Home address Steven Diehl 621 Carriage Hill Drive Athens, OH 45701, U.S. Phone: 740-594-1025 diehl@helios.phy.ohiou.edu http://www.phy.ohiou.edu/ diehl Work address Astrophysical Institute Department of Physics & Astronomy Clippinger Laboratories 251B Athens, OH 45701, U.S. Phone: 740-593-1711 Education Ph.D., Physics, expected Dec. 2005; GPA: 3.95 (as of 04/05) Title: Morphological and Spectral Properties of the Hot Gas in Elliptical Galaxies: Chandra Observations and Hydrodynamic Simulations Advisor: Dr. Thomas S. Statler, Athens, OH, United States Vordiplom (German B.S.), Physics, Summer 2001; GPA: 3.7 Universität des Saarlandes, Saarbrücken, Germany Vordiplom (German B.S.), Mathematics, Summer 2001; GPA: 3.5 Universität des Saarlandes, Saarbrücken, Germany Academic Honors Awarded Outstanding Teaching Assistant by the department of Physics & Astronomy () for the year 2001/02 Awarded Best Physics Abitur 1999 by the Illtalgymnasium Illingen (Abitur = final high school qualifying exam to attend university in Germany) Research Research Assistant, Advisor: Thomas S. Statler April 2002 Present Athens, OH, United States Conducted an X-ray survey of 70 elliptical galaxies in the Chandra data archive, extracting morphological as well as spectral parameters of the hot gas component. Discovered fundamental relationship between X-ray half light radius, average surface brightness and temperature of the hot gas, dubbed the X-ray gas fundamental plane. Created X-ray catalogue containing spectral and spatial information for over 4000 individual point sources. Performed analysis of luminosity function and developed new method to remove resolved and unresolved sources from diffuse gas emission. Developed new optimal adaptive spatial binning technique, using weighted Voronoi tesselations ( WVT-Binning ) to enforce minimum signal-to-noise requirements. Technique is essential for spatial X-ray analysis, and transferrable to a wide variety of other data, such as integral field spectroscopic data.
Research (continued) Visiting Student, Los Alamos National Laboratories Sponsor: Christopher Fryer (LANL) Nov. Dec. 2003, planned August 2005 Los Alamos, NM, United States Transformed an existing parallel, hierarchical tree Smooth Particle Hydrodynamics (SPH) code for supernova explosions to be used for three-dimensional elliptical galaxy merger simulations. Continuing collaboration with Christopher Fryer at Los Alamos, New Mexico as part of my doctoral dissertation. Teaching Teaching Assistant for Physics & Astronomy September 2001 March 2004 Athens, OH, United States Lab instructor and recitation sessions for various undergraduate classes: Physics 250 Series: Classical physics (Newtonian rotational dynamics, gravitation, Fluids, simple harmonic motion, wave phenomena, thermal properties of matter, heat and thermodynamics, electrostatics). Astro 100: General Introduction to Astronomy (sun, stars and galaxies, interstellar matter, blackholes, Big Bang theory, evolution of the universe). Teaching Assistant for Mathematics Universität des Saarlandes September 2000 August 2001 Saarbrücken, Germany Graded weekly problem sets and held recitation sessions accompanying the main mathematics lectures Analysis I and II for Prof. Wittstock. Language Skills Native language: German Fluent in English and French Computer Skills Expert knowledge of the Unix/Linux operating system and related applications. Well-versed in scripting languages such as sh, csh and s-lang, familiar with TCL d with data reduction and analysis packages, such as CIAO, XSPEC, Sherpa, IRAF Expert knowledge of programming languages C and IDL, advanced knowledge of Fortran77, familiar with Java. Skillful in parallel programming, including hydrodynamics and N-body tree algorithms Advanced knowledge of the professional typesetting package L A TEX, to the level of class file modifications. Proficient in Windows 95/98/ME/XP, Dos, Microsoft Word, Excel, Powerpoint and Corel Draw. Strong graphic-design skills useful in presentations and publications. Competent in web programming (HTML, JavaScript, CSS)
Other Author of the official L A TEXthesis and dissertation template, using class files Actively involved in the public outreach program of s Astrophysical Institute, including activities such as star walks, telescope nights or solar viewing events. Assisted in development of a new undergraduate laboratory experiment for solar spectroscopy, supervised by Dr. Klöpperpieper (Universität des Saarlandes). Developped computer-based experiment control interface using Origin. Former active member of the Fachschaftsrat Physik at the Universität des Saarlandes, Saarbrücken, Germany (non-profit student organization, representing the physics students of the university). Society Memberships American Astronomical Society AAS Division on Dynamical Astronomy AAS High-Energy Astronomy Division Conferences and Workshops Attended American Astronomical Society (AAS) meeting 205, San Diego, CA, January 2005 Galaxies viewed with Chandra workshop, Cambridge, MA, July 2004 Spring meeting of the Ohio Section of the American Physical Society (OSAPS), Athens, OH, April 2004 The Riddle of Cooling Flows in Galaxies and Clusters of Galaxies, Charlottesville, VA, June 2003 International X-ray school, Berkeley Springs, WV, August 2002
Dissertation Morphological and Spectral Properties of the Hot Gas in Elliptical Galaxies: Chandra Observations and Hydrodynamic Simulations Advisor: Thomas S. Statler in preparation submission expected December 2005 Refereed Publications S. Diehl & T.S. Statler, The Chandra X-ray Gas Fundamental Plane of Normal Elliptical Galaxies, in preparation, submission expected May 2005 S. Diehl & T.S. Statler, Chandra s view of Elliptical Galaxies: X-ray Scaling Relations and Morphologies, in preparation, submission expected June 2005 S. Diehl & T.S. Statler, Adaptive Binning with Weighted Voronoi Tesselations, in preparation, submission expected July 2005 Published Abstracts S. Diehl & T.S. Statler, The Chandra X-ray Fundamental Plane for Normal Elliptical Galaxies, American Astronomical Society Meeting Abstracts, vol. 205.9211D, December 2004 Conference Presentations S. Diehl & T.S. Statler, The Chandra X-ray Fundamental Plane for Normal Elliptical Galaxies, American Astronomical Society (AAS) meeting 205, # 92.11, San Diego, CA, January 2005 S. Diehl & T.S. Statler, The X-ray Luminosity Functions of Point Sources in Elliptical Galaxies, Galaxies viewed with Chandra workshop, Cambridge, MA, July 2004 S. Diehl & T.S. Statler The X-ray Luminosity Function of Point Sources in Elliptical Galaxies Spring meeting of the Ohio Section of the American Physical Society (OSAPS) Athens, OH, April 2004 S. Diehl & T.S. Statler, The Importance of Rotational Support for the Hot Gas in Elliptical Galaxies, The Riddle of Cooling Flows in Galaxies and Clusters of Galaxies, Charlottesville, VA, June 2003
References Prof. Thomas S. Statler Director, Astrophysical Institute, Department of Physics & Astronomy, 335 Clippinger Laboratories 740-593-1722 tss@coma.phy.ohiou.edu Prof. Brian McNamara Associate Professor, Astrophysical Institute, Department of Physics & Astronomy, 339 Clippinger Laboratories 740-593-0063 mcnamara@helios.phy.ohiou.edu Prof. Joseph C. Shields Associate Professor, Astrophysical Institute, Department of Physics & Astronomy, 341 Clippinger Laboratories 740-593-0336 shields@helios.phy.ohiou.edu Prof. Markus Böttcher Assistant Professor, Astrophysical Institute, Department of Physics & Astronomy, 339 Clippinger Laboratories 740-593-1714 mboett@helios.phy.ohiou.edu Dr. Christopher Fryer Theoretical Astrophysics group (T-6) Los Alamos National Laboratories (LANL) Mailstop B227 Los Alamos, NM, 87545, U.S. 505-665-3394 fryer@lanl.gov