NSSDCA ID: SOUV-00025
Availability: At NSSDC, Ready for Offline Distribution (or Staging if Digital)
Time span: 1965-12-01 to 1967-11-05
This data set was supplied by the Arcetri Astrophysical Observatory in Italy, which has received telemetered data direct from SOLRAD satellites since 1964. The data set is published in hard copy form as "X-ray Fluxes from the SOLRAD 8 Satellite from December 1965 to November 1967," by M. Landini, B. Monsignori Fossi, D. Russo, and G.L. Tagliaferri, Fascicolo 91, Osservazioni e Memorie dell' Osservatorio Astrofisico di Arcetri, September 1968, Bologna, Italy (B08026-000A). The document consists of tabulated daily X-ray fluxes in the 44- to 60-A, 8- to 20-A, and 0- to 8-A channels in units of 1.E-1, 1.E-3, and 1.E-4 erg/(sq cm-s), respectively. These daily fluxes were obtained by selecting fluxes that ranged between the minimum value for that day and 1.25 times that minimum value and then taking the arithmetic mean. The data were reduced from counts to fluxes by assuming that the 44- to 60-A spectrum could be represented by a one-half million Kelvin gray body and the 8- to 20-A and 0- to 8-A spectra by a two million Kelvin gray body. The maximum error in the flux values is plus or minus 20%, mainly due to reading errors. Blanks in the data mean (1) aspect angles > 30 deg, (2) malfunctions in the receiving station, (3) extremely quiet days, (4) very high activity, and (5) satellite in the earth's shadow. The data were processed with an IBM 1620 computer and cover the period December 1, 1965, through November 30, 1967. For more information on this data set, contact Dr. Robert Kreplin, Naval Research Laboratory, 4555 Overlook Avenue SW, Washington, DC 20375.
Questions and comments about this data collection can be directed to: Coordinated Request and User Support Office
Name | Role | Original Affiliation | |
---|---|---|---|
Mr. M. Landini | General Contact | Osservatorio Astrofisico di Arcetri |