Particle Acceleration At Shock Pair,
2013
University of Alabama in Huntsville
Particle Acceleration At Shock Pair, Lulu Zhao
Von Braun Symposium Student Posters
No abstract provided.
Two Suns In The Sky: Stellar Multiplicity Influence On Planet Formation,
2013
Yale University
Two Suns In The Sky: Stellar Multiplicity Influence On Planet Formation, Ji Wang, Debra Fischer
Yale Day of Data
We found that a planet is less likely to exist around a binary star, and thus Tatooine may be just a dream.
A Journey Into Quantization In Astrophysics,
2013
University of New Mexico
A Journey Into Quantization In Astrophysics, Florentin Smarandache, Victor Christianto
Branch Mathematics and Statistics Faculty and Staff Publications
The present book consists of 17 select scientific papers from ten years of work around 2003-2013. The topic covered here is quantization in Astrophysics. We also discuss other topics for instance Pioneer spacecraft anomaly. We discuss a number of sub-topics, for instance the use of Schrödinger equation to describe celestial quantization. Our basic proposition here is that the quantization of planetary systems corresponds to quantization of circulation as observed in superfluidity. And then we extend it further to the use of (complex) Ginzburg-Landau equation to describe possible nonlinearity of planetary quantization. Some of these papers have been published in journal …
Design And Evaluation Of A Fiber Optic Probe As A Means Of Subsurface Planetary Exploration,
2013
University of Arkansas, Fayetteville
Design And Evaluation Of A Fiber Optic Probe As A Means Of Subsurface Planetary Exploration, Robert Paul Pilgrim
Graduate Theses and Dissertations
The Optical Probe for Regolith Analysis (OPRA) is an instrumentation concept designed to provide spectroscopic analysis of the near subsurface of unconsolidated regolith on bodies such as moons, asteroids and planets. Below a chemically altered surface may lay the geological history in the form of stratigraphy that is shielded from degradation due to harsh external environments. Most of what we know about our solar system comes from remote platforms, such as satellites that are deployed into orbit around the target body. In the case of Mars, we have had several successful landers and rovers however, with the exception of the …
Distribution Of Plasmoids In Post-Coronal Mass Ejection Current Sheets,
2013
Dartmouth College
Distribution Of Plasmoids In Post-Coronal Mass Ejection Current Sheets, L.-J. Guo, A. Bhattacharjee, Y.-M. Huang
Dartmouth Scholarship
Recently, the fragmentation of a current sheet in the high-Lundquist-number regime caused by the plasmoid instability has been proposed as a possible mechanism for fast reconnection. In this work, we investigate this scenario by comparing the distribution of plasmoids obtained from Large Angle and Spectrometric Coronagraph (LASCO) observational data of a coronal mass ejection event with a resistive magnetohydrodynamic simulation of a similar event. The LASCO/C2 data are analyzed using visual inspection, whereas the numerical data are analyzed using both visual inspection and a more precise topological method. Contrasting the observational data with numerical data analyzed with both methods, we …
Discovering Exoplanets Through Hidden Markov Model Analysis,
2013
Rose-Hulman Institute of Technology
Discovering Exoplanets Through Hidden Markov Model Analysis, Jon Drobny
Rose-Hulman Undergraduate Research Publications
The goal for the project is to develop a Hidden Markov Model for the detection and characterization of extrasolar planets through the analysis of light curves.
Magnesium Isotopic Compositions Of The Moon And Achondrites: Implications For Their Origin And Evolution,
2013
University of Arkansas, Fayetteville
Magnesium Isotopic Compositions Of The Moon And Achondrites: Implications For Their Origin And Evolution, Fatemeh Sedaghatpour
Graduate Theses and Dissertations
The main objectives of this thesis are to estimate Mg isotopic compositions of the Moon and achondrites, to understand the behavior of Mg isotopes during magmatic differentiation processes in different planetary bodies, and to evaluate the extent of Mg isotopic heterogeneity in the solar system. In order to achieve these goals, Mg isotopes have been measured for 47 well-characterized lunar samples and 22 differentiated meteorites by MC-ICPMS. The limited Mg isotopic variations among mare and highland regolith, mare breccias, and highland impact-melt rocks reflect negligible Mg isotope fractionation during lunar surface processes (e.g. solar wind, cosmic rays, micrometeorite bombardments, meteorite …
On Chlorine Salts: Their Detection, Stability And Implications For Water On Mars And Europa,
2013
University of Arkansas, Fayetteville
On Chlorine Salts: Their Detection, Stability And Implications For Water On Mars And Europa, Jennifer Hanley
Graduate Theses and Dissertations
Chlorine salts (e.g. chlorides, chlorates and perchlorates) are an important factor in the stability of water on the surfaces of planetary bodies. Here we have shown that perchlorate and chlorate salts will lower the freezing point of water, allowing it to be liquid down to ~204 K. These salts will also slow down the evaporation rate, extending the lifetime of the liquid water solution. Chlorine salts have been detected on Mars, which has significant implications for the stability of water and hence its habitability. To study their effects on the stability of water on planetary surfaces, we need to first …
Kelvin-Helmholtz Instability Of The Cme Reconnection Outflow Layer In The Low Corona,
2013
University of Warwick
Kelvin-Helmholtz Instability Of The Cme Reconnection Outflow Layer In The Low Corona, Claire Foullon, Erwin Verwichte, Katariina Nykyri, Markus J. Aschwanden, Iain G. Hannah
Publications
New capabilities for studying the Sun allow us to image for the first time the magnetic Kelvin–Helmholtz (KH) instability developing at the surface of a fast coronal mass ejecta (CME) less than 150 Mm above the solar surface. We conduct a detailed observational investigation of this phenomenon, observed off the east solar limb on 2010 November 3, in the EUV with SDO/AIA. In conjunction with STEREO-B/EUVI, we derive the CME source surface position. We ascertain the timing and early evolution of the CME outflow leading to the instability onset. We perform image and spectral analysis, exploring the CME plasma structuring …
A Statistical Analysis Of Electromagnetic Ion Cyclotron (Emic) Waves And Their Correlation To The 11-Year Solar Cycle,
2013
University of New Hampshire - Main Campus
A Statistical Analysis Of Electromagnetic Ion Cyclotron (Emic) Waves And Their Correlation To The 11-Year Solar Cycle, Erik A. Lindgren
Honors Theses and Capstones
This thesis presents a statistical analysis of EMIC waves measured at Halley Research Station from 2008 through 2012. An introduction covering the origin of and theory behind EMIC waves is provided, along with a background covering previous statistical research regarding EMIC waves. Guidelines regarding EMIC wave definition and analysis are described along with examples of how they were used. The data shows an increase in the total number of EMIC waves as well as the number and percentage of EMIC waves with maximum frequency above 1 Hz during the 5-year period. The results suggest that the total number of EMIC …
Determination Of Average Loss Lifetimes For Near‐Earth Electrons In Solar Storms,
2013
Washington University in St Louis
Determination Of Average Loss Lifetimes For Near‐Earth Electrons In Solar Storms, John Blears
Undergraduate Theses—Unrestricted
The rate of electron wave‐particle scattering in the near‐Earth magnetosphere is investigated using multiple simulations of solar storms from solar cycle 23 (1996‐2005). Simulations are created using the Hot Electron and Ion Drift Integrator (HEIDI) model, which analyzes the drifts of keV‐energy electrons through the inner magnetosphere and identifies the precipitation of these particles into the upper atmosphere. The loss lifetime formulation used by HEIDI, which represents the rate at which the keV‐energy of the electrons is extinguished, predicts unreasonably large loss lifetimes deep in the inner magnetosphere. This discrepancy between the values used by the HEIDI model and those …
Mars Up Close: Scott Murchie's Team Of Scientists Helps Uncover The Secrets Of The Red Planet,
2013
Colby College
Mars Up Close: Scott Murchie's Team Of Scientists Helps Uncover The Secrets Of The Red Planet, Tom Nugent
Colby Magazine
Planetary geologist Scott Murchie ’81 leads a team that built and operates the high-tech camera now orbiting Mars and analyzes images used to help select landing sites for the Phoenix lander and the Mars Science Laboratory, scheduled for launch in 2009. Murchie’s work is groundbreaking—literally.
Unsolved Problems In Special And General Relativity,
2013
University of New Mexico
Unsolved Problems In Special And General Relativity, Florentin Smarandache, Fu Yuhua, Zhao Fengjuan
Branch Mathematics and Statistics Faculty and Staff Publications
This book includes 21 papers written by 23 authors and co-authors. All papers included herein are produced by scholars from People’s Republic of China, except two papers written by Prof. L. Sapogin, V. A. Dzhanibekov, Yu. A. Ryabov from Russia, and by Prof. Florentin Smarandache from USA. The editors hope that all these papers will contribute to the advance of scholarly research on several aspects of Special and General Relativity. This book is suitable for students and scholars interested in studies on physics. The first paper is written by Hua Di. He writes that Einstein’s general theory of relativity cannot …
Ensemble Forecasting Of Coronal Mass Ejections Using The Wsa-Enlil With Coned Model,
2013
Air Force Institute of Technology
Ensemble Forecasting Of Coronal Mass Ejections Using The Wsa-Enlil With Coned Model, D. Emmons, Ariel O. Acebal, A. Pulkkinen, A. Taktakishvili, Peter Macneice, D. Odstrcil
Faculty Publications
The combination of the Wang‐Sheeley‐Arge (WSA) coronal model, ENLIL heliospherical model version 2.7, and CONED Model version 1.3 (WSA‐ENLIL with CONED Model) was employed to form ensemble forecasts for 15 halo coronal mass ejections (halo CMEs). The input parameter distributions were formed from 100 sets of CME cone parameters derived from the CONED Model. The CONED Model used image processing along with the bootstrap approach to automatically calculate cone parameter distributions from SOHO/LASCO imagery based on techniques described by Pulkkinen et al. (2010). The input parameter distributions were used as input to WSA‐ENLIL to calculate the temporal evolution of the …
Book Review: Weird Worlds: Bizarre Bodies Of The Solar System And Beyond,
2013
Embry-Riddle Aeronautical University
Book Review: Weird Worlds: Bizarre Bodies Of The Solar System And Beyond, T. D. Oswalt
Publications
This document is Dr. Oswalt’s review of Weird Worlds : Bizarre Bodies of the Solar System and Beyond by David A. J. Seargent. Springer, 2013 309p, 1461470633 $34.95, 9781461470632 $34.95.
Exploring The Surface Liquid And Lake Regions Of Titan With Laboratory Experimentation And Cassini Spacecraft Data,
2012
University of Arkansas, Fayetteville
Exploring The Surface Liquid And Lake Regions Of Titan With Laboratory Experimentation And Cassini Spacecraft Data, Felix Casimir Wasiak
Graduate Theses and Dissertations
The surface liquids and lake regions of Titan are studied utilizing three unique techniques, the results of which are reported in this dissertation. The development of a facility to simulate the surface conditions of Titan, and to conduct experiments on samples within that facility, brings an understanding of Titan's surface not possible through observation and modeling alone. The properties of this facility are presented, including conceptual methodology, design, implementation, performance, and experimental results. The facility, the main component of which is a simulation chamber, allows for Titan temperatures of 90 - 94 K and a 1.5 bar N2 atmosphere. The …
Penetration Forces For Subsurface Regolith Probes,
2012
University of Arkansas, Fayetteville
Penetration Forces For Subsurface Regolith Probes, Ahmed Elshafie
Graduate Theses and Dissertations
Investigating planetary bodies using penetrometers can provide detailed information about its history and evolution. An estimation of subsurface density and porosity can be made from the shape of the penetration curve. Using penetrometers mounted on planetary platforms could be challenging due to the uncertainty of the subsurface composition and since the maximum allowed force for penetration is the weight of the lander or rover on the surface. Estimation of penetration forces can provide a reliable constraint on the maximum reachable depth without endangering the whole mission. Therefore, knowledge of the required penetration force to specific depths can be helpful in …
Abrupt Longitudinal Magnetic Field Changes And Ultraviolet Emissions Accompanying Solar Flares,
2012
West Chester University of Pennsylvania
Abrupt Longitudinal Magnetic Field Changes And Ultraviolet Emissions Accompanying Solar Flares, B. M. Johnstone, G. J.D. Petrie, Jeffrey J. Sudol
Physics & Engineering Faculty Publications
No abstract provided.
Trajectories And Distribution Of Interstellar Dust Grains In The Heliosphere,
2012
Harvard-Smithsonian Center for Astrophysics
Trajectories And Distribution Of Interstellar Dust Grains In The Heliosphere, Jonathan D. Slavin, Priscilla C. Frisch, Hans-Reinhard Müller, Jacob Heerikhuisen
Dartmouth Scholarship
The solar wind carves a bubble in the surrounding interstellar medium (ISM) known as the heliosphere. Charged interstellar dust grains (ISDG) encountering the heliosphere may be diverted around the heliopause or penetrate it depending on their charge-to-mass ratio. We present new calculations of trajectories of ISDG in the heliosphere, and the dust density distributions that result. We include up-to-date grain charging calculations using a realistic UV radiation field and full three-dimensional magnetohydrodynamic fluid + kinetic models for the heliosphere. Models with two different (constant) polarities for the solar wind magnetic field (SWMF) are used, with the grain trajectory calculations done …
Development And Test Of A Vlf-Receiver For Monitoring Solar Flares,
2012
University of Alabama in Huntsville
Development And Test Of A Vlf-Receiver For Monitoring Solar Flares, Liz Klar, Chris Phillips, Akito D. Kawamura, Eric Zirnstein
Von Braun Symposium Student Posters
No abstract provided.
