Parker Solar Probe FIELDS: Low-Frequency Magnetic Field Spectra

PSP FIELDS Digital Fields Board (DFB) data provides calibrated power spectral densities for low-frequency magnetic fields measured by the Parker Solar Probe spacecraft. The Level 2 data products are calibrated for instrument gain and filter responses, with quantities expressed in nanoTesla squared per Hertz for magnetic fields. This dataset is produced by the National Aeronautics and Space Administration and was last updated in March 2026.

Use Cases

• Analyzing low-frequency magnetic field power spectra based on calibrated spectral densities.
• Studying solar wind wave modes and turbulence based on frequency and time-resolved spectral data.
• Investigating instrument-corrected signal trends at high frequencies as noted in the calibration description.
• Comparing magnetic field components across different solar orbits based on the described sensor coordinate systems.

Strengths

• Data is calibrated for multiple instrument responses including Hanning window, analog/digital filter gains, and bandwidth.
• Specific physical units (nanoTesla squared per Hertz) are defined for magnetic field quantities.
• Spectral data is duty-cycled and averaged with a described methodology for different data cadences.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Voltage sensor signals lack corrections for plasma sheath impedance and antenna effective length, as noted for Level 2 data.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Measured by the Searchcoil Magnetometer (SCM) on the Parker Solar Probe's FIELDS experiment.

Time Range

Covers solar orbits, with specific coordinate systems noted for orbits 1-2 and 3+.

Freshness

Last updated 2026-03-13 05:51:15.966766; freshness should be verified.

Geography

Data collected in space by the Parker Solar Probe spacecraft.