A5000818727- Ionosphere and magnetosphere dynamics
- Solar and Space Plasma Dynamics
- Earthquake Detection and Analysis
- Astro and Planetary Science
- Geophysical and Geoelectrical Methods
- Gamma-ray bursts and supernovae
- Seismic Waves and Analysis
- Health and Conflict Studies
- Pediatric Hepatobiliary Diseases and Treatments
- Computational Physics and Python Applications
- Gallbladder and Bile Duct Disorders
- Ultrasonics and Acoustic Wave Propagation
- Stellar, planetary, and galactic studies
- Scientific Research and Discoveries
- Planetary Science and Exploration
- Liver Disease and Transplantation
- Galaxies: Formation, Evolution, Phenomena
- Astrophysics and Cosmic Phenomena
- Atmospheric Ozone and Climate
- Magnetic confinement fusion research
- Wave and Wind Energy Systems
- Geomagnetism and Paleomagnetism Studies
- Underwater Acoustics Research
Olympic College
1998-2019
University of Michigan–Ann Arbor
2012
University of California, Los Angeles
1994-1997
University of Oxford
1972
(Abridged) We describe here the most ambitious survey currently planned in optical, Large Synoptic Survey Telescope (LSST). A vast array of science will be enabled by a single wide-deep-fast sky survey, and LSST have unique capability faint time domain. The design is driven four main themes: probing dark energy matter, taking an inventory Solar System, exploring transient optical sky, mapping Milky Way. wide-field ground-based system sited at Cerro Pach\'{o}n northern Chile. telescope 8.4 m...
Pitch angle diffusion rates due to Coulomb collisions and resonant interactions with plasmaspheric hiss, lightning‐induced whistlers anthropogenic VLF transmissions are computed for inner magnetospheric electrons. The bounce‐averaged, quasi‐linear pitch coefficients input into a pure equation obtain L energy dependent equilibrium distribution functions precipitation lifetimes. relative effects of each scattering mechanism considered as function electron shell. Model calculations accurately...
The sensitivity of the rate energetic electron pitch angle scattering and precipitation loss in Earth's magnetosphere due to Coulomb interactions with thermal plasma resonant wave‐particle plasmaspheric hiss, lightning‐generated whistlers VLF transmitter signals is computed for a realistic range wave parameters. rates are most sensitive choice mean frequency average propagation; bandwidth angular spread propagation direction relatively unimportant. Variations density can also strongly...
ABSTRACT Objective: Biliary atresia (BA) frequently results in portal hypertension (PHT), complications of which lead to significant morbidity and mortality. The Childhood Liver Disease Research Education Network was used perform a cross‐sectional multicentered analysis PHT children with BA. Methods: Subjects BA receiving medical management at site were enrolled. A priori, clinically evident defined as “definite” when there either history complication or clinical findings consistent (both...
Abstract As demonstrated with the Sloan Digital Sky Survey (SDSS), Pan-STARRS, and most recently Gaia data, broadband near-UV to near-IR stellar photometry can be used estimate distance, metallicity, interstellar dust extinction along line of sight for stars in Galaxy. Anticipating photometric catalogs tens billions from Rubin's Legacy Space Time (LSST), we present a Bayesian model pipeline that build on previous work handle LSST-sized datasets. Likelihood computations utilize MIST/Dartmouth...
Magnetic electron spectrometer data from six satellites (OV3‐3, OV1‐14, OGO 5, S3‐2, S3‐3, and CRRES) have been used to study long‐term (1966‐1991) behavior of trapped energetic electrons in the inner radiation belt. Comparison observed energy spectra at L ≥ 1.35 for different phases solar cycle reveals a clear trend toward enhanced fluxes during periods maximum energies below few hundred keV; we suggest that this is caused by an increase rate inward radial diffusion source higher . In...
A numerical simulation of electron pitch angle scattering in an asymmetric magnetic field environment has been applied to the Earth's inner radiation belt obtain a global pattern energetic precipitation. Under conditions weak scattering, which characterize region L ≤ 2, flux electrons precipitated into atmosphere is strongly localized longitudinal range (±15°) centered near South Atlantic anomaly (SAA), where surface intensity weakest and bounce loss cones are exceptionally large. For...
Energetic electron precipitation flux from the Earth's inner radiation belt (L≤2) is usually below detection threshold of current satellite instrumentation. Theoretical estimates longitudinally and interhemispherically averaged rate have been obtained by evaluating equilibrium pitch angle distribution in loss cone due to scattering. The results are normalized CRRES MEA measurements trapped flux. An energy deposition code employed evaluate ion production rates middle atmosphere. We...
Two partially compensating errors occurred in our recent calculation label et al., 1997] of the average rate energetic electron precipitation from Earth's inner radiation zone.The omnidirectional flux