Table · dataset · 2026
Radio Frequency Spectrometer LFR Quasi-thermal noise, Data
Listed in NASA Data Portal
Quasi-thermal noise (QTN) spectroscopy is an efficient tool for measuring in situ macroscopic plasma properties in space, using a passive wave receiver at the ports of an electric antenna [1].
Description
The Radio Frequency Spectrometer (RFS) is a dual channel digital spectrometer, designed for both remote sensing of radio waves and in situ measurement of electrostatic fluctuations using signals from the V1-V4 electric field antennas [2].
Usually, the two RFS channels record differences between V1-V2 and V3-V4 antennas (dipole mode). It allows us to retrieve plasma properties independently by two sets of antennas. The plasma line is automatically identified in a frequency range determined by the density model based on spacecraft distance from the Sun.
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The frequency range is manually adjusted for intervals when the plasma line occurs at lower or higher frequencies than predicted. We assume that the plasma line is well identified if detected at the same frequency by the V1-V2 and V3-V4 dipoles simultaneously. We assume that the plasma frequency is equal to the geometric mean of the plasma line and the preceding frequency channel.
In other words, the plasma frequency corresponds to the steepest positive slope below the plasma line. The provided error bars are calculated from the frequency resolution of the RFS instrument. [1] Meyer-Vernet, N., Issautier, K., and Moncuquet, M. (2017).
Quasi-thermal noise spectroscopy: The art and the practice. Journal of Geophysical Research: Space Physics, 122, 7925-7945. doi.org/10.1002/2017ja024449 [2] Bale, S. D., Goetz, K., Harvey, P. R., Turin, P., Bonnell, J. W., Dudok de Wit, T., et al. (2016). The FIELDS instrument suite for Solar probe plus.
Measuring the coronal plasma and magnetic field, plasma waves and turbulence, and radio signatures of Solar transients. Space Science Reviews, 204(1-4), 49-82. doi.org/10.1007/s11214-016-0244-5
Links
Get the data
- Resource spdf.gsfc.nasa.gov/pub/data/psp/fields/l3/rfs_lfr_qtn ↗
download · from data nasa gov
- Resource spdf.gsfc.nasa.gov/pub/data/psp/fields/l3/rfs_lfr_qtn ↗
download · from data nasa gov
- Resource cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=PSP_FLD_L3_RFS_LFR_QTN&index=sp_phys ↗
download · from data nasa gov
- Resource cdaweb.gsfc.nasa.gov/hapi ↗
download · from data nasa gov
- Resource link.springer.com/article/10.1007/s11214-016-0244-5 ↗
download · from data nasa gov
- Resource fields.ssl.berkeley.edu/data ↗
download · from data nasa gov
- Resource doi.org/10.1002/2017ja024449 ↗
download · from data nasa gov
- Resource helio.data.nasa.gov/dataset/ParkerSolarProbe_FIELDS_RFS_LFR_Level3_QuasiThermalNoi… ↗
download · from data nasa gov
- Resource hpde.io/NASA/NumericalData/ParkerSolarProbe/FIELDS/RFS_LFR/Level3/Quas… ↗
download · from data nasa gov
Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/radio-frequency-spectrometer-lfr-quasi-thermal-noise-d… ↗
landing page · from data nasa gov
Catalogue records · 1
- CKAN API data.nasa.gov/api/3/action/package_show?id=d7d8aad7-c865-4a70-8b61-83760d5ef… ↗
metadata API · from data nasa gov
Topics
- From keywords
- Astronomy & Astrophysics · Earth & Environmental Science · Ocean & Atmospheric Science · Physics
- Inferred from text
- Pollution and contamination 69% · Satellite remote sensing 65%
Provenance · 1 source records, 12 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Data Portal | d7d8aad7-c865-4a70-8b61-83760d5ef119 | 9 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| concepts[field].anzsrc:group:4105 | enrichment · data nasa gov | taxonomy-embedding@1.0.0 | title+keywords+description (69%) |
| concepts[field].local:field:astronomy | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:ocean-atmospheric | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:physics | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[modality].local:modality:remote-sensing | enrichment · data nasa gov | keyword-concept-rules@1.0.0 | title+description (65%) |
| created_date | source · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| description | source · data nasa gov | connector:data_nasa_gov@1.0.0 | /notes |
| license_text | source · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| publication_date | source · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| title | source · data nasa gov | connector:data_nasa_gov@1.0.0 | /title |
| updated_date | source · data nasa gov | connector:data_nasa_gov@1.0.0 |