Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- University of Massachusetts Amherst (746)
- University of Texas Rio Grande Valley (665)
- University of Kentucky (577)
- Selected Works (514)
- Dartmouth College (422)
-
- Embry-Riddle Aeronautical University (417)
- Tennessee State University (402)
- Brigham Young University (333)
- San Jose State University (313)
- Florida Institute of Technology (289)
- University of New Mexico (247)
- University of Nevada, Las Vegas (208)
- University of New Hampshire (208)
- University of Louisville (207)
- Swarthmore College (204)
- University of Alabama in Huntsville (173)
- Clemson University (167)
- Andrews University (148)
- Old Dominion University (130)
- Western University (124)
- Smith College (121)
- University of South Carolina (96)
- Munster Technological University (92)
- Utah State University (92)
- California Polytechnic State University, San Luis Obispo (90)
- Chapman University (87)
- University of Arkansas, Fayetteville (86)
- SelectedWorks (82)
- Louisiana State University (77)
- Wayne State University (76)
- Keyword
-
- Astrophysics (279)
- Galaxies: evolution (270)
- Galaxies (257)
- Astronomy (222)
- Stars (186)
-
- Planetary systems (148)
- Accretion (138)
- White dwarfs (132)
- Galaxies: structure (131)
- Refereed Publications (130)
- Gravitational waves (124)
- Galaxies: formation (122)
- Cosmology (119)
- Galaxies: spiral (112)
- Galaxies: high-redshift (110)
- Physics (110)
- Surveys (106)
- X-rays (97)
- Galaxies: ISM (94)
- Quasars (89)
- 1.3 PHYSICAL SCIENCES (87)
- Extinction (78)
- Galaxies: fundamental parameters (78)
- Binaries (77)
- Cosmology and astronomy (77)
- Dust (76)
- Stellar activity (75)
- Galaxy evolution (74)
- Spectroscopic binaries (74)
- Circumstellar matter (72)
- Publication Year
- Publication
-
- Physics and Astronomy Faculty Publications and Presentations (652)
- Faculty Publications (623)
- Physics and Astronomy Faculty Publications (614)
- Publications (504)
- Astronomy Department Faculty Publication Series (476)
-
- Dartmouth Scholarship (418)
- Information Systems and Engineering Management Research Publications (400)
- Aerospace, Physics, and Space Science Faculty Publications (266)
- Theses and Dissertations (207)
- Physics & Astronomy Faculty Works (204)
- Faculty Scholarship (198)
- Physics & Astronomy ETDs (192)
- Space Science Center (159)
- Physics Faculty Publications (142)
- Physics & Astronomy Faculty Research (140)
- Astronomy: Faculty Publications (119)
- Space Journal (102)
- Benne Holwerda (101)
- Richard Ignace (87)
- Mauro Giavalisco (82)
- Physical Sciences Publications (82)
- Ted von Hippel (79)
- Mathematics, Physics, and Computer Science Faculty Articles and Research (76)
- Macalester Journal of Physics and Astronomy (69)
- Aaron J. Romanowsky (67)
- Honors Theses (67)
- Physics and Astronomy Faculty Research Publications (67)
- Physics & Astronomy (64)
- ETSU Faculty Works (62)
- Faculty and Student Publications (62)
Articles 1 - 30 of 9353
Full-Text Articles in Physical Sciences and Mathematics
Unraveling The Physics Of Quasar Jets Using Hst Polarimetry, Devon Clautice
Unraveling The Physics Of Quasar Jets Using Hst Polarimetry, Devon Clautice
Theses and Dissertations
We present a multiwavelength study of three high-power FR II (quasar) jets -- 3C 273, PKS 0637-752, and 1150+497 -- with an emphasis on new high-quality Hubble Space Telescope (HST) optical polarimetry and Chandra X-ray Observatory imaging. Relativistic jets from active galactic nuclei transport energy and mass from the supermassive black hole’s accretion region out to Megaparsec-scale lobes, with effects that feedback into galaxy formation and cluster energetics. We build on recent work which has called into question our fundamental understanding of FR II jet physics, and suggest that highly-efficient particle acceleration must be taking place in situ …
Moid Using New Sets Of Universal Functions, Ayman Homda, Hany R. Dwidar, Abdelaziz A. Bakry, M.N. Mohamad Ismail, Ahmed El-Raffie
Moid Using New Sets Of Universal Functions, Ayman Homda, Hany R. Dwidar, Abdelaziz A. Bakry, M.N. Mohamad Ismail, Ahmed El-Raffie
Al-Azhar Bulletin of Science
In this paper, based on Goodyear's time transformation formula, we used a set of modified universal functions to construct the minimum distance function between any two celestial objects. We determined the distance between objects in space under a specific time constraint. We used the continued fractions method for quick convergence of the distance function. We used the inverse series to obtain a first initial guess to solve the convergence equation. Furthermore, the Lagrange multiplier method was used to determine the minimum distance between the two objects under the specified time constraint. We constructed an algorithm and applied it with the …
Automated Identification And Mapping Of Interesting Mineral Spectra In Crism Images, Arun M. Saranathan
Automated Identification And Mapping Of Interesting Mineral Spectra In Crism Images, Arun M. Saranathan
Doctoral Dissertations
The Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) has proven to be an invaluable tool for the mineralogical analysis of the Martian surface. It has been crucial in identifying and mapping the spatial extents of various minerals. Primarily, the identification and mapping of these mineral spectral-shapes have been performed manually. Given the size of the CRISM image dataset, manual analysis of the full dataset would be arduous/infeasible. This dissertation attempts to address this issue by describing an (machine learning based) automated processing pipeline for CRISM data that can be used to identify and map the unique mineral signatures present in …
Toltec: A New Multichroic Imaging Polarimeter For The Large Millimeter Telescope, Nat S. Denigris
Toltec: A New Multichroic Imaging Polarimeter For The Large Millimeter Telescope, Nat S. Denigris
Doctoral Dissertations
The TolTEC camera is a new millimeter-wave imaging polarimeter designed to fill the focal plane of the 50-m diameter Large Millimeter Telescope (LMT). Combined with the LMT, TolTEC offers high angular resolution (5", 6.3", 9.5") for simultaneous, polarization-sensitive observations in its three wavelength bands: 1.1, 1.4, and 2.0 mm. Additionally, TolTEC is designed to reach groundbreaking mapping speeds in excess of 1 deg2/mJy2/hr, which will enable the completion of deep surveys of large-scale structure, galaxy evolution, and star formation that are currently limited when considering practical observation times for other ground-based observatories. This thesis covers the …
Neutrino’S Non-Zero Electric Potential As An Origin Of Gravitation, Domain Structure And Expansion Of The Universe., Polievkt Perov
Neutrino’S Non-Zero Electric Potential As An Origin Of Gravitation, Domain Structure And Expansion Of The Universe., Polievkt Perov
College of Arts & Sciences Faculty Works
The axial electric potentials of neutrinos as neutral composite structures, while being very small at large distances, do not vanish, and the same can be said about the neutrino “asymmetric dipoles” (paired neutrinos of not the same kind). Depending on the orientation of the “asymmetric dipole”, its far-field electric potential in some direction can be positive or negative, interacting with other “dipoles” at that large distance attractively or repulsively depending on their mutual orientation. The mutual orientation of the dipoles locally (inside a galaxy) might be such that they are aligned and experience the attractive force toward the local center …
On Skew-Symmetric Splitting And Entropy Conservation Schemes For The Euler Equations, Björn Sjögreen, H.C. Yee
On Skew-Symmetric Splitting And Entropy Conservation Schemes For The Euler Equations, Björn Sjögreen, H.C. Yee
United States National Aeronautics and Space Administration: Publications
The Tadmor type of entropy conservation formulation for the Euler equations and various skew-symmetric splittings of the inviscid flux derivatives are discussed. Numerical stability of high order central and Padé type (centered compact) spatial discretization is enhanced through the application of these formulations. Numerical test on a 2-D vortex convection problem indicates that the stability and accuracy of these formulations using the same high order central spatial discretization are similar for vortex travel up to a few periods. For two to three times longer time integrations, their corresponding stability and accuracy behaviors are very different. The goal of this work …
Strongly Magnetized Accretion In Two Ultracompact Binary Systems, Thomas J. Maccarone, Thomas Kupfer, Edgar Najera Casarrubias, Liliana E. Rivera Sandoval, Aarran W. Shaw, Christoper T. Britt, Jan Van Roestel, David R. Zurek
Strongly Magnetized Accretion In Two Ultracompact Binary Systems, Thomas J. Maccarone, Thomas Kupfer, Edgar Najera Casarrubias, Liliana E. Rivera Sandoval, Aarran W. Shaw, Christoper T. Britt, Jan Van Roestel, David R. Zurek
Physics and Astronomy Faculty Publications and Presentations
We present the discoveries of two of AM CVn systems, Gaia14aae and SDSS J080449.49+161624.8, which show X-ray pulsations at their orbital periods, indicative of magnetically collimated accretion. Both also show indications of higher rates of mass transfer relative to the expectations from binary evolution driven purely by gravitational radiation, based on existing optical data for Gaia14aae, which show a hotter white dwarf temperature than expected from standard evolutionary models, and X-ray data for SDSS J080449.49+161624.8 which show a luminosity 10−100 times higher than those for other AM CVn at similar orbital periods. The higher mass transfer rates could be driven …
There Is Life On Mars, Colin M. Johnston, Olivier B. Cohen
There Is Life On Mars, Colin M. Johnston, Olivier B. Cohen
CAFE Symposium 2024
An extensive research project that involved the research of multiple major experiments and discoveries about possible life on the planet Mars. Facts, Data, conspiracies and theories have all been taken into account and provided in this project.
Axion-Polaritons In Quark Stars: A Possible Solution To The Missing Pulsar Problem, Efrain J. Ferrer, Vivian De La Incera
Axion-Polaritons In Quark Stars: A Possible Solution To The Missing Pulsar Problem, Efrain J. Ferrer, Vivian De La Incera
Physics and Astronomy Faculty Publications and Presentations
This paper proposes an alternative mechanism to solve the so-called missing pulsar problem, a standing paradox between the theoretical expectations about the number of pulsars that should exist in the galaxy center of the Milky Way and their absence in the observations. The mechanism is based on the transformation of incident γ rays into hybridized modes, known as axion-polaritons, which can exist inside highly magnetized quark stars with a quark matter phase known as the magnetic dual chiral density wave phase. This phase, which is favored over several other dense matter phases candidates at densities a few times nuclear saturation …
Extraterrestrial Life: The Possibility Of A Human-Alien Interaction, Ariana M. Piscoya
Extraterrestrial Life: The Possibility Of A Human-Alien Interaction, Ariana M. Piscoya
CAFE Symposium 2024
We all have heard of at least one case where someone assured having seen a flying extraterrestrial object. There are thousands of thousands of videos we can find online that “prove” the existence of aliens. In the hypothetical case where aliens are really out there, why haven't we been able to talk to them and look at them face-to-face? A human-extraterrestrial interaction has not yet been achieved for two reasons. First, alien energy is much more powerful than that of humans, so it would require thousands of thousands of years for the human race to develop a technology able to …
Flavors And Frailties Of Globalization, Nikhilesh Dholakia, Deniz Atik
Flavors And Frailties Of Globalization, Nikhilesh Dholakia, Deniz Atik
Markets, Globalization & Development Review
No abstract provided.
Life Beyond The Horizon: The Universe Was Born In A Black Hole, Zahria Patrick
Life Beyond The Horizon: The Universe Was Born In A Black Hole, Zahria Patrick
Undergraduate Research Symposium
It is a widely accepted fact that obtaining information about a black hole is a near-impossible task without being stretched like a spaghetti noodle and trapped in one due to its strong gravitational pull. If the universe exists in a black hole, however, it will mean that it could be possible to survive after crossing its inescapable borders. As surprising as all of this may seem, this theory has existed for quite a while amongst a few different physicists. One person that has shed light on and expanded people’s knowledge of this frightening theory is theoretical physicist, Nikodem Poplawski. The …
Low Complexity Radio Frequency Interference Mitigation For Radio Astronomy Using Large Antenna Array, Zaid Bin Tariq, Teviet Creighton, Louis Percy Dartez, Naofal Al-Dhahir, Murat Torlak
Low Complexity Radio Frequency Interference Mitigation For Radio Astronomy Using Large Antenna Array, Zaid Bin Tariq, Teviet Creighton, Louis Percy Dartez, Naofal Al-Dhahir, Murat Torlak
Physics and Astronomy Faculty Publications and Presentations
With the ongoing growth in radio communications, there is an increased contamination of radio astronomical source data, which hinders the study of celestial radio sources. In many cases, fast mitigation of strong radio frequency interference (RFI) is valuable for studying short lived radio transients so that the astronomers can perform detailed observations of celestial radio sources. The standard method to manually excise contaminated blocks in time and frequency makes the removed data useless for radio astronomy analyses. This motivates the need for better radio frequency interference (RFI) mitigation techniques for array of size M antennas. Although many solutions for mitigating …
Synchronicity: An Analysis Of Einstein's Halfway Rule, Preslava Nikolova
Synchronicity: An Analysis Of Einstein's Halfway Rule, Preslava Nikolova
Rushton Journal of Undergraduate Humanities Research
For the modern world to function, Global Positioning System satellites must synchronize to clocks on Earth. This paper examines a concept that underlies GPS systems, namely Albert Einstein’s halfway rule—the idea that a line of simultaneity exists between two events in different systems. This essay discusses how Einstein used conventionalist methods to establish ½ as a constant value for σ to take advantage of the property of symmetry.
Conventions, Definitions, Identities, And Other Useful Formulae, Robert A. Mcnees Iv
Conventions, Definitions, Identities, And Other Useful Formulae, Robert A. Mcnees Iv
Physics: Faculty Publications and Other Works
As the name suggests, these notes contain a summary of important conventions, definitions, identities, and various formulas that I often refer to. They may prove useful for researchers working in General Relativity, Supergravity, String Theory, Cosmology, and related areas.
Alfred Russel Wallace Notes 29. Extraterrestrial Entertainment: Are We Being Monitored By Alien Beings?, Charles H. Smith
Alfred Russel Wallace Notes 29. Extraterrestrial Entertainment: Are We Being Monitored By Alien Beings?, Charles H. Smith
Faculty/Staff Personal Papers
Alfred Russel Wallace (1823−1913) was an early advocate for the rational assessment of likelihood of extraterrestrial life. Current efforts to evaluate the situation have ranged from the heavily self-indulgent to the more objective, and it is still often difficult to decide just how much of the information we are receiving on the subject is dependable. An attempt is made here to cut through the haze and reduce the matter to elementals.
Uncover: Jwst Spectroscopy Of Three Cold Brown Dwarfs At Kiloparsec-Scale Distances, Sam E. Cutler, Et. Al.
Uncover: Jwst Spectroscopy Of Three Cold Brown Dwarfs At Kiloparsec-Scale Distances, Sam E. Cutler, Et. Al.
Astronomy Department Faculty Publication Series
We report JWST/NIRSpec spectra of three distant T-type brown dwarfs identified in the Ultradeep NIRSpec and NIRCam ObserVations before the Epoch of Reionization (UNCOVER) survey of the Abell 2744 lensing field. One source was previously reported as a candidate T dwarf on the basis of NIRCam photometry, while two sources were initially identified as candidate active galactic nuclei. Low-resolution 1–5 μm spectra confirm the presence of molecular features consistent with T dwarf atmospheres, and comparison to spectral standards infers classifications of sdT1, T6, and T8–T9. The warmest source, UNCOVER-BD-1, shows evidence of subsolar metallicity, and atmosphere model fits indicate …
X-Ray Detection Of The Most Extreme Star-Forming Galaxies At The Cosmic Noon Via Strong Lensing, Q Daniel Wang, Carlos Garcia Diaz, Min S. Yun, Et. Al.
X-Ray Detection Of The Most Extreme Star-Forming Galaxies At The Cosmic Noon Via Strong Lensing, Q Daniel Wang, Carlos Garcia Diaz, Min S. Yun, Et. Al.
Astronomy Department Faculty Publication Series
Hyperluminous infrared galaxies (HyLIRGs) are the most extreme star-forming systems observed in the early Universe, and their properties still elude comprehensive understanding. We have undertaken a large XMM–Newton observing programme to probe the total accreting black hole population in three HyLIRGs at z = 2.12, 3.25, and 3.55, gravitationally lensed by foreground galaxies. Selected from the Planck All-Sky Survey to Analyse Gravitationally lensed Extreme Starbursts (PASSAGES), these HyLIRGs have apparent infrared luminosities >1014 L⊙. Our observations revealed X-ray emission in each of them. PJ1336+49 appears to be dominated by high-mass X-ray binaries (HMXBs). Remarkably, the luminosity …
Alma-Legus. Ii. The Influence Of Subgalactic Environments On Molecular Cloud Properties, Daniela Calzetti, Et. Al.
Alma-Legus. Ii. The Influence Of Subgalactic Environments On Molecular Cloud Properties, Daniela Calzetti, Et. Al.
Astronomy Department Faculty Publication Series
We compare the molecular cloud properties in subgalactic regions of two galaxies, barred spiral NGC 1313, which is forming many massive clusters, and flocculent spiral NGC 7793, which is forming significantly fewer massive clusters despite having a similar star formation rate to NGC 1313. We find that there are larger variations in cloud properties between different regions within each galaxy than there are between the galaxies on a global scale, especially for NGC 1313. There are higher masses, line widths, pressures, and virial parameters in the arms of NGC 1313 and the center of NGC 7793 than in the interarm …
Uncover Spectroscopy Confirms The Surprising Ubiquity Of Active Galactic Nuclei In Red Sources At Z > 5, Sam E. Cutler, John R. Weaver, Katherine E. Whitaker, Et. Al.
Uncover Spectroscopy Confirms The Surprising Ubiquity Of Active Galactic Nuclei In Red Sources At Z > 5, Sam E. Cutler, John R. Weaver, Katherine E. Whitaker, Et. Al.
Astronomy Department Faculty Publication Series
The James Webb Space Telescope is revealing a new population of dust-reddened broad-line active galactic nuclei (AGN) at redshifts z ≳ 5. Here we present deep NIRSpec/Prism spectroscopy from the Cycle 1 Treasury program Ultradeep NIRSpec and NIRCam ObserVations before the Epoch of Reionization (UNCOVER) of 15 AGN candidates selected to be compact, with red continua in the rest-frame optical but with blue slopes in the UV. From NIRCam photometry alone, they could have been dominated by dusty star formation or an AGN. Here we show that the majority of the compact red sources in UNCOVER are dust-reddened AGN: 60% …
Opacities Of S-Type Stars: The Singlet B¹⊓−X¹Σ⁺, B¹⊓−A¹Δ, And C¹Σ⁺−X¹Σ⁺ Band Systems Of Zro, Peter F. Bernath, Manish Bhusal, Jacques Liévin
Opacities Of S-Type Stars: The Singlet B¹⊓−X¹Σ⁺, B¹⊓−A¹Δ, And C¹Σ⁺−X¹Σ⁺ Band Systems Of Zro, Peter F. Bernath, Manish Bhusal, Jacques Liévin
Chemistry & Biochemistry Faculty Publications
The ZrO B1Π–X1Σ+, B1Π–A1Δ, and C1Σ+–X1Σ+ band systems are important opacity sources in the near-infrared and optical spectra of S-type stars. A total of 21 rovibronic bands with v'' ≤ 7 and v' ⩽ 5 were observed and fit for the B1Π–X1Σ+ transition, five bands for the 90ZrO B1Π–A1Δ transition and one band for the 90ZrO C1Σ+–X1Σ+ transition. All band …
Glitch Veto Based On Unphysical Gravitational Wave Binary Inspiral Templates, Raghav Girgaonkar, Soumya D. Mohanty
Glitch Veto Based On Unphysical Gravitational Wave Binary Inspiral Templates, Raghav Girgaonkar, Soumya D. Mohanty
Physics and Astronomy Faculty Publications and Presentations
Transient signals arising from instrumental or environmental factors, commonly referred to as glitches, constitute the predominant background of false alarms in the detection of gravitational waves in data collected from ground-based detectors. Therefore, effective data analysis methods for vetoing glitch-induced false alarms are crucial to enhancing the sensitivity of a search for gravitational waves. We present a veto method for glitches that impact matched filtering-based searches for binary inspiral signals. The veto uses unphysical sectors in the space of chirp time parameters as well as an unphysical extension including negative chirp times to efficiently segregate glitches from gravitational wave signals …
Unbiased Estimation Of Gravitational-Wave Anisotropies From Noisy Data, Nikolaos Kouvatsos, Alexander C. Jenkins, Arianna I. Renzini, Joseph D. Romano, Mairi Sakellariadou
Unbiased Estimation Of Gravitational-Wave Anisotropies From Noisy Data, Nikolaos Kouvatsos, Alexander C. Jenkins, Arianna I. Renzini, Joseph D. Romano, Mairi Sakellariadou
Physics and Astronomy Faculty Publications and Presentations
One of the most exciting targets of current and future gravitational-wave observations is the angular power spectrum of the astrophysical GW background. This cumulative signal encodes information about the large-scale structure of the Universe, as well as the formation and evolution of compact binaries throughout cosmic time. However, the finite rate of compact binary mergers gives rise to temporal shot noise, which introduces a significant bias in measurements of the angular power spectrum if not explicitly accounted for. Previous work showed that this bias can be removed by cross-correlating GW sky maps constructed from different observing times. However, this work …
Ultradeep Atca Imaging Of 47 Tucanae Reveals A Central Compact Radio Source, Alessandro Paduano, Arash Bahramian, James C. A. Miller-Jones, Adela Kawka, Tim J. Galvin, Liliana E. Rivera Sandoval, Sebastian Kamann, Jay Strader, Laura Chomiuk, Craig O. Heinke
Ultradeep Atca Imaging Of 47 Tucanae Reveals A Central Compact Radio Source, Alessandro Paduano, Arash Bahramian, James C. A. Miller-Jones, Adela Kawka, Tim J. Galvin, Liliana E. Rivera Sandoval, Sebastian Kamann, Jay Strader, Laura Chomiuk, Craig O. Heinke
Physics and Astronomy Faculty Publications and Presentations
We present the results of an ultradeep radio continuum survey, containing ∼480 hr of observations, of the Galactic globular cluster 47 Tucanae with the Australia Telescope Compact Array. This comprehensive coverage of the cluster allows us to reach rms noise levels of 1.19 μJy beam−1 at 5.5 GHz, 940 nJy beam−1 at 9 GHz, and 790 nJy beam−1 in a stacked 7.25 GHz image. This is the deepest radio image of a globular cluster and the deepest image ever made with the Australia Telescope Compact Array. We identify ATCA J002405.702-720452.361, a faint (6.3 ± 1.2 μJy at 5.5 …
Studying The Impact Of The Geospace Environment On Solar Lithosphere Coupling And Earthquake Activity, Dimitar Ouzounov, Galina Khachikyan
Studying The Impact Of The Geospace Environment On Solar Lithosphere Coupling And Earthquake Activity, Dimitar Ouzounov, Galina Khachikyan
Mathematics, Physics, and Computer Science Faculty Articles and Research
In solar–terrestrial physics, there is an open question: does a geomagnetic storm affect earthquakes? We expand research in this direction, analyzing the seismic situation after geomagnetic storms (GMs) accompanied by the precipitation of relativistic electrons from the outer radiation belt to form an additional radiation belt (RB) around lower geomagnetic lines. We consider four widely discussed cases in the literature for long-lived (weeks, months) RBs due to GMs and revealed that the 1/GMs 24 March 1991 with a new RB at L~2.6 was followed by an M7.0 earthquake in Alaska, 30 May 1991, near footprint L = 2.69; the 2/GMs …
Radio Insights Into Gamma-Ray Mysteries, Seth M. Bruzewski
Radio Insights Into Gamma-Ray Mysteries, Seth M. Bruzewski
Physics & Astronomy ETDs
In the time since its launch, the \textit{Fermi Gamma-Ray Space Telescope} has provided new and unparalleled views of the $\gamma$-ray sky, dramatically increasing our understanding of sources of high-energy radiation. During that same time, however, its ``unassociated'' sources have provided a consistent mystery: approximately one third of the modern gamma-ray sky remains completely unaccounted for in other electromagnetic regimes. While some of the fainter sources simply pose challenges in achieving the necessary signal-to-noise ratio, others are well constrained and have resisted traditional investigations for years, and in some cases, for over a decade. Radio astronomy has traditionally been the best …
Modeling Lithographic Quantum Dots And Donors For Quantum Computation And Simulation, Mitchell Ian Brickson
Modeling Lithographic Quantum Dots And Donors For Quantum Computation And Simulation, Mitchell Ian Brickson
Physics & Astronomy ETDs
Our first focus is on few-hole quantum dots in germanium. We use discontinous Galerkin methods to discretize and solve the equations of a highly detailed k·p model that describes these systems, enabling a better understanding of experimental magnetospectroscopy results. We confirm the expected anisotropy of single-hole g-factors and describe mechanisms by which different orbital states have different g-factors. Building on this, we show that the g-factors in Ge holes are suciently sensitive to details of the device electrostatics that magnetospectroscopy data can be used to make a prediction of the underlying confinement potential. The second focus is on designing quantum …
A Creationist Model Of Impacts Throughout The Solar System, Trevor Holt
A Creationist Model Of Impacts Throughout The Solar System, Trevor Holt
Proceedings of the International Conference on Creationism
The Biblical Creationist movement has been scant in attempts to explain features throughout the Solar System such as craters, water ice and other ices, possible flowing water, icy satellites, planet rings, and the asteroids and comets. It has been assumed that much of this was part of the initial Creation. I maintain that the initial Creation was considered “very good” and would not have included destructive items and hence would not show the results of impacts. A model has been developed which can explain all these features being caused by impacts over a short time period The Biblical foundations are …
Four Comets Of 2020 Are First Returning Ice Bodies From The Wave Which Brought Water To Earth At The Time Of Noah's Flood., Trevor Holt
Proceedings of the International Conference on Creationism
Introduction. The year 2020 saw the arrival into the Solar System of four comets which have their closest approach to the Sun all within thirty eight days. These comets are:C/2020 F3 Neowise, perihelion 0.296 AU 2020 July 03, C/2020 F8 Swan, perihelion 0.430 AU 2020 May 27, C/2019 Y4 Atlas, perihelion 0.253 AU 2020 May 31 and C/2019 U6 Lemmon, perihelion 0.914 2020 June 18.This gives support to the reliability of the Genesis record of the global flood and the chronology given in the genealogy of Jesus Christ. A paper was presented by the author at the 2013 International Creationist …
Expansion Of The Cosmic Fabric Model To The Inelastic Case, Cameron Ward, Mark Horstemeyer, Tichomir G. Tenev
Expansion Of The Cosmic Fabric Model To The Inelastic Case, Cameron Ward, Mark Horstemeyer, Tichomir G. Tenev
Proceedings of the International Conference on Creationism
This research expands Tenev’s Cosmic Fabric Model (CFM) to include the large strain and inelastic cases which provide new insights into anomalies of General Relativity. CFM considers an ethereal universe (the "cosmic fabric") and applies continuum mechanics at the galactic and cosmic length scales to effectively recover equations from General Relativity where the Laplacian of strain corresponds to the Laplacian of the gravitational potential in the weak field approximation. While still at the very beginning of the research, this project explores several possible leads related to the inelastic behavior of the fabric. (A) With a Poisson ratio of 1, the …