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Recent Articles in Other Astrophysics and Astronomy

Quantum Man, Julian Voss-Andreae Claremont Colleges

Quantum Man, Julian Voss-Andreae

The STEAM Journal

According to quantum physics, the world is fundamentally quite different than it seems. Drawing inspiration from the underlying nature of reality, former quantum physicist Julian Voss-Andreae created an image of a walking human as a quantum object. Made up of parallel sheets of steel, the sculpture is a metaphor for the counter-intuitive world of quantum physics. Symbolizing the dual nature of matter with the appearance of classical reality on the surface and cloudy quantum behavior underneath, the sculpture seems to consist of solid steel when seen from the front, but dissolves into almost nothing when seen from the side.

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Advancements In Modeling Self-Consistent Core-Collapse Supernovae With Chimera, Merek Austin Chertkow University of Tennessee, Knoxville

Advancements In Modeling Self-Consistent Core-Collapse Supernovae With Chimera, Merek Austin Chertkow

Doctoral Dissertations

Using a sophisticated program named CHIMERA, we perform numerical simulations of the end of a massive star's life when its core can no longer support itself through electron degeneracy pressure. After a violent collapse to super-nuclear densities, the core releases its binding energy (10^53 ergs) in the form of neutrinos. Simulations have shown that a small fraction of these neutrinos' energy is deposited into the matter above the forming neutron star, which drives a delayed explosion. Throughout this process, the oxygen and lighter elements that had composed the star's outer-core and envelope experience shock-driven explosive nucleosynthesis, forming ...

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Extending Newton’S Apsidal Theorem: Effective Angular Momentum, Cameron J. Tuckerman Cleveland State University

Extending Newton’S Apsidal Theorem: Effective Angular Momentum, Cameron J. Tuckerman

Undergraduate Research Posters 2012

Apsidal Shift, or the angular displacement of the orbital apses, is an important quantity in the study of the orbits of planets, starts, and other celestial bodies. The apparent lack of shift of our nearby planets is that on which Sir Isaac Newton based his assumption of the inverse-square relationship in Universal Gravity. We are able to find excellent approximations for the Apsidal Shift and use our results to generalize Newton's Apsidal Theorem.

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Leds And Astronomy, Britny N. Delp, Stephen M. Pompea California Polytechnic State University

Leds And Astronomy, Britny N. Delp, Stephen M. Pompea

STEM Teacher and Researcher (STAR) Program Posters

Using a Czerny-Turner spectrometer, 45 different types of outdoor lights were categorized. These spectra were used to determine how useful the light is to human eyes and how dark skies friendly these lights are. Dark skies friendly lighting means that little to no light shines above a right angle to the light, and should emit as little as possible below 500nm (green) wavelengths. The short wavelengths present a problem to astronomers in the form of Rayleigh scattering. The following criterion were used in selecting the best source for urban and rural lighting: color rendition measured by color rendering index (CRI ...

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Telescope Assembly Alignment Simulator Performance Optimization, Joshua G. Thompson, Brian Eney, Zaheer Ali, Bob Thompson California Polytechnic State University

Telescope Assembly Alignment Simulator Performance Optimization, Joshua G. Thompson, Brian Eney, Zaheer Ali, Bob Thompson

STEM Teacher and Researcher (STAR) Program Posters

The Telescope Assembly Alignment Simulator (TAAS) calibrates scientific instruments (SI’s) that are installed on the Stratospheric Observatory For Infrared Astronomy (SOFIA). An SI’s accuracy is directly dependent on the consistent performance of the TAAS, which has never been fully characterized. After designing various thermal and optical experiments to identify the current unknowns of TAAS, we now have a far better grasp on how the equipment behaves.

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Shedding Light On The Formation Of Stars And Planets: Numerical Simulations With Radiative Transfer, Patrick D. Rogers McMaster University

Shedding Light On The Formation Of Stars And Planets: Numerical Simulations With Radiative Transfer, Patrick D. Rogers

Open Access Dissertations and Theses

We use numerical simulations to examine the fragmentation of protostellar discs via gravitational instability (GI), a proposed formation mechanism for gas-giant planets and brown dwarfs. To accurately model heating and cooling, we have implemented radiative transfer (RT) in the TreeSPH code Gasoline, using the flux-limited diffusion approximation coupled to photosphere boundary cooling. We present 3D radiation hydrodynamics simulations of discs that are gravitationally unstable in the inner 40 AU; these discs do not fragment because the cooling times are too long. In prior work, one of these discs was found to fragment; however, we demonstrate that this resulted from an ...

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Claremont Colleges

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Britny Delp California Polytechnic State University

Stephen Pompea California Polytechnic State University

Joshua Thompson California Polytechnic State University

Zaheer Ali California Polytechnic State University

Emil Prodanov Dublin Institute of Technology

Bob Thompson California Polytechnic State University

Brian Eney California Polytechnic State University

Michael Lucas University of South Florida

Jonathan Blackledge Dublin Institute of Technology

Timothy Wolf California Polytechnic State University

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Popular Articles

Quantum Man

Leds And Astronomy, Stephen Pompea, Britny Delp

Telescope Assembly Alignment Simulator Performance Optimization, Zaheer Ali, Bob Thompson, Brian Eney, Joshua Thompson

The Search For The Missing Mantles Of Differentiated Asteroids: Evidence From Taxonomic A-Class Asteroids And Olivine-Dominated Achondrite Meteorites, Michael Lucas

Manev Potential And General Relativity, Emil Prodanov

Why Is An Einstein Ring Blue?, Jonathan Blackledge

Shedding Light On The Formation Of Stars And Planets: Numerical Simulations With Radiative Transfer, Patrick Rogers

Analysis Of The Blazar 1es1218+30.4, Timothy Wolf

Investigating The Environment Of Mg Ii Absorption Line Systems With The Sloan Digital Sky Survey, Michelle Caler

Investigating The Formation Of Extra-Galactic Radio Jets

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