2.7.2 https://spdx.org/licenses/ SPDX CC0-1.0 https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions spase://NASA/NumericalData/IBEX/Hi/H3/Release18/CG/SP/Antiram/Median/Ribbon/P1Y NASA NumericalData IBEX High Energy Neutral Atom Imager (Hi) Data Release 18, Compton-Getting corrected, Survival Probability corrected, ANTIRAM Median Ribbon separated ENA Maps, Level H3, one-year Data IBEX_H3_ENA_HI_R18_CG_SP_ANTIRAM_MEDIAN_RIBBON_1YR https://doi.org/10.48322/dxnc-gq52 2026-10-03T19:00:09Z 2025-07-07T12:34:56.789Z Initial release of metadata, ADAPT generated, LFB 2026-09-28T12:34:56.789Z Curated and validated against SPASE 2.7.2, OK 2026-10-03T19:00:09Z Changed http to https in top-level schemaLocation attribute. Added PublicationInfo and DOI. tlk IBEX-Hi Release 18 one-year ANTIRAM hydrogen ENA maps for the median Ribbon separated-map product from the Release 18 Ribbon/GDF separation. Compton-Getting correction has been applied to account for spacecraft motion, and survival-probability correction has been applied to account for ENA losses during transport and to scale fluxes from the IBEX observing location near 1 AU to approximately 100 AU. The data cover 2009 through 2022, with measurement intervals spanning 2008-12-25 through 2022-12-26, on a 60 by 30 Solar Ecliptic longitude-latitude grid for IBEX-Hi energy channels 2-6. The channel 2-6 FWHM energy ranges are 0.52-0.95, 0.84-1.55, 1.36-2.50, 1.99-3.75, and 3.13-6.00 keV; the nominal energies are 0.71, 1.11, 1.74, 2.73, and 4.29 keV. The source metadata identifies this as the median Ribbon separated-map variant. The CDF variables described by this record include coordinate/time support arrays and total exposure-time maps for channels 2-6, including virtual CDAWeb alternate views. The CDAWeb ProductKey is IBEX_H3_ENA_HI_R18_CG_SP_ANTIRAM_MEDIAN_RIBBON_1YR. Please acknowledge the IBEX Mission Principal Investigator, Dr. David J. McComas, the IBEX data providers, and NASA/GSFC SPDF/CDAWeb when using these data. David J. McComas 2026-10-03T15:18:03.000Z Space Physics Data Facility spase://SMWG/Person/David.J.McComas PrincipalInvestigator IBEX The Interstellar Boundary Explorer mission https://ibex.princeton.edu/ IBEX Mission, Instrument, and Data Release Descriptions en IBEX Data Release 18 https://ibex.princeton.edu/DataRelease18 IBEX Data Release 18 information, data structure, and naming conventions en spase://SMWG/Repository/NASA/GSFC/SPDF Online Open https://spdx.org/licenses/ SPDX CC0-1.0 https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products FTPS from SPDF (not with most browsers) ftps://spdf.gsfc.nasa.gov/pub/data/ibex/cdf/h3/release18/ena_hi_cg_sp_antiram_median_ribbon_1yr/ Access to Data in CDF Format via ftps from SPDF HTTPS from SPDF https://spdf.gsfc.nasa.gov/pub/data/ibex/cdf/h3/release18/ena_hi_cg_sp_antiram_median_ribbon_1yr/ Access to Data in CDF Format via https from SPDF CDAWeb https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=IBEX_H3_ENA_HI_R18_CG_SP_ANTIRAM_MEDIAN_RIBBON_1YR&index=sp_phys IBEX_H3_ENA_HI_R18_CG_SP_ANTIRAM_MEDIAN_RIBBON_1YR Access to ASCII, CDF, and plots via NASA/GSFC CDAWeb CDF None None ibex_h3_ena_hi_r18_cg_sp_antiram_median_ribbon_1yr_%Y%m%d_%Q.cdf Please acknowledge the Principal Investigator Dr. David J. McComas. Please acknowledge the Data Providers and CDAWeb when using these Data. spase://SMWG/Repository/NASA/GSFC/SPDF Online Open https://spdx.org/licenses/ SPDX CC0-1.0 https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products CDAWeb HAPI Server https://cdaweb.gsfc.nasa.gov/hapi IBEX_H3_ENA_HI_R18_CG_SP_ANTIRAM_MEDIAN_RIBBON_1YR Web service access to this product using the HAPI interface. CSV Please acknowledge the Principal Investigator D.J. McComas, the IBEX data providers, and NASA/GSFC SPDF/CDAWeb when using these data. Calibrated spase://SMWG/Instrument/IBEX/Hi NeutralAtomImages 2008-12-25T00:00:00.000Z 2022-12-26T00:00:00.000Z P1Y Interstellar Survival-probability correction has been applied to scale ENA fluxes from the IBEX observing location near 1 AU to approximately 100 AU, and Compton-Getting correction for spacecraft motion has been applied. This resource contains the median Ribbon component from the Release 18 Ribbon/GDF separation. The median map is the best-guess separated solution; the lower and upper maps are reasonable-value alternatives rather than formal statistical confidence intervals. The ObservedRegion value Interstellar reflects the published interpretation of the Ribbon source as beyond the heliopause. The _plasma variables are virtual CDAWeb alternate views of the corresponding source arrays. Epoch Start Time Epoch CDF epoch time for the start of each one-year measurement interval. P1Y day-month-year hour:minute:second Epoch CDF EPOCH TIME LinearScale 1990-01-01T00:00:00.000Z 2029-12-31T23:59:59.999Z 9999-12-31T23:59:59.999Z Temporal Epoch Stop Time Epoch2 CDF epoch time for the end of each one-year measurement interval. P1Y day-month-year hour:minute:second Epoch2 CDF EPOCH TIME LinearScale 1990-01-01T00:00:00.000Z 2029-12-31T23:59:59.999Z 9999-12-31T23:59:59.999Z Temporal Starting Map Number Time series defined by using: Epoch mapnum Starting six-month IBEX map number used to define each one-year map or average. P1Y # TimeSeries Starting Map Number I5 LinearScale 0 65534 65535 Other Solar Ecliptic Latitude Bin Number latitude_bin Solar Ecliptic latitude bin number for the 30-bin, six-degree full-sky map grid. # # I5 LinearScale 30 1 30 65534 Other Solar West Ecliptic Longitude Bin Number longitude_bin Solar West Ecliptic longitude bin number for the 60-bin, six-degree full-sky map grid. # # I5 LinearScale 60 1 60 65535 Other Solar Ecliptic Latitude Latitude Solar Ecliptic latitude at the center of each six-degree map bin. ° Spherical SE SE Latitude F6.0 LinearScale 30 -90 90 -1.0e+31 Positional Solar West Ecliptic Longitude West_Longitude Solar West Ecliptic longitude at the center of each six-degree map bin. ° Spherical SE SWE Longitude F6.0 LinearScale 60 0 360 -1.0e+31 Positional Solar East Ecliptic Longitude East_Longitude Solar East Ecliptic longitude corresponding to the Solar West Ecliptic longitude map grid. ° Spherical SE SEE Longitude F6.0 LinearScale 60 0 360 -1.0e+31 Positional Starting Orbit Number Time series defined by using: Epoch orbit1 Starting IBEX orbit or arc associated with each one-year measurement interval. P1Y # Starting Orbit I5 LinearScale 0 65534 65535 Other Ending Orbit Number Time series defined by using: Epoch orbit2 Ending IBEX orbit or arc associated with each one-year measurement interval. P1Y # Ending Orbit I5 LinearScale 0 65534 65535 Other Total Exposure Time, IBEX-Hi Energy Channel 2, approximately 0.71 keV One-year map defined by Epoch; dimension 1 is West_Longitude and dimension 2 is Latitude. Fexp2 Total exposure time for the one-year median Ribbon separated map, IBEX-Hi energy channel 2, FWHM range 0.52-0.95 keV. P1Y s Spherical SE Exposure Time E11.3 LinearScale 60 30 -1.0e+31 Temporal Total Exposure Time Alternate View, IBEX-Hi Energy Channel 2, approximately 0.71 keV One-year map defined by Epoch; dimension 1 is West_Longitude and dimension 2 is Latitude. Fexp2_plasma Virtual CDAWeb X/Y alternate view of Fexp2; it represents the same total exposure-time map for the median Ribbon separated product. P1Y s Spherical SE Exposure Time E11.3 LinearScale 60 30 -1.0e+31 Temporal Total Exposure Time, IBEX-Hi Energy Channel 3, approximately 1.11 keV One-year map defined by Epoch; dimension 1 is West_Longitude and dimension 2 is Latitude. Fexp3 Total exposure time for the one-year median Ribbon separated map, IBEX-Hi energy channel 3, FWHM range 0.84-1.55 keV. P1Y s Spherical SE Exposure Time E11.3 LinearScale 60 30 -1.0e+31 Temporal Total Exposure Time Alternate View, IBEX-Hi Energy Channel 3, approximately 1.11 keV One-year map defined by Epoch; dimension 1 is West_Longitude and dimension 2 is Latitude. Fexp3_plasma Virtual CDAWeb X/Y alternate view of Fexp3; it represents the same total exposure-time map for the median Ribbon separated product. P1Y s Spherical SE Exposure Time E11.3 LinearScale 60 30 -1.0e+31 Temporal Total Exposure Time, IBEX-Hi Energy Channel 4, approximately 1.74 keV One-year map defined by Epoch; dimension 1 is West_Longitude and dimension 2 is Latitude. Fexp4 Total exposure time for the one-year median Ribbon separated map, IBEX-Hi energy channel 4, FWHM range 1.36-2.50 keV. P1Y s Spherical SE Exposure Time E11.3 LinearScale 60 30 -1.0e+31 Temporal Total Exposure Time Alternate View, IBEX-Hi Energy Channel 4, approximately 1.74 keV One-year map defined by Epoch; dimension 1 is West_Longitude and dimension 2 is Latitude. Fexp4_plasma Virtual CDAWeb X/Y alternate view of Fexp4; it represents the same total exposure-time map for the median Ribbon separated product. P1Y s Spherical SE Exposure Time E11.3 LinearScale 60 30 -1.0e+31 Temporal Total Exposure Time, IBEX-Hi Energy Channel 5, approximately 2.73 keV One-year map defined by Epoch; dimension 1 is West_Longitude and dimension 2 is Latitude. Fexp5 Total exposure time for the one-year median Ribbon separated map, IBEX-Hi energy channel 5, FWHM range 1.99-3.75 keV. P1Y s Spherical SE Exposure Time E11.3 LinearScale 60 30 -1.0e+31 Temporal Total Exposure Time Alternate View, IBEX-Hi Energy Channel 5, approximately 2.73 keV One-year map defined by Epoch; dimension 1 is West_Longitude and dimension 2 is Latitude. Fexp5_plasma Virtual CDAWeb X/Y alternate view of Fexp5; it represents the same total exposure-time map for the median Ribbon separated product. P1Y s Spherical SE Exposure Time E11.3 LinearScale 60 30 -1.0e+31 Temporal Total Exposure Time, IBEX-Hi Energy Channel 6, approximately 4.29 keV One-year map defined by Epoch; dimension 1 is West_Longitude and dimension 2 is Latitude. Fexp6 Total exposure time for the one-year median Ribbon separated map, IBEX-Hi energy channel 6, FWHM range 3.13-6.00 keV. P1Y s Spherical SE Exposure Time E11.3 LinearScale 60 30 -1.0e+31 Temporal Total Exposure Time Alternate View, IBEX-Hi Energy Channel 6, approximately 4.29 keV One-year map defined by Epoch; dimension 1 is West_Longitude and dimension 2 is Latitude. Fexp6_plasma Virtual CDAWeb X/Y alternate view of Fexp6; it represents the same total exposure-time map for the median Ribbon separated product. P1Y s Spherical SE Exposure Time E11.3 LinearScale 60 30 -1.0e+31 Temporal