Experimental investigation of short-term periodicities in the quiet-time X-ray flux at mid-latitudes

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dc.contributor.advisorSheldon, William R.
dc.contributor.committeeMemberKern, John W.
dc.contributor.committeeMemberJohnston, Tudor Wyatt
dc.creatorChang, Yuan-chyau
dc.date.accessioned2022-06-22T19:53:32Z
dc.date.available2022-06-22T19:53:32Z
dc.date.issued1971
dc.description.abstractBalloon observations of the X-ray flux of photons with energies greater than 20 keV, measured at an atmospheric depth of 8 g cm[raised -2] in the vicinity of Seattle, Washington, (L = 2.7) were analyzed. The randomness of time interval t required to receive each four counts was tested using a modified duration-distribution law. The technique of power spectral analysis was used to investigate periodicities in the flux. Statistically significant peaks were found in the spectral power density of this high altitude X-ray data, although neither pulsation nor microburst phenomena were present. Count rates based on different time intervals were used to investigate the periodic nature of the flux. The peaks were found in the X-ray power spectra at periods corresponding to the bounce periods of electrons in the energy range 20 to 400 keV. This observation indicates that the observed X-ray fluxes at L = 2.7 were influenced by trapped electrons in the magnetosphere on this L shell.
dc.description.departmentPhysics, Department of
dc.format.digitalOriginreformatted digital
dc.format.mimetypeapplication/pdf
dc.identifier.other13724348
dc.identifier.urihttps://hdl.handle.net/10657/9868
dc.language.isoen
dc.rightsThis item is protected by copyright but is made available here under a claim of fair use (17 U.S.C. Section 107) for non-profit research and educational purposes. Users of this work assume the responsibility for determining copyright status prior to reusing, publishing, or reproducing this item for purposes other than what is allowed by fair use or other copyright exemptions. Any reuse of this item in excess of fair use or other copyright exemptions requires express permission of the copyright holder.
dc.titleExperimental investigation of short-term periodicities in the quiet-time X-ray flux at mid-latitudes
dc.type.dcmiText
dc.type.genreThesis
thesis.degree.collegeCollege of Arts and Sciences
thesis.degree.departmentPhysics, Department of
thesis.degree.disciplinePhysics
thesis.degree.grantorUniversity of Houston
thesis.degree.levelMasters
thesis.degree.nameMaster of Science

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