Parker Solar Probe: ISOIS EPI-Lo Energetic Particle Energy Measurements

NASA's Parker Solar Probe mission provides Level 2 data on energetic particle energy from the Sun, collected by the Integrated Science Investigation of the Sun (ISOIS) EPI-Lo instrument. The data includes 1-second resolution measurements with epoch time tags indicating the midpoint of integration. The dataset is maintained by the University of New Hampshire Science Operations Center and is subject to ongoing calibration updates.

Use Cases

• Analyzing solar energetic particle flux and energy spectra based on the 1-second particle energy data.
• Studying the correlation between particle events and solar activity using the time-tagged measurements.
• Modeling the near-Sun radiation environment for mission planning based on the energetic particle observations.
• Conducting pitch angle distribution studies by combining this data with magnetic field information from the PSP FIELDS team.

Strengths

• Data is from a dedicated NASA solar mission, the Parker Solar Probe, providing direct measurements of the near-Sun environment.
• Public data reflects current instrument calibration as determined by the ISOIS science team, with updates planned.
• Includes pitch angle calculations enabled by integration with magnetic field data from another instrument suite.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for large-scale statistical analysis.
• Data is subject to ongoing calibration; users must check for updates to ensure they have the latest version.

Provenance

Source

National Aeronautics and Space Administration (NASA), Parker Solar Probe mission, ISOIS Science Team (PI: D. J. McComas, Princeton University).

Collection Method

Collected by the Energetic Particle Instrument-Lo (EPI-Lo) onboard the Parker Solar Probe spacecraft.

Time Range

Covers the operational timeline of the Parker Solar Probe mission; specific dates are not provided in the input.

Freshness

Last updated 2026-03-13 05:43:16.194002; freshness should be verified.

Geography

Spatial coverage is the trajectory of the Parker Solar Probe, focusing on the near-Sun environment and inner heliosphere.