibeck, D. G. Billings, S. A. (2016), Comparative analysis of NOAA REFM and SNB 3 GEO tools for the forecast of the fluxes of high energy electrons at GEO. Space Weather, 14, 22-31, doi: 10.1002/2015SW001303.
  8. Aryan, H., Yearby, K., Balikhin, M. A., Agapitov, O. V., Krasnoselskikh, V., and Boynton, R. (2014), Statistical study of chorus wave distributions in the inner magneto- sphere using Ae and solar wind parameters, J. Geophys. Res. Space Phys., 119, 6131-6144, doi: 10.1002/2014JA019939.
  9. Aryan, H., Boynton R. J., and Walker S. N. (2013), Analysis of trends between solar wind velocity and energetic electron fluxes at geostationary orbit using the reverse arrangement test, J. Geophys. Res. Space Phys., 118, 636-641, doi: 10.1029/2012JA018216.
  10. Aryan, H., Balikhin, M. A., Taktakishvili, A., and Zhang, T. L. (2014), Observation of shocks associated with CMEs in 2007. Ann. Geophys., 3, 223-230, doi: 0.5194/angeo- 32-223-2014.

Presentations (selected)

  1. Aryan, H., Sibeck, D. G., Balikhin, M. A., (2018) Chorus waves during Van Allen Probes lapping events. Presentation for AGU Fall 2018.
  2. Aryan, H., Sibeck, D. G., Kang, S. B., Balikhin, M. A., Fok, M. C., Agapitov, O., Komar, C. M., Kanekal, S. G. Nagai, T. (2018) CIMI simulation of fluxes using multi- parameter chorus and plasmaspheric hiss distribution models. Presentation for EGU 2018.
  3. Aryan, H., Sibeck, D. G., Kang, S. B., Balikhin, M. A., Fok, M. C., Agapitov, O., Komar, C. M., Kanekal, S. G. Nagai, T. (2017) Application of multi-parameter chorus and plasmaspheric hiss wave models in radiation belt modeling. Presentation for AGU Fall 2017.
  4. Aryan, H., Sibeck, D. G., Balikhin, M. A., Agapitov, O. Kletzing, C. A. (2017) Observation of chorus waves during close separation between the two Van Allen Probes. Presentation for SWG 2017.
  5. Aryan, H., Sibeck, D. G., Kang, S. B., Balikhin, M. A., Fok, M. C., Agapitov, O., Komar, C. M., Kanekal, S. G. Nagai, T. (2017) CIMI simulation of fluxes using multi- parameter chorus and plasmaspheric hiss distribution models. Presentation for GEM 2017.