Search Results - "Bahcivan, Hasan"

Plasma wave heating during extreme electric fields in the high-latitude E region by Bahcivan, Hasan

“…This article presents measurements of electron heating in the high‐latitude E region during rare, extreme convection electric fields (up to 160 mV/m). As…”
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Initial ionospheric observations made by the new Resolute incoherent scatter radar and comparison to solar wind IMF by Bahcivan, Hasan, Tsunoda, Roland, Nicolls, Michael, Heinselman, Craig

“…The first Resolute incoherent scatter radar observations of the polar ionospheric F region show the fine control of the ionospheric plasma density and flow…”
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Direct measurement of lower thermospheric neutral density using multifrequency incoherent scattering by Nicolls, Michael J., Bahcivan, Hasan, Häggström, Ingemar, Rietveld, Michael

“…Incoherent scatter (IS) is sensitive to collisional properties of the ion gas when the mean free path is close to the radar wave number. However, it has been…”
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Empirical model of Poynting flux derived from FAST data and a cusp signature by Cosgrove, Russell B., Bahcivan, Hasan, Chen, Steven, Strangeway, Robert J., Ortega, Juan, Alhassan, Mohamed, Xu, Yuchen, Welie, Megan Van, Rehberger, James, Musielak, Sebastian, Cahill, Nicole

“…Empirical models of the Poynting flux and particle kinetic energy flux, associated with auroral processes, have been constructed using data from the FAST…”
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Radar and rocket comparison of UHF radar scattering from auroral electrojet irregularities: Implications for a nanosatellite radar by Bahcivan, Hasan, Kelley, Michael C., Cutler, James W.

“…This article presents the estimates for UHF radar volume scattering coefficient of auroral electrojet irregularities based on previous measurements of absolute…”
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Violation of Hemispheric Symmetry in Integrated Poynting Flux via an Empirical Model by Cosgrove, Russell B., Bahcivan, Hasan, Chen, Steven, Sanchez, Ennio, Knipp, Delores

“…For southward interplanetary magnetic field (IMF) during local summer, the hemispherically integrated Poynting flux estimated by FAST‐satellite‐derived…”
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On the generation of large wave parallel electric fields responsible for electron heating in the high-latitude E region by Bahcivan, Hasan, Cosgrove, Russell

“…The sources of parallel electric fields (E∥) to explain E region electron heating measurements made by incoherent scatter radars have not been resolved. This…”
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Estimating the vector electric field using monostatic, multibeam incoherent scatter radar measurements by Nicolls, Michael J., Cosgrove, Russell, Bahcivan, Hasan

“…An algorithm has been developed to image the local structure in the convection electric field using multibeam incoherent scatter radar (ISR) data. The imaged…”
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Comparison of SuperDARN irregularity drift measurements and F-region ion velocities from the resolute bay ISR by Bahcivan, Hasan, Nicolls, Michael J., Perry, Gareth

“…A number of studies have addressed the principal assumption used by the SuperDARN network of HF radars that the scatter from F region field-aligned…”
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Comparison of ionospheric drift and magnetic deflections on the ground by Bahcivan, Hasan, Chen, Steven, Cosgrove, Russell

“…Resolute Bay, Canada, with an almost vertical geomagnetic field and the associated simplicity of ionospheric current system, is an optimal location to…”
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Space-Time Projection Optical Tomography: Search Space and Orbit Determination by Bahcivan, Hasan, Brady, David J

“…In a companion article, we discussed the radiometric sensitivity and resolution of a new passive optical sensing technique, Space-Time Projection Optical…”
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Clock synchronization on the RAX spacecraft by Springmann, John C., Kempke, Benjamin P., Cutler, James W., Bahcivan, Hasan

“…The Radio Aurora Explorer (RAX) is a CubeSat that was developed to study space weather in Earth׳s ionosphere. The scientific payload is a bistatic radar system…”
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Radiometric sensitivity and resolution of synthetic tracking imaging for orbital debris monitoring by Bahcivan, Hasan, Brady, David J, Hageman, Gordon C

“…We consider sampling and detection strategies for solar illuminated space debris. We argue that the lowest detectable debris cross section may be reduced by…”
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Radar and rocket comparison of UHF radar scattering from auroral electrojet irregularities: Implications for a nanosatellite radar by Bahcivan, Hasan, Kelley, Michael C, Cutler, James W

“…This article presents the estimates for UHF radar volume scattering coefficient of auroral electrojet irregularities based on previous measurements of absolute…”
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Auroral electrojet irregularities by Bahcivan, Hasan

“…This text presents an experimental and theoretical study of the auroral electrojet with concentration on the radio aurora. Joint observations by radars,…”
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Auroral electrojet irregularities by Bahcivan, Hasan

“…This text presents an experimental and theoretical study of the auroral electrojet with concentration on the radio aurora. Joint observations by radars,…”
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Achievements and Lessons Learned from Successful Small Satellite Missions for Space Weather-Oriented Research by Spence, Harlan E, Caspi, Amir, Bahcivan, Hasan, Nieves-Chinchilla, Jesus, Crowley, Geoff, Cutler, James, Fish, Chad, Jackson, David, Jørgensen, Therese Moretto, Klumpar, David, Li, Xinlin, Mason, James P, Paschalidis, Nick, Sample, John, Smith, Sonya, Swenson, Charles M, Woods, Thomas N

“…Space Weather, Vol. 20, Issue 7, e2021SW003031 (21pp); 2022 June 28 When the first CubeSats were launched nearly two decades ago, few people believed that the…”
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Phase diffusion and random walk interpretation of electromagnetic scattering by Bahcivan, Hasan, Hysell, David L, Kelley, Michael C

“…The relaxation behavior of phase observables for different particle diffusion models is found to establish a ground for radioscience interpretations of…”
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Cross-correlation analysis of epileptiform propagation using wavelets by Bahcivan, H., Ning Zhang, Mirski, M.A., Sherman, D.

“…We have analyzed cortical and subcortical field recordings from spatially distinct neural circuits in order to support the hypothesis that spatially distinct…”
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