david a. riethmiller - Department of Physics & Astronomy - Ohio ...
david a. riethmiller - Department of Physics & Astronomy - Ohio ...
david a. riethmiller - Department of Physics & Astronomy - Ohio ...
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DAVID A. RIETHMILLER<br />
CURRICULUM VITAE<br />
(Current as <strong>of</strong> January 2013)<br />
(online at http://www.phy.ohiou.edu/~rieth/CV.html)<br />
Current Position and Address:<br />
Graduate Assistant<br />
Email: rieth@phy.ohiou.edu<br />
Web: www.phy.ohiou.edu/~rieth<br />
Office Phone: 740-593-1690<br />
<strong>Department</strong> <strong>of</strong> <strong>Physics</strong> and <strong>Astronomy</strong><br />
251B Clippinger Laboratories<br />
<strong>Ohio</strong> University<br />
Athens, OH 45701<br />
Education:<br />
Ph.D. Candidate – <strong>Ohio</strong> University (expected completion: June 2013)<br />
Advisor: Dr. Thomas Statler<br />
B.S. – Carnegie Mellon University, <strong>Physics</strong> / Astrophysics, May 2006<br />
Advisor: Dr. Richard Griffiths<br />
Research:<br />
Ph.D. Thesis Topic – <strong>Ohio</strong> University (current):<br />
My current research explores the hydrodynamic history <strong>of</strong> elliptical galaxies, simulating various<br />
prescriptions for interstellar gas cooling and AGN energy feedback against real X-ray<br />
observations <strong>of</strong> ellipticals. The goal is to isolate those prescriptions which may be plausible, and<br />
rule out those that are not. Simulations are executed with the massively parallel Tree-SPH code<br />
Gadget2, which models fluid attributes <strong>of</strong> gas and dark matter as individual particles.<br />
Graduate Research – <strong>Ohio</strong> University (Fall 2007-Spring 2008):<br />
Studied the evolution <strong>of</strong> rotation rates <strong>of</strong> Near-Earth Asteroids (NEA). Used the 2.4-meter<br />
telescope at MDM Observatory to obtain a series <strong>of</strong> 30-second r-band exposures for selected<br />
NEAs. Because <strong>of</strong> asymmetries in the asteroidʼs shape, the amount <strong>of</strong> reflected sunlight changes<br />
as a function <strong>of</strong> time; thus, the resulting light curve gives the asteroidʼs rotation period.<br />
Research Experience for Undergraduates – Georgia Institute <strong>of</strong> Technology (Summer 2005):<br />
Refined light curve and radial velocity data from the eclipsing binary star system MM Herculis.<br />
Light curve data on this system was compiled for several colors in 1982, but better Fourier fitting<br />
s<strong>of</strong>tware was available in 2005. More accurate light curve allowed better determination <strong>of</strong> the<br />
stellar masses involved.<br />
Undergraduate Research – Carnegie Mellon University (Spring 2005, Fall 2005):<br />
Catalogued ultra luminous X-ray data from the Chandra X-Ray Observatory and XMM-Newton<br />
Observatory. Used the X-SPEC s<strong>of</strong>tware to to fit various stellar models to the X-ray data from<br />
two galaxies, identifying point sources which exceeded the Eddington luminosity.
Additional Research Interests:<br />
Hydrodynamics and the hot interstellar medium <strong>of</strong> elliptical galaxies, AGN accretion and feedback<br />
mechanisms, sub-resolution accretion physics<br />
Courses Taught / Assisted:<br />
Introductory <strong>Physics</strong> Lab (1): Algebra-based mechanics <strong>of</strong> solids and liquids. 15 undergraduates per lab.<br />
Introductory <strong>Physics</strong> Lab (2): Algebra-based electricity, magnetism, heat, thermodynamics, waves, and<br />
sound. 15 undergraduates per lab.<br />
General <strong>Physics</strong> Lab (1): Classical physics with calculus and vectors. Newtonian mechanics, rotational<br />
dynamics, gravitation. 15 undergraduates per lab.<br />
General <strong>Physics</strong> Lab (3): Calculus-based capacitance, electric current and circuits, magnetism and<br />
magnetic fields, electric induction, A.C. circuits, electromagnetic waves, geometrical optics,<br />
interference, and diffraction <strong>of</strong> light. 15 undergraduates per lab.<br />
Introductory <strong>Astronomy</strong>: General introduction to astronomy, with emphasis on structure <strong>of</strong> the universe<br />
beyond the solar system.<br />
Graduate Courses Completed:<br />
Classical Mechanics<br />
Electrodynamics I & II<br />
Statistical Mechanics<br />
Quantum Mechanics I & II<br />
Math Methods <strong>of</strong> <strong>Physics</strong> I & II<br />
Stellar Astrophysics<br />
Astrophysics <strong>of</strong> the Interstellar Medium<br />
Extragalactic Astrophysics<br />
Observational Astrophysics Lab<br />
General Relativity<br />
Solid State <strong>Physics</strong><br />
Numerical Methods in Computer Programming<br />
Programming Expertise:<br />
Parallel MPI implementation, interpolation techniques, finite time differencing, numerical integration<br />
methods, smoothed particle hydrodynamics, astronomical data reduction, Fourier analysis,<br />
acceptance-rejection algorithms, weighted Voronoi tesselations, Kepler orbit computation<br />
Languages: C/C++, Python, IDL, Fortran, IRAF, Shell script<br />
Posters:<br />
May 3, 2012<br />
Heating and Cooling in Elliptical Galaxies (<strong>Ohio</strong> University Student Expo)<br />
http://www.phy.ohiou.edu/~rieth/talks/HydroSims.pdf
Presentations: (available at http://www.phy.ohiou.edu/~rieth/presentations.html)<br />
Jan. 9, 2013 Simulations <strong>of</strong> Episodic AGN Feedback Conditions in Elliptical Galaxies (AAS Meeting)<br />
Oct. 10, 2012 The Triggering Probability <strong>of</strong> Radio-Loud AGN (<strong>Ohio</strong> Unversity Astro Seminar)<br />
Sept. 11, 2012 Finite Time Differencing: Numerical Algorithms (Computational Phyics Seminar)<br />
June 1, 2012 Heating and Cooling in Elliptical Galaxies (Thesis Committee Update)<br />
Oct. 12, 2011 The 2011 Nobel Prize in <strong>Physics</strong>: Accelerating Universal Expansion (OU Astro Seminar)<br />
June 8, 2011 Is Molecular Gas Necessary for Star Formation? (OU Astro Seminar)<br />
Jan. 26, 2011 Quasi-Stars and the Cosmic Evolution <strong>of</strong> Supermassive Black Holes (OU Astro Seminar)<br />
Nov. 10, 2010 LSST: AGN and Supernovae (OU Astro Seminar)<br />
Apr. 14, 2010 Cold Mode Accretion in Galaxy Formation (OU Astro Seminar)<br />
Mar. 16, 2009 Feedback in Normal Elliptical Galaxies (Doctoral Thesis Prospectus)<br />
Nov. 8, 2007 Analemma: The Apparent Local Trajectory <strong>of</strong> the Sun (Computational Phyics Seminar)<br />
Oct. 17, 2007 X-Ray Measurements <strong>of</strong> the Mass <strong>of</strong> M87 (OU Astro Seminar)<br />
Sept. 26, 2007 Modeling the YORP Effect<br />
Publications & Conference Proceedings:<br />
D. Riethmiller, T.S. Statler. AGN Feedback in Elliptical Galaxies I: Hydro Simulations within a Static Darm<br />
Matter Potential. In preparation.<br />
D. Riethmiller, T.S. Statler. AGN Feedback in Elliptical Galaxies II: Hydro Simulations within a Dynamic<br />
Dark Matter Potential. In preparation.<br />
D. Riethmiller, T.S. Statler. Simulations <strong>of</strong> Episodic AGN Feedback Conditions in Elliptical Galaxies. AAS<br />
Meeting held January 6-10, 2013 in Long Beach, California. Meeting #221, Session #303.07<br />
T.S. Statler, D. Cotto-Figueroa, D. Riethmiller, K. Sweeney. Size Matters: The Rotation Rates <strong>of</strong> Small<br />
Near-Earth Asteroids. Icarus, submitted.<br />
T.S. Statler, D. Cotto-Figueroa, D. Riethmiller. The Rotation Rate Distribution <strong>of</strong> Small Near-Earth<br />
Objects. Asteroids, Comets, Meteors 2008 held July 14-18, 2008 in Baltimore, Maryland. LPI<br />
Contribution No. 1405, paper id. 8359.