All Stories

  1. Association between EMIC wave occurrence and enhanced convection periods during ion injections

    Article • Geophysical Research Letters, January 2020, American Geophysical Union (AGU)

    Dr Alexa J Halford

  2. Developing the LDi and LCi Geomagnetic Indices, an Example of Application of the AULs Framework

    Article • Space Weather, January 2020, American Geophysical Union (AGU)

    Dr Alexa J Halford

  3. Ultralow frequency-wave induced losses

    Article • January 2020, Elsevier

    Dr Alexa J Halford

  4. The petitSat mission – Science goals and instrumentation

    Article • Advances in Space Research, December 2019, Elsevier

    Dr Alexa J Halford

  5. The Evolution of a Pitch‐Angle “Bite‐Out” Scattering Signature Caused by EMIC Wave Activity: A Case Study

    Article • Journal of Geophysical Research Space Physics, July 2019, American Geophysical Union (AGU)

    Dr Alexa J Halford

  6. Generation of EMIC Waves and Effects on Particle Precipitation During a Solar Wind Pressure Intensification With B z >0

    Article • Journal of Geophysical Research Space Physics, June 2019, American Geophysical Union (AGU)

    Dr Alexa J Halford

  7. The Space Physics Environment Data Analysis System (SPEDAS)

    Article • Space Science Reviews, January 2019, Springer Science + Business Media

    Dr Alexa J Halford

  8. Application usability levels: a framework for tracking project product progress

    Article • Journal of Space Weather and Space Climate, January 2019, EDP Sciences

    Dr Adam C Kellerman, Dr Alexa J Halford, Dr Sophie A. Murray

  9. How do interplanetary shock impact angles control the size of the geoeffective magnetosphere?

    Article • Advances in Space Research, January 2019, Elsevier

    Dr Alexa J Halford

  10. Snakes on a Spaceship - An Overview of Python in Heliophysics

    Article • Journal of Geophysical Research Space Physics, November 2018, American Geophysical Union (AGU)

    Dr Adam C Kellerman, Dr Alexa J Halford

  11. Pitch Angle Scattering and Loss of Radiation Belt Electrons in Broadband Electromagnetic Waves

    Article • Geophysical Research Letters, September 2018, American Geophysical Union (AGU)

    Dr Alexa J Halford, Dr Geoffrey D Reeves

  12. NASA and University of Houston’s Approach in Engaging and Developing Undergraduate Students’ Skills Through Undergraduate Student Instrumentation Project

    Article • September 2018, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Alexa J Halford

  13. Ion Injection Triggered EMIC Waves in the Earth's Magnetosphere

    Article • Journal of Geophysical Research Space Physics, June 2018, American Geophysical Union (AGU)

    Dr Alexa J Halford, Dr Geoffrey D Reeves

  14. Geomagnetically induced currents caused by interplanetary shocks with different impact angles and speeds

    Article • Space Weather, May 2018, American Geophysical Union (AGU)

    Dr Alexa J Halford

  15. The Role of Localized Compressional Ultra-low Frequency Waves in Energetic Electron Precipitation

    Article • Journal of Geophysical Research Space Physics, March 2018, American Geophysical Union (AGU)

    Dr Alexa J Halford

  16. The Undergraduate Student Instrumentation Project: A Foray into Instrument Design, Payload Fabrication, and Project Management

    Article • September 2017, American Institute of Aeronautics and Astronautics (AIAA)

    Dr Alexa J Halford, Michael Greer, Tri Nguyen, Edgar Bering

  17. Space physics and policy for contemporary society

    Article • Journal of Geophysical Research Space Physics, April 2017, American Geophysical Union (AGU)

    Dr Alexa J Halford

  18. Investigating energetic electron precipitation through combining ground‐based and balloon observations

    Article • Journal of Geophysical Research Space Physics, January 2017, American Geophysical Union (AGU)

    Dr Alexa J Halford

  19. EMIC waves and associated relativistic electron precipitation on 25-26 January 2013

    Article • Journal of Geophysical Research Space Physics, November 2016, American Geophysical Union (AGU)

    Dr Alexa J Halford, Dr Geoffrey D Reeves

  20. Dependence of EMIC wave parameters during quiet, geomagnetic storm, and geomagnetic storm phase times

    Article • Journal of Geophysical Research Space Physics, July 2016, American Geophysical Union (AGU)

    Dr Alexa J Halford

  21. BARREL observations of a solar energetic electron and solar energetic proton event

    Article • Journal of Geophysical Research Space Physics, May 2016, American Geophysical Union (AGU)

    Dr Alexa J Halford

  22. Interplanetary shocks and the resulting geomagnetically induced currents at the equator

    Article • Geophysical Research Letters, August 2015, American Geophysical Union (AGU)

    Dr Alexa J Halford

  23. Observations of coincident EMIC wave activity and duskside energetic electron precipitation on 18-19 January 2013

    Article • Geophysical Research Letters, July 2015, American Geophysical Union (AGU)

    Dr Alexa J Halford, Dr Geoffrey D Reeves

  24. Global-scale coherence modulation of radiation-belt electron loss from plasmaspheric hiss

    Article • Nature, June 2015, Nature

    Dr Alexa J Halford

  25. A summary of the BARREL campaigns: Technique for studying electron precipitation

    Article • Journal of Geophysical Research Space Physics, June 2015, American Geophysical Union (AGU)

    Dr Alexa J Halford

  26. Simulation of ULF wave-modulated radiation belt electron precipitation during the 17 March 2013 storm

    Article • Journal of Geophysical Research Space Physics, May 2015, American Geophysical Union (AGU)

    Dr Thiago V Brito, Dr Alexa J Halford

  27. BARREL observations of an ICME-shock impact with the magnetosphere and the resultant radiation belt electron loss

    Article • Journal of Geophysical Research Space Physics, April 2015, American Geophysical Union (AGU)

    Dr Alexa J Halford

  28. EMIC waves and plasmaspheric and plume density: CRRES results

    Article • Journal of Geophysical Research Space Physics, March 2015, American Geophysical Union (AGU)

    Dr Alexa J Halford

  29. New conjunctive CubeSat and balloon measurements to quantify rapid energetic electron precipitation

    Article • Geophysical Research Letters, November 2013, American Geophysical Union (AGU)

    Dr Alexa J Halford

  30. The Balloon Array for RBSP Relativistic Electron Losses (BARREL)

    Article • Space Science Reviews, March 2013, Springer Science + Business Media

    Dr Alexa J Halford

  31. EMIC wave activity during geomagnetic storm and nonstorm periods: CRRES results

    Article • Journal of Geophysical Research Atmospheres, December 2010, American Geophysical Union (AGU)

    Dr Alexa J Halford

  32. Latitudinal and seasonal variations of quasiperiodic and periodic VLF emissions in the outer magnetosphere

    Article • Journal of Geophysical Research Atmospheres, January 2004, American Geophysical Union (AGU)

    Dr Alexa J Halford