urn:nasa:pds:jno-jad-fitted-tofsp:data:fits_heavies_10min 0.1 1.24.0.0 Product_Observational 2025 This is the fitted plasma parameters for 4 heavy ions, S^{+}, m/q=16=24/1.5, S^{+++} and O^{+}, all with a shared Velocity but separte Temperatures. Robert J. Wilson 0000-0001-9276-2368 1 Laboratory for Atmospheric and Space Physics https://ror.org/01fcjzv38 2025-12-11 0.1 This is the first version for PDS Peer Review. 2017-02-01T14:56:52.173Z 2021-07-21T01:43:32.990Z Science Derived Particles Ions Plasma Juno Mission urn:nasa:pds:context:investigation:mission.juno data_to_investigation Juno Host urn:nasa:pds:context:instrument_host:spacecraft.jno is_instrument_host Jovian Auroral Distributions Experiment Instrument urn:nasa:pds:context:instrument:jade.jno is_instrument Jupiter Planet urn:nasa:pds:context:target:planet.jupiter data_to_target Ions Density Ions Velocity Ions Temperature 10.1016/j.icarus.2024.116006 Wilson, R.J. (2024), Jovian current disk crossings as observed by Juno JADE-I, Icarus, 413, 116006 This paper investigates jovian current disk properties utilizing two complementary Juno JADE-I data sets. We set out to extract plasma parameters for multiple ion species: H+, S+, S+++, O++ and O+ or S++. The JADE-I Time-of-Flight (TOF) sensor has little directional information yet can separate out ion species by mass per charge, however O+ and S++ have the same mass to charge so are represented by a single average ion of equivalent mass per charge. The JADE-I SPECIES data set has coarse mass per charge information yet is directional. By utilizing both data sets we can extract densities, velocities and temperatures using forward model techniques and assuming a Maxwellian distribution. However, it became apparent that the proton distributions were inadequately represented by a single Maxwellian distribution, being far too broad in energy and/or having multiple distributions, such that numerical moments were used to derive proton properties. The forward model technique was used on the remaining heavy ions, with a singular distribution for each ion species but a shared velocity. Both Maxwellian and Kappa distributions were investigated to see how well they represented the data. While a high energy tail can be readily observed in the TOF data set, the signal was low, and it was difficult to identify the same tail in the SPECIES data set. After investigation, it was found that assuming Kappa distributions had little benefit over assuming Maxwellian distributions, therefore the main forward model analysis was carried out assuming 4 co-moving Maxwellian distributed heavy ion species. The main study was for Juno orbits 5 to 34, where the trajectories had full current disk crossings outside of 20 jovian radii. Comparing the velocities of the heavy ion fits to the protons numerical moments gave good agreement, endorsing both analysis techniques. Radial profiles of plasma parameters of the current disk are provided, that highlight how the O+ and S++ ions are the dominant ion species with relative ion composition fixed over these radial distances. If the heavy ions were to be treated as an average single ion species, they would have a mass to charge of 15.1 amu/q for the radial range 23–63 jovian radii. FITS_HEAVIES_10MIN.CSV 2025-03-19 943579 7805d85fe21b83ea353c9b52d5fe9d4b

0 487 PDS DSV 1

487 PDS DSV 1 3082 Carriage-Return Line-Feed Comma 28 0 UTC 1 ASCII_Date_Time_DOY_UTC UTC UTC timestamp at center (not start) of record. Format is yyyy-dddTHH:MM:SS.sssZ where yyyy = year, ddd = day of year, HH = hour, MM = minute, SS.sss = decimal seconds to millisecond resolution. Note: Duration of record is 10 minutes, centered on UTC. This record covers the period starting at UTC - 5 minutes and ending at UTC + 5 minutes. 0001-001T00:00:00.000Z COST 2 ASCII_Real %8.4f Cost Function. The value minimized to locate the best-fit. Here we use a Reduced Chi-Square as the cost function. -99.9999 300.0000 0.0100 V_JSSRTP_KMPS_R 3 ASCII_Real %9.3f km/s Velocity R component in the JSSRTP frame, in km/s. -9999.999 1000.000 -1000.000 V_JSSRTP_KMPS_T 4 ASCII_Real %9.3f km/s Velocity T component in the JSSRTP frame, in km/s. -9999.999 1000.000 -1000.000 V_JSSRTP_KMPS_P 5 ASCII_Real %9.3f km/s Velocity P component in the JSSRTP frame, in km/s. -9999.999 1000.000 -1000.000 S32_1_N_CC 6 ASCII_Real %9.3f 1/(cm^3) S^{+} Number density in units of 1/cm^3. [A value of 0.000 represents a non-zero value that was less than 0.0005.] -9999.999 210.000 0.000 S32_1_TEMP_EV 7 ASCII_Real %9.3f eV S^{+} Temperature in units of eV. [A value of 0.000 represents a non-zero value that was less than 0.0005.] -9999.999 50000.000 0.000 S24_1p5_N_CC 8 ASCII_Real %9.3f 1/(cm^3) m/q=16 (with m=24, q = 1.5) Number density in units of 1/cm^3. [A value of 0.000 represents a non-zero value that was less than 0.0005.] -9999.999 210.000 0.000 S24_1p5_TEMP_EV 9 ASCII_Real %9.3f eV m/q=16 (with m=24, q = 1.5) Temperature in units of eV. [A value of 0.000 represents a non-zero value that was less than 0.0005.] -9999.999 50000.000 0.000 S32_3_N_CC 10 ASCII_Real %9.3f 1/(cm^3) S^{+++} Number density in units of 1/cm^3. [A value of 0.000 represents a non-zero value that was less than 0.0005.] -9999.999 210.000 0.000 S32_3_TEMP_EV 11 ASCII_Real %9.3f eV S^{+++} Temperature in units of eV. [A value of 0.000 represents a non-zero value that was less than 0.0005.] -9999.999 50000.000 0.000 S16_2_N_CC 12 ASCII_Real %9.3f 1/(cm^3) O^{++} Number density in units of 1/cm^3. [A value of 0.000 represents a non-zero value that was less than 0.0005.] -9999.999 210.000 0.000 S16_2_TEMP_EV 13 ASCII_Real %9.3f eV O^{++} Temperature in units of eV. [A value of 0.000 represents a non-zero value that was less than 0.0005.] -9999.999 50000.000 0.000 V_JSSRTP_SIGMA_KMPS_R 14 ASCII_Real %9.3f km/s Velocity R component uncertainty in the JSSRTP frame, in km/s. -9999.999 1000.000 -1000.000 V_JSSRTP_SIGMA_KMPS_T 15 ASCII_Real %9.3f km/s Velocity T component uncertainty in the JSSRTP frame, in km/s. -9999.999 1000.000 -1000.000 V_JSSRTP_SIGMA_KMPS_P 16 ASCII_Real %9.3f km/s Velocity P component uncertainty in the JSSRTP frame, in km/s. -9999.999 1000.000 -1000.000 S32_1_N_SIGMA_CC 17 ASCII_Real %9.3f 1/(cm^3) S^{+} Number density uncertainty in units of 1/cm^3. [A value of 0.000 represents a non-zero value that was less than 0.0005.] -9999.999 210.000 0.000 S32_1_TEMP_SIGMA_EV 18 ASCII_Real %9.3f eV S^{+} Temperature uncertainty in units of eV. [A value of 0.000 represents a non-zero value that was less than 0.0005.] -9999.999 50000.000 0.000 S24_1p5_N_SIGMA_CC 19 ASCII_Real %9.3f 1/(cm^3) m/q=16 (with m=24, q = 1.5) Number density uncertainty in units of 1/cm^3. [A value of 0.000 represents a non-zero value that was less than 0.0005.] -9999.999 210.000 0.000 S24_1p5_TEMP_SIGMA_EV 20 ASCII_Real %9.3f eV m/q=16 (with m=24, q = 1.5) Temperature uncertainty in units of eV. [A value of 0.000 represents a non-zero value that was less than 0.0005.] -9999.999 50000.000 0.000 S32_3_N_SIGMA_CC 21 ASCII_Real %9.3f 1/(cm^3) S^{+++} Number density uncertainty in units of 1/cm^3. [A value of 0.000 represents a non-zero value that was less than 0.0005.] -9999.999 210.000 0.000 S32_3_TEMP_SIGMA_EV 22 ASCII_Real %9.3f eV S^{+++} Temperature uncertainty in units of eV. [A value of 0.000 represents a non-zero value that was less than 0.0005.] -9999.999 50000.000 0.000 S16_2_N_SIGMA_CC 23 ASCII_Real %9.3f 1/(cm^3) O^{++} Number density uncertainty in units of 1/cm^3. [A value of 0.000 represents a non-zero value that was less than 0.0005.] -9999.999 210.000 0.000 S16_2_TEMP_SIGMA_EV 24 ASCII_Real %9.3f eV O^{++} Temperature uncertainty in units of eV. [A value of 0.000 represents a non-zero value that was less than 0.0005.] -9999.999 50000.000 0.000 SC_POS_R 25 ASCII_Real %7.3f Jupiter Radii Juno radial distance at time UTC, from Jupiter, in units of Jupiter Radii (Rj). (1 Rj = 71492.0 km) -99.999 130.000 1.000 SC_POS_LAT 26 ASCII_Real %7.3f deg Juno Latitude at time UTC, in both the IAU_JUPITER and JUNO_JSS frames, in units of degrees. (0 = Equatorial) (JUNO_JSS is a despun version of IAU_JUPITER, hence they have identical latitudes.) -99.999 90.000 -90.000 SC_POS_LOCAL_TIME 27 ASCII_Real %7.3f hr Juno (jovian) Local Time at time UTC, in units of hours. 00 = Midnight 06 = Dawn 12 = Noon 18 = Dusk -99.999 24.000 0.000 Quality Flag 28 ASCII_Integer %2d "Good" Quality Flag. 0 = Not a Good result 1 = Probably a Good result -1 = Unknown = MISSING_CONSTANT -1 1 0