SWP Study Guide 2026
Everything you need to pass the SWP exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 SWP Exam Format at a Glance
📚 SWP Topics to Study (22)
✍️ Sample SWP Questions & Answers
1. The 'SEA' (superposed epoch analysis) technique in solar wind research is used to:
SEA stacks many events aligned at a defined epoch (e.g., storm sudden commencement) and averages them to reveal characteristic solar wind parameter profiles associated with that event type.
2. Approximately how long does it take for ~10 MeV solar energetic protons to travel from the Sun to Earth along the Parker spiral magnetic field?
~10 MeV protons travel at roughly 14% the speed of light along the ~1.2 AU Parker spiral path, arriving approximately 1–2 hours after acceleration, compared to ~8 minutes for light or ~30 minutes for >500 MeV particles.
3. The L1 Lagrange point (~1.5 million km sunward of Earth) is the preferred location for space weather monitors because:
L1 is the neutral gravitational point between Earth and Sun where a satellite can maintain position with minimal fuel while measuring the undisturbed solar wind before it reaches Earth.
4. Total Electron Content (TEC) maps of the ionosphere are derived primarily from:
Thousands of dual-frequency GNSS receivers measure the ionospheric signal delay difference between two frequencies; since delay is dispersive, the difference directly gives TEC along each ray path.
5. The Two-Class paradigm of SEP events distinguishes impulsive from gradual events primarily by examining:
Impulsive events show strongly enhanced Fe/O ratios and dramatic ³He enrichment (up to 10,000× normal solar wind values), while gradual events display near-coronal or solar wind composition, reflecting different acceleration mechanisms.
6. Which parameter is most useful for assessing satellite charging risk at geostationary orbit?
Relativistic electron fluence (>2 MeV) is the key driver of deep dielectric charging inside GEO satellite materials.