Engineering topics
Wende, C. D.
Publications and source records attributed to Wende, C. D..
Continuous observations of long-term variations in cosmic X-ray sources
Results are reported for the Charged Particle Measurements Experiment which was conducted on board IMP-7 to detect X-ray fluxes from the sun, the galactic center, Tau X-1, and Sco X-1 over a nine-month period. Autocorrelation analysis of the data indicates a probable 80-day periodicity in the flux from Sco X-1, a 110-day periodicity in the flux from the galactic center, no periodicities in the flux from Tau X-1, and a strong 27-day periodicity in the solar X-ray flux. A transient event detected within the cluster of sources constituting the galactic center is reported which lasted about two months and had a flux roughly equal to the regular flux from this area. It is noted that this was the only transient event detected in the whole area under continuous observation for the duration of the experiment.
OAO 2/Wisconsin Experiment Package (WEP) photometer users guide
The user's guide is intended to enable astronomers to reduce the filter photometry data obtained by the WEP carried on the OAO 2 spacecraft. Only information related to the stellar photometer contained within the experiment package is presented, since the nebular photometer failed after 2-1/2 months of operation, while the stellar photometers provided roughly 49 months worth of data.
The normalization of solar X-ray data from many experiments.
A conversion factor is used to convert Geiger (GM) tube count rates or ion chamber currents into units of the incident X-ray energy flux in a specified passband. A method is described which varies the passband to optimize these conversion factors such that they are relatively independent of the spectrum of the incident photons. This method was applied to GM tubes flown on Explorers 33 and 35 and Mariner 5 and to ion chambers flown on OSO 3 and OGO 4. Revised conversion factors and passbands are presented, and the resulting absolute solar X-ray fluxes based on these are shown to improve the agreement between the various experiments. Calculations have shown that, although the GM tubes on Explorer 33 viewed the Sun off-axis, the effective passband did not change appreciably, and the simple normalization of the count rates to the count rates of a similar GM tube on Explorer 35 was justified.
The normalization of solar X-ray data from many experiments
Conversion factor for converting Geiger tube count rates or ion chamber currents into units of incident X ray energy flux in specified passband in normalizing solar X ray data
X-ray emissions from the sun
Solar X ray emissions from quiet and active sun compared with radio flux to investigate production mechanisms
Correlation of solar microwave and soft X- ray radiation. II - The burst component
Solar microwave and soft X ray radiation emission correlation to determine flare peak temperature and solid angle
Correlation of solar microwave and soft X-ray radiation. I - The solar cycle and slowly varying components.
Solar cycle and slowly varying components correlation with soft X ray radiation based on spacecraft measurements
The correlation of solar microwave and soft X-ray radiation. Part 1 - The solar cycle and slowly varying components Progress report
Quiet sun and slowly varying components of solar X rays correlation of data collected by Explorer, Injun 1 and 2 satellites, and Mariner space probes
The correlation of solar microwave and soft X-ray radiation. Part 2 - The burst component Progress report
Solar flare observations with Mariner 5, and Explorer 33 and 35 satellites