Book Review: Shoot The Moon: A Complete Guide To Lunar Imaging, 2017 Embry-Riddle Aeronautical University - Daytona Beach
Book Review: Shoot The Moon: A Complete Guide To Lunar Imaging, T. D. Oswalt
This document is Dr. Oswalt’s review of Shoot the Moon: a Complete Guide to Lunar Imaging by Dupont-Bloch, Nicolas. Cambridge, 2016, 323 p index, 9781107548442 $39.95, 9781316657867 $32.00.
Book Review: From The Realm Of The Nebulae To Populations Of Galaxies: Dialogues On A Century Of Research, Astrophysics And Space Science Library, 435, 2017 Embry-Riddle Aeronautical University - Daytona Beach
Book Review: From The Realm Of The Nebulae To Populations Of Galaxies: Dialogues On A Century Of Research, Astrophysics And Space Science Library, 435, T. D. Oswalt
This document is Dr. Oswalt’s review of From the Realm of the Nebulae to Populations of Galaxies : Dialogues on a Century of Research, Astrophysics and Space Science Library, 435. by Mauro D'Onofrio, Roberto Rampazzo, and Simone Zaggia Springer, 2016 785p bibl index afp, 9783319310046 $279.00, 9783319310060 $219.00
Book Review: The International Atlas Of Mars Exploration: From Spirit To Curiosity: V.2: 2004 To 2014, 2016 Embry-Riddle Aeronautical University - Daytona Beach
Book Review: The International Atlas Of Mars Exploration: From Spirit To Curiosity: V.2: 2004 To 2014, T. D. Oswalt
This document is Dr. Oswalt’s review of The International Atlas of Mars Exploration: from Spirit to Curiosity : V.2: 2004 to 2014 by Philip J. Stooke. 444p bibl index, 9781107030930 $145.00, 9781139344470 LC Call Number: 1000
Formation And Past Evolution Of The Meteoroid Complex Of Comet 96p/Machholz, 2016 The Univerisity of Western Ontario
Formation And Past Evolution Of The Meteoroid Complex Of Comet 96p/Machholz, Abedin Yusein Abedin
Electronic Thesis and Dissertation Repository
The past dynamical evolution of the meteoroid streams associated with comet 96P/Machholz is investigated. The goal is to obtain a coherent picture of the past capture of this large comet into a short period orbit, and its subsequent breakup hierarchy. In particular, the aim is to constrain the earliest epoch that this large first precursor started to supply meteoroids into the interplanetary space. The fragments and meteoroid streams of that past cometary decay constitute a wide multiplex of interplanetary bodies, knows as the 96P/Machholz complex. The largest presently surviving fragment is comet 96P/Machholz, followed by a large ...
Experimental Simulations Of Recurring Slope Lineae And Other Flow Formation Features On Mars, 2016 University of Arkansas, Fayetteville
Experimental Simulations Of Recurring Slope Lineae And Other Flow Formation Features On Mars, Julia Ann Heydenreich
Theses and Dissertations
Various flow formation features from gullies to recurring slope lineae (RSL) have been identified across the martian surface. The formation of these geologic features are still being determined. Recently, several aspects of these flow features indicate that salt water flows in the subsurface during the warmer months when the ice melts. This paper explores the formation of these processes using laboratory experimental simulations. Experiments were conducted in a wooden flume under varying martian conditions of temperature, slope angle, regolith simulant and a liquid subsurface flow. By adjusting the flume at specific heights, several slopes were obtained to mimic the slopes ...
Variability Of Mars' Seasonal North Polar Cap, 2016 Gordon State College
Variability Of Mars' Seasonal North Polar Cap, Richard W. Schmude Jr.
Georgia Journal of Science
Mars’ seasonal north polar cap (hereafter sNPC) underwent year-to-year changes between 2008 and 2015 or Mars years 29–33. The writer monitored changes in the sNPC using images made with the MARCI camera onboard the Mars Reconnaissance Orbiter (MRO). Nine isolated bright spots corresponding to Korolev, Lomonosov, and Louth Craters, the albedo features Ierne, Olympia (or Lemuria), and Cecropia, and three unnamed features were examined. The following was concluded: 1) the sNPC underwent small year-to-year changes between 2008 and 2015 [MY = 29–33], 2) there are no years where all temporary frost features lasted longer than their mean lifespan, and ...
Aging Comets And Their Meteor Showers, 2016 The University of Western Ontario
Aging Comets And Their Meteor Showers, Quanzhi Ye
Electronic Thesis and Dissertation Repository
Comets are thought to be responsible for the terrestrial accretion of water and organic materials. Comets evolve very quickly, and will generally deplete their volatiles in a few hundred revolutions. This process, or the aging of comets, is one of the most critical yet poorly understood problems in planetary astronomy. The goal of this thesis is to better understand this problem by examining different parts of the cometary aging spectrum of Jupiter-family comets (JFCs), a group of comets that dominates the cometary influx in the near-Earth space, using both telescopic and meteor observations. We examine two representative JFCs and the ...
Back Half Of The Year, 2016 Gettysburg College
Back Half Of The Year, Ian R. Clarke
Physics and Astronomy Faculty Publications
Here we are in the back half of 2016, and the days are getting shorter. We have, as of today, lost 18 minutes since the solstice on June 20, and the speed of that change is quickening. You may wonder why it is that we have our hottest weather after our longest day is behind us. The simple answer is that it takes time for land and water masses to warm up. That’s the reason that Sept. 21 is likely to be a lot warmer than March 21, even though they have the same amount of daylight. [excerpt]
Living In The Milky Way, 2016 Gettysburg College
Living In The Milky Way, Ian R. Clarke
Physics and Astronomy Faculty Publications
It’s finally here. Today, June 20 at 6:34 p.m., is the the summer solstice, also known as the first day of summer and, confusingly enough, midsummer’s eve. From a scientific perspective, it marks the moment the sun reaches its northernmost point in our sky. As a result of that position, it’s the shortest night and longest day if you live north of the equator. [excerpt]
Investigating Mineral Stability Under Venus Conditions: A Focus On The Venus Radar Anomalies, 2016 University of Arkansas, Fayetteville
Investigating Mineral Stability Under Venus Conditions: A Focus On The Venus Radar Anomalies, Erika Kohler
Theses and Dissertations
Radar studies of the surface of Venus have identified regions with high radar reflectivity concentrated in the Venusian highlands: between 2.5 and 4.75 km above a planetary radius of 6051 km, though it varies with latitude. Previous research has proposed several theories on the source of these anomalies, including increased surface roughness, metallic materials with higher dielectric constants, or ferroelectric materials. Prior work suggests several processes that could be the origin of these anomalies, such as surface-atmospheric interactions or low lying clouds or fog. Alternatively, these anomalies could result from a semi-metallic compound trapped at the cooler conditions ...
A Constitutional Political Economy Perspective On The Colonization Of Mars, 2016 University of Pennsylvania
A Constitutional Political Economy Perspective On The Colonization Of Mars, Shashank Sirivolu
Honors Theses (PPE)
NASA has released an account of the agency's plans for a mission to Mars. Private organizations, like SpaceX, too have expressed a goal to visit or, in some cases, even establish settlements on Mars. Yet the prospect of establishing settlements, that is, colonizing - as opposed to simply exploring - raises a number of issues. The focus of this study is on the emergence of institutions and organizations on an extraterrestrial planet like Mars. Specifically, the thesis will explore the conscious design of organizations and institutions of collective action, from the Constitutional Political Economy perspective.
Book Review: Moons Of The Solar System: From Giant Ganymede To Dainty Dactyl, 2016 Embry-Riddle Aeronautical University - Daytona Beach
Book Review: Moons Of The Solar System: From Giant Ganymede To Dainty Dactyl, T. D. Oswalt
This document is Dr. Oswalt’s review of Moons of the Solar System : from Giant Ganymede to Dainty Dactyl by James A. Hall, III. Springer 2015. 297p index afp, 9783319206356 $34.99, 9783319206363 $19.99
Exploring The Early Solar System With Cometary Gases: Observations Of Spontaneous Activity Around Comet 67p/Churyumov-Gerasimenko Post-Perihelion With The R-Alice Ultraviolet Spectrograph, 2016 University of Colorado, Boulder
Exploring The Early Solar System With Cometary Gases: Observations Of Spontaneous Activity Around Comet 67p/Churyumov-Gerasimenko Post-Perihelion With The R-Alice Ultraviolet Spectrograph, John W. Noonan
Undergraduate Honors Theses
The Rosetta Alice (R-Alice) ultraviolet spectrograph on the European Space Agency Rosetta spacecraft, currently escorting the comet 67P/Churyumov-Gerasimenko in its orbit around the Sun, has observed the activity of the comet since encounter in August 2014. Fortuitous observations taken in October and November 2015, two and three months after perihelion respectively, show large increases in the Lyman-Beta, OI 1304, CII 1335, OI] 1356, and CI 1657 atomic emission lines that indicate gas outbursts. Due to the electron impact on gases in the cometary coma the data is compared to measured cross sections and line ratios to put constraints on ...
Pre-Mission Input Requirements To Enable Successful Sample Collection By A Remote Field/Eva Team, 2015 NASA Marshall Space Flight Center
Pre-Mission Input Requirements To Enable Successful Sample Collection By A Remote Field/Eva Team, Barbara A. Cohen, Darlene S. S. Lim, Kelsey E. Young, Anna Brunner, Richard C. Elphic, Audrey Horne, Mary C. Kerrigan, Gordon O. Osinski, John R. Skok, Steven W. Squyres, David Saint-Jacques, Jennifer L. Heldmann
Journal of Human Performance in Extreme Environments
We used a field excursion to the West Clearwater Lake Impact structure as an opportunity to test factors that contribute to the decisions a remote field team (for example, astronauts conducting extravehicular activities (EVA) on planetary surfaces) makes while collecting samples for return to Earth. We found that detailed background on the analytical purpose of the samples, provided to the field team, enables them to identify and collect samples that meet specific analytical objectives. However, such samples are not always identifiable during field reconnaissance activities, and may only be recognized after outcrop characterization and interpretation by crew and/or science ...
Solar Modulation Of The Cosmic Ray Intensity And The Measurement Of The Cerenkov Reemission In Nova’S Liquid Scintillator, 2015 University of Tennessee - Knoxville
Solar Modulation Of The Cosmic Ray Intensity And The Measurement Of The Cerenkov Reemission In Nova’S Liquid Scintillator, Philip James Mason
The NOνA (NuMI Off-axis electron neutrino Appearance) experiment is a long baseline neutrino oscillation experiment at Fermi National Accelerator Laboratory. Its purpose is to observe the oscillation of νμ (muon neutrino) to νe (electron neutrino) and to investigate the neutrino mass hierarchy and CP violation in the neutrino sector. Two detectors have been built for this purpose, a Near Detector 300 feet underground at Fermilab, and a Far Detector, on the surface at Ash River, Minnesota.
The completion of NOνA’s Far Detector in October 2014 enabled not only the recent measurement of neutrino oscillations, but an array ...
New Benzene Absorption Cross Sections In The Vuv, Relevance For Titan’S, 2015 Paul Scherrer Institute (PSI)
New Benzene Absorption Cross Sections In The Vuv, Relevance For Titan’S, Fernando J. Capalbo, Yves Bénilan, Nicolas Fray, Martin Schwell, Norbert Champion, Et-Touhami Es-Sebbar, Tommi T. Koskinen, Ivan Lehocki, Roger V. Yelle
Dr. Et-touhami Es-sebbar
Benzene is an important molecule in Titan’s atmosphere because it is a potential link between the gas phase and the organic solid phase. We measured photoabsorption in the ultraviolet by benzene gas at temperatures covering the range from room temperature to 215 K. We derived benzene absorption cross sections and analyzed them in terms of the transitions observed. No significant variation with measurement temperature was observed. We discuss the implications of our measurements for the derivation of benzene abundance profiles in Titan’s thermosphere, by the Cassini/Ultraviolet Imaging Spectrograph (UVIS). The use of absorption cross sections at low ...
Variations In Solar Wind Fractionation As Seen By Ace/Swics And The Implications For Genesis Mission Results, 2015 Los Alamos National Laboratory
Variations In Solar Wind Fractionation As Seen By Ace/Swics And The Implications For Genesis Mission Results, P. Pilleri, Daniel B. Reisenfeld, T. H. Zurbuchen, S. T. Lepri, P. Shearer, J. A. Gilbert, R. Von Steiger, R. C. Wiens
Physics and Astronomy Faculty Publications
We use Advanced Composition Explorer (ACE)/Solar Wind Ion Composition Spectrometer (SWICS) elemental composition data to compare the variations in solar wind (SW) fractionation as measured by SWICS during the last solar maximum (1999-2001), the solar minimum (2006-2009), and the period in which the Genesis spacecraft was collecting SW (late 2001-early 2004). We differentiate our analysis in terms in SW regimes (i.e., originating from interstream or coronal hole flows, or coronal mass ejecta). Abundances are normalized to the low-first ionization potential (low-FIP) ion magnesium to uncover correlations that are not apparent when normalizing to high-FIP ions. We find that ...
Low Intensity Gamma-Ray Spectroscopy Of The Lake Labyrinth Meteorite, 2015 California Polytechnic State University - San Luis Obispo
Low Intensity Gamma-Ray Spectroscopy Of The Lake Labyrinth Meteorite, Tristan C. Paul
A 23.7g fragment of the Lake Labyrinth Meteorite (fell in 1924, collected in 1934 at Lake Labyrinth in South Australia, Australia) was re-investigated for evidence of the presence of 98Tc using a two dimensional low-intensity gamma-ray spectrometer. A new calibration technique using 26Al sources found the gamma-rays previously thought to be due to 98Tc are more likely from 166Ho. The presence of 166Ho is most likely due to activation of the stable 165Ho in the meteorite from terrestrial background sources where it was stored.
Resolving Emission Lines Of Sodiumlike Fe Xvi Using Ebit, 2015 California Polytechnic State University, San Luis Obispo
Resolving Emission Lines Of Sodiumlike Fe Xvi Using Ebit, Sandi Lavito
STAR (STEM Teacher and Researcher) Presentations
High resolution crystal spectrometers on sounding rockets and orbiting satellites, such as the Solar Maximum Mission, show strong X-ray emission from the n= 3 to 2 transitions in neon-like Fe XVII. Two of the strongest lines are the 3d to 2p resonance and inter combination lines at 15.01 Å (3C) and 15.26 Å (3D).
Intensity ratios of these solar lines range from ~ 1.6 to 2.8. The lower ratios are a result of a line from Na-like Fe XVI inner shell satellite line blending with the Fe XVII inter combination line, 3D. The wavelength of the Na-like ...
Photometric Trends In The Visible Solar Continuum And Their Sensitivity To The Center-To-Limb Profile, 2015 University of Colorado, Boulder
Photometric Trends In The Visible Solar Continuum And Their Sensitivity To The Center-To-Limb Profile, C. L. Peck, M.P. Rast
Astrophysical & Planetary Sciences Faculty Contributions
Solar irradiance variations over solar rotational timescales are largely determined by the passage of magnetic structures across the visible solar disk. Variations on solar cycle timescales are thought to be similarly due to changes in surface magnetism with activity. Understanding the contribution of magnetic structures to total solar irradiance and solar spectral irradiance requires assessing their contributions as a function of disk position. Since only relative photometry is possible from the ground, the contrasts of image pixels are measured with respect to a center-to-limb intensity profile. Using nine years of full-disk red and blue continuum images from the Precision Solar ...