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Showing 1 to 17 of 17 for “"Other Astrophysics and Astronomy"”.
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Determination of the Parameter Limits for Artificial Non-random Microwave Signal Detection
<p>The Doppler shift of small bandwidth (several Hertz) microwave signals makes identification of spectral features difficult; the Doppler individual bandwidth shift can be a factor of hundreds or thousands of times greater than the bandwidth. A computer model supplied by the National Aeronautics …
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Multifrequency Scintillation in the Polar Caps
… of kilometers are capable of modifying the phase and amplitude of a radio signal in a rapid random manner in a process called scintillation. The Coherent Electromagnetic Radio Tomography (CERTO) and the Canadian High Arctic Ionospheric Network (CHAIN) are two different networks of scintillation …
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Factors Predicting Public’s Willingness to Support National Aeronautics and Space Administration’s Artemis Mission
… program aspires to return astronauts to the moon and aims to land the first woman and person of color on the lunar surface. The endeavor symbolizes the next evolution in space exploration and serves as a testament to the human spirit of discovery. In the face of this significant undertaking, …
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Sparse Aperture Speckle Interferometry Telescope Active Optics Control System
… A prototype active optics system was created and fitted to a telescope frame using relatively low cost components. The active optics system was capable of tipping, tilting, and elevating the mirrors to align reflected star light. The low cost mirror position actuators have a resolution of 31 …
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Mineral-Surface Chemistry of Hydroxyapatite and Urea-Rich Solutions
… requires six essential elements: C, H, O, N, P, and S. These elements are present in gaseous form, with the exception of phosphorus, which is primarily found in solid mineral sources. Phosphorus in biological systems is significant through its involvement in metabolic functions (<em>e.g.,</em> …
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Transmutation
… change itself. I am inspired by the doubling and layering effects that came out of Surrealist Photography. Scale, fracture, and doubling are intentional components of my process. I combine those methods to create complex works of art, focusing on the untamable light that I hope to capture when …
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Observations and Light Curve Analysis of Transiting Extra-Solar Planets
… process to determining physical characteristics and orbital properties. The research was conducted with two telescopes of different sizes (16” and 12”) at multiple sites in order to refine the detection process. Both Maxim DL and Mira Pro x64 software were used to process the resulting images. …
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Active Magnetic Radiation Shielding For Long-Duration Human Spaceflight
… magnetosphere can</p> <p>produce both acute and chronic health risks and thus become limiting factors for</p> <p>NASA’s planned mission to Mars by the 2030s. Radiation exposure on a Mars mission</p> <p>is delivered primarily by high energy ions from galactic cosmic rays and moderate</p> …
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Stacking the Gamma-ray Sky to Search for Faint Astrophysical Populations
… from stellar flares to pulsating neutron stars, and from interstellar clouds to the center of the Milky Way Galaxy. Entering the 13th year of its orbit around Earth, the Fermi Space Gamma-ray Telescope has been continually surveying the γ-ray sky with its Large Area Telescope (LAT) on board. The …
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Streaming Instabilities in Class 0/I Disks
… form in protoplanetary disks, fragmentation and the radial drift of pebbles inhibit the growth of grains to planetesimals. To overcome these barriers, effective localized dust clumping on a short enough time scale is required. One promising solution to this problem is the streaming …
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Identifying and Analyzing Multi-Star Systems Among TESS Planetary Candidates Using Gaia
… represent a young, rapidly advancing subfield of astrophysics where much is still unknown. It is therefore important to analyze trends among their parameters to learn more about these systems. More complexity is added to these systems with the presence of additional stellar companions. To study …
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Dark Matter Halo Concentration and the Evolution of Spiral Structure in N-Body, Barred Spiral Galaxies
… of spiral arm structure in the disk), P, and various indicators of central mass concentration, as well as the theoretical relationship between halo mass concentration and the density of visible matter in the central part of the galaxy, we look at a possible relationship between P and cvir …
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Classification of Variable Stars using Convolutional Neural Network
… Networks (CNNs), for the process of classifying and identifying variable stars through the analysis of unprocessed light curves from Transiting Exoplanet Survey Satellite (TESS). As astronomical data is becoming increasingly complex, and as advanced missions deploy sophisticated instruments for …
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A Spectrum of Light: Speculative Poetry of Celestial Bodies and Astrophysics
… on celestial objects within our solar system and larger bodies outside of our solar system, some of which are only theorized to exist. The author finishes the collection with introspective works, laying bare vulnerabilities and insecurities.</p>
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Development and Testing of a New Method for Velocity-Selecting White Dwarfs from Gaia by Galactic Population
… galaxies including the Milky Way reveal thin and thick disk and halo populations which must all be accounted for in formation theories and likely have distinct ages. Using the Milky Way as an example to probe this question, we are studying the formation history of these structures.</p> <p>This …
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CONTIGO Y LAS ESTRELLAS
… time travel watch. Her relationship to her mother launches her into a whirlwind of events that lead her to seeing her past in front of her. This novel is a multiple-perspective book that details the anxieties and brightness that comes with learning about time travel and having a willing …
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Robust Spacecraft Autonomy for Deep Space Exploration in Special Euclidean Group SE(3)
… but the ambitious goals of the Artemis program and the Moon-to-Mars campaign bring forward an array of new challenges. For scientists and engineers who are designing these missions, these challenges highlight the complexity and excitement of venturing beyond what we know.</p> <p>Many of these …