Christoph Schäfer
Computational Physics, University of Tübingen

Research Interests
  • Computational Physics and High Performance Computing
  • Smooth(ed) Particle Hydrodynamics
  • Protoplanetary discs and embedded protoplanet evolution
  • Planetesimal and planetary embryo formation processes







Image: NASA/Goddard Space Flight Center/Arizona State University

Publications

either see the ads for a complete list (including proceedings) or below for publications in journals

submitted
  • Maindl, T.; Dvorak, R.; Speith, R.; Schäfer, C.: The role of material strength in collisions - Comparing solid body and hydrodynamic physics for simulating collisions of planetesimals with icy shells, arXiv link.


    published
  • N. Haghighipour, T.I. Maindl, C.M. Schäfer, O.J.Wandel: Triggering the Activation of Main-belt Comets: The Effect of Porosity, The Astrophysical Journal, 855:60, 2018, doi link, arXiv link.
  • C. Burger, T.I. Maindl, C.M.Schäfer: Transfer, loss and physical processing of water in hit-and-run collisions of planetary embryos, Celestial Mechanics and Dynamical Astronomy, Volume 130, Issue 1, article id. #2, 2018, journal link, arXiv link.
  • D. Bancelin, E. Pilat-Lohinger, T.I. Maindl, F. Ragossnig, C. Schäfer: The influence of orbital resonances on the water transport to objects in the circumprimary habitable zone of binary star systems, AJ 153 269, 2017, arXiv link, journal link.
  • Christoph M. Schäfer, Samuel Scherrer, Robert Buchwald, Thomas I. Maindl, Roland Speith, Wilhelm Kley: Numerical Simulations of Regolith Sampling Processes, Planetary and Space Science, 2017, journal link, arXiv link, doi link.
  • Haghighipour, N.; Maindl, T.; Schäfer, C.; Speith, R.; Dvorak, R.: Triggering Sublimation-Driven Activity of Main Belt Comets, The Astrophysical Journal, 830, Number 1, 2016. journal link, arXiv link.
  • Schäfer, C.; Riecker, S.; Maindl, T.; Speith, R.; Scherrer, S.; Kley, W.: A Smooth Particle Hydrodynamics Code to Model Collisions Between Solid, Self-Gravitating Objects, Astronomy & Astrophysics, 590, A19, 2016, doi link.
  • Dvorak, Rudolf; Maindl, Thomas I.; Burger, Christoph; Schäfer, Christoph; Speith, Roland: Planetary Systems and the Formation of Habitable Planets, Nonlinear Phenomena in Complex Systems, Volume 18, Number 3, 2015, pp. 310-325, arXiv link, ads link.
  • D. Bancelin, E. Pilat-Lohinger, S. Eggl, T.I. Maindl, C. Schäfer, R. Speith, R. Dvorak: Asteroid flux towards circumprimary habitable zones in binary star systems: I. Statistical Overview, Astronomy & Astrophysics, 581, A46, 2015. arXiv link, doi link.
  • T. I. Maindl, R. Dvorak, H. Lammer, M. Güdel, C. Schäfer, R. Speith, P. Odert, N. V. Erkaev, K. G. Kislyakova, E. Pilat-Lohinger: Impact inducted surface heating by planetesimals on early Mars, Astronomy & Astrophysics, 574, A22, 2015. arXiv link.
  • Maindl, T.; Schäfer, C; Speith, R.; Süli, Aron; Forgacs-Dajka, Emese; Dvorak, Rudolf: SPH-based simulation of multi-material asteroid collisions, AN, 2013, (link).
  • Meru, Farzana; Geretshauser, Ralf J.; Schaefer, Christoph; Speith, Roland; Kley, Wilhelm, Growth and fragmentation of centimetre-sized dust aggregates: the dependence on aggregate size and porosity, MNRAS, 2013 (link).
  • C. Schäfer, R. Speith, and W. Kley, Collisions between equal-sized ice grain agglomerates, A&A 470, 733 (2007) (ads-link).
  • M. de Val-Borro, R. G. Edgar, P. Artymowicz, P. Cicielag, P. Cresswell, G. D'Angelo, E. J. Delgado-Donate, G. Dirksen, S. Fromang, A. Gawryszczak, H. Klahr, W. Kley, W. Lyra, F. Masset, G. Mellema, R. P. Nelson, S.-J. Paardekooper, A. Peplinski, A. Pierens, T. Plewa, K. Rice, C. Schäfer, R. Speith, A comparative study of disc-planet interaction, MNRAS 370 (2), 529 (2006) (ads-link).
  • M. Hipp, S. Pinkenburg, S. Holtwick, S. Kunze, C. Schäfer, W. Rosenstiel, and H. Ruder,
    Libraries and Methods for Parallel Particle Simulations in E. Krause, W. Jäger, M. Resch (Eds.) High Performance Computing in Science and Engineering '04.
  • R. Günther, C. Schäfer, and W. Kley, Evolution of irradiated circumbinary disks, A&A 423, 559 (2004) (ads-link).
  • C. Schäfer, R. Speith, M. Hipp and W. Kley,
    Simulations of planet-disc interactions using Smoothed Particle Hydrodynamics, A&A 418, 325 (2004) (ads-link).
  • S. Ganzenmüller, M. Hipp, S. Kunze, S. Pinkenburg, M. Ritt, W. Rosenstiel, H. Ruder, and C. Schäfer,
    Efficient and Object-Oriented Libraries for Particle Simulations in E. Krause, W. Jäger, M. Resch (Eds.) High Performance Computing in Science and Engineering '03.


    PhD Thesis
  • Application of Smooth Particle Hydrodynamics to selected Aspects of Planet Formation, Eberhard-Karls-Universität Tübingen 2005.
  • Codes and little tools

    miluph: SPH code for the simulation of fluids and solid bodies.
    miluphcuda: The CUDA port of miluph. For faster computation :-)
    pycuda script to generate SPH point clouds from STL geometry files: generate_sph_from_stl.py.

    Numerical Particle Methods Workgroup

    The workgroup on numerical particle methods is part of Prof. Kley's department of Computational Physics. Our research is focussed on meshfree particle methods such as Smooth Particle Hydrodynamics, Molecular Dynamics and Tree algorithms and their application on astrophysical processes.

    Current members of the workgroup on numerical particle methods:
    Oliver Wandel, PhD student
    Marius Morlock, Bachelor student
    Christoph Burger, visiting PhD student


    Collaborators : Dr. Thomas Maindl, Prof. Dr. Kees Dullemond, Christoph Burger, Prof. Dr. Nader Haghighipour, Dr. Daniel Harsono, Prof. Dr. Rudolf Dvorak, Birgit Loibnegger, Dr. Kai Wünnemann, Dr. Elena Martellato, Dr. Sergey Buruchenko, Dr. Aron Suli.


    Former head of the group: PD Dr. Roland Speith, Assistant Professor
    Former members: Dr. Stefan Kunze, Dr. Matthias Kunle, Dr. Ralf Geretshauser, Daria Adis, Dr. Ferzana Meru, Dr. Serena Arena, Dr. Kevin Schaal, Sven Riecker, Samuel Scherrer, Franziska Schmidt, Janka Werner.

    Teaching Summer term 2018

    Practical Course Advanced Astronomy

    Exercises for the lecture Computational Astrophysics (Prof. Kley's lecture)

    Teaching Winter term 2017

    Theoretical Astrophysics, Prof. Kley: Exercises for the lecture: Friday, 1230 - 2pm, C05H05. The exercise sheets are online on ILIAS.

    Computational Physics Practical Course

    Practical Course Advanced Astronomy

    Group seminar Numerical Particle Methods, Wednesday, 11-noon, C10A11.

    Teaching Summer term 2017

    CPT Group Seminar (internal link)

    Practical Course Advanced Astronomy

    Teaching Winter term 2016/17

    Theoretical Astrophysics, Prof. Kley: Exercises for the lecture: Friday, 1230 - 2pm, C05H05. The exercise sheets are online on ILIAS.

    Computational Physics Practical Course

    Practical Course Advanced Astronomy

    New Master of Science Program in Tübingen: Master Astro and Particle Physics. See the main webpage for more information about the modules and how to apply. Come to Tübingen!

    About Me

    You can find my CV on the following social networks
    Research Gate
    LinkedIn
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    Contact

    Institut für Astronomie und Astrophysik
    Abteilung Computational Physics
    Dr. Christoph M. Schäfer
    Universität Tübingen
    Auf der Morgenstelle 10
    72076 Tübingen
    Germany
    room: C10 A08
    phone: +49 7071 29 76359
    email: ch dot schaefer at uni dash tuebingen dot de
    private email: cm dot schaefer at gmail dot com

    YouTube Channel of CPT.