Articles in Refereed Journals

Reports, Articles in Conference Proceedings, etc.

Habilitation

PhD-Thesis

Diploma-Thesis

• R. J. Geretshauser, F. Meru, R. Speith, W. Kley: The four-population model: a new classification scheme for pre-planetesimal collisions. Astron. & Astroph. 531, A166 - A170, 2011.
  Reprint: PDF (1.3 MB)

• R. J. Geretshauser, R. Speith, C. Güttler, M. Krause, J. Blum: Numerical simulations of highly porous dust aggregates in the low-velocity collision regime. Implementation and calibration of a smooth particle hydrodynamics code. Astron. & Astroph. 513, A58 - A76, 2010.
  Reprint: PDF (1.5 MB)

• S. Børve, R. Speith, J. Trulsen: Numerical Dissipation in RSPH Simulations of Astrophysical Flows with Application to Protoplanetary Disks. Astrophysical Journal 701, 1269 - 1282, 2009.
  Preprint: PDF (1.4 MB)

• C. Güttler, M. Krause, R. J. Geretshauser, R. Speith, J. Blum: The Physics of Protoplanetesimal Dust Agglomerates. IV. Towards a Dynamical Collision Model. Astrophysical Journal 701, 130 - 141, 2009.
  Preprint: PDF (3.0 MB)

• C. Schäfer, R. Speith, W. Kley: Collisions between equal sized ice grain agglomerates. Astron. & Astroph. 470, 733 - 739, 2007.
  Preprint: PDF (620 kB)

• O.M. Matthews, R. Speith, G.A. Wynn, R.G. West: Magnetically moderated outbursts of WZ Sagittae. Mon. Not. R. Astron. Soc. 375, 105 - 114, 2007.
  Preprint: PDF (430 kB)

• M. de Val-Borro, R.G. Edgar, P. Artymowicz, P. Ciecielag, P. Cresswell, G. D'Angelo, E.J. Delgato-Donate, G. Dirksen, S. Fromang, A. Gawryszczak, H. Klahr, W. Kley, W. Lyra, F. Masset, G. Mellema, R. Nelson, S.-J. Paardekooper, A. Peplinski, A. Pierens, T. Plewa, K. Rice, C. Schäfer, R. Speith: A comparative study of disc-planet interaction. Mon. Not. R. Astron. Soc. 370, 529 - 558, 2006.
  Preprint: PDF (4.2 MB)

• O.M. Matthews, R. Speith, M.R. Truss, G.A. Wynn: The steady state structure of accretion discs in central magnetic fields. Mon. Not. R. Astron. Soc. 356, 66 - 76, 2005.
  Preprint: PostScript (gzip) (210 kB. Unzipped: 1.2 MB)

• S. Rosswog, R. Speith, G.A. Wynn: Accretion dynamics in neutron star-black hole binaries Mon. Not. R. Astron. Soc. 351, 1121 - 1133, 2004.
  Preprint: PostScript (gzip) (620 kB. Unzipped: 1.6 MB)

• C. Schäfer, R. Speith, M. Hipp, W. Kley: Simulations of planet-disc interactions using Smoothed Particle Hydrodynamics. Astron. & Astroph. 418, 325 - 335, 2004.
  Preprint: PostScript (gzip) (220 kB. Unzipped: 880 kB)

• O.M. Matthews, R. Speith, G.A. Wynn: Outbursts of young stellar objects. Mon. Not. R. Astron. Soc. 347, 873 - 884, 2004.
  Preprint: PostScript (gzip) (160 kB. Unzipped: 1.6 MB)

• R. Speith, W. Kley: Stability of the viscously spreading ring. Astron. & Astroph. 399, 395 - 407, 2003.
  Reprint: PDF (1.8 MB)

• Stefan Kunze, Roland Speith, Frederic V. Hessman: Substantial stream-disc overflow found in three-dimensional SPH simulations of cataclysmic variables. Mon. Not. R. Astron. Soc. 322 499 - 514, 2001.
  Reprint: PDF (3.8 MB)

• R. Speith, H. Riffert: The viscous gas ring as an astrophysical test problem for a viscous SPH-code. Journal of Computational and Applied Mathematics 109, 231 - 242, 1999.
  Reprint: PDF (511 kB)

• S. Kunze, R. Speith, H. Riffert: Reproducing superhumps and gamma-shifts of SU UMa stars with SPH simulations. Mon. Not. R. Astron. Soc. 289, 889 - 897, 1997.
  Reprint: PostScript (gzip) (1.3 MB. Unzipped: 1.7 MB)

• R. Speith, H. Riffert, H. Ruder: The photon transfer function for accretion disks around a Kerr black hole. Computer Physics Communications 88, 109 - 120, 1995.
  Reprint: PDF (540 kB)

• S.E. Arena, R. Speith: Pore surface energy corrected P-alpha like models and the anomalous behaviour of porous materials. In: G.~Bertin, F.~De Luca, G.~Lodato, R.~Pozzoli, M.~Rom{\'e} (eds.): Plasmas in the Laboratory and the Universe: Interactions, Patterns, and Turbulence, AIP Conference Proceedings 1242, p. 294 - 299, 2010.
  Preprint: PDF (300 kB)

• C. Güttler, M. Krause, R. Geretshauser, R. Speith, J. Blum: Towards a Dynamical Collision Model of Highly Porous Dust Aggregates. In: M. Nakagawa and S. Luding (eds.): Powders & Grains 2009, Proceedings of the 6th International Conference on Micromechanics of Granular Media. p. 941 - 944, 2009.
  Preprint: PDF (570 kB)

• S. Børve, R. Speith, M. Omang, J. Trulsen: Challenges related to particle regularization in SPH. In: Crespo, Gómez-Gesteira, Souto-Iglesias, Delorme, Grassa (eds.): Proceedings of the Workshop SPHERIC - Smoothed Particle Hydrodynamics European Research Interest Community. Second International Workshop. p. 67 - 70, 2007.
  Preprint: PostScript (gzip) (700 kB. Unzipped: 3.4 MB)

• R. Speith: "Forschendes Lernen" in einem Versuch des Computational Physics Praktikums. In: K. Reiber (ed.): Forschendes Lernen als hochschuldidaktisches Prinzip - Grundlagen und Beispiele, Tübinger Beiträge zur Hochschuldidaktik, Band 3/1, Tübingen 2007, p. 39 - 44.
  Reprint: PDF (380 kB)

• R. Speith, C. Schäfer, R. Geretshauser, W. Kley: Simulations of Collisions Between Pre-Planetesimals. Electronic conference proceedings of From Dust to Planetesimals, Workshop at Rinbgerg Castle, 11 - 15 September 2006, Ringberg (http://www.mpia.de/homes/fdtp/talks/index.html).

• R. Speith: Modified SPH schemes for the simulation of planet-disc interaction. Electronic conference proceedings of Planet-Disc Connection, 17 - 21 July 2006, Cambridge UK (http://www.ast.cam.ac.uk/meetings/discs06/proceedings).

• S. Kunze, R. Speith: SPH Simulations of the 2:1 Resonance in Accretion Disks. In: J.M. Hameury, J.P. Lasota (eds.): The astrophysics of cataclysmic variables and related objects ASP Conf. Ser., Vol. 330, 389 - 390, 2005.
  Preprint: PostScript (gzip) (160 kB. Unzipped: 440 kB)

• O.M. Matthews, M.R. Truss, G.A. Wynn, R. Speith: Outbursts of WZ Sagittae. In: J.M. Hameury, J.P. Lasota (eds.): The astrophysics of cataclysmic variables and related objects ASP Conf. Ser., Vol. 330, 171 - 176, 2005.
  Preprint: PDF (340 kB)

• C. Schäfer, R. Speith, R. Günther, W. Kley: Impact Simulations with SPH. In: Astron. Nachr./AN 325, p. 84, Suppl. Issue 1, 2004. Abstract P10 of the Annual Scientific AG Meeting 2004.

• C. Schäfer, R. Speith, R. Günther, W. Kley: Simulations of Planet-Disc Interactions with SPH. In: Astron. Nachr./AN 325, p. 85, Suppl. Issue 1, 2004. Abstract P10 of the Annual Scientific AG Meeting 2004.

• R. Speith: The Capability of Smoothed Particle Hydrodynamics for the Simulation of Electromagnetic High Velocity Metal Forming. Technical Report for EADS / Dornier GmbH - DaimlerChrysler Research and Technology, 43 pages, March 2004.

• K. Schenker, G. Wynn, R. Speith: Thermal-timescale mass transfer and magnetic CVs. In: S. Vrielmann, M. Cropper (eds.): Magnetic Cataclysmic Variables, Proceedings of IAU Colloquium 190, ASP Conf. Ser., Vol. 315, 8 - 13, 2004.
  Reprint: PDF (430 kB)

• R. Speith, S. Kunze: Three-dimensional SPH simulations of stream-disc overflow in cataclysmic variables. In: B. T. Gänsicke, K. Beuermann, K. Reinsch (eds.): The Physics of Cataclysmic Variables and Related Objects, ASP Conference Proceedings, Vol. 261, Astronomical Society of the Pacific, 2002, p. 551 - 552.
  Preprint: PostScript (gzip) (340 kB. Unzipped: 1.2 MB)

• C. Schäfer, R. Speith: Simulations of Planet-Disk Interactions with SPH. In: AG Abstract Series Vol. 18, abstract P39, 2001. (Abstracts of Contributed Talks and Posters presented at the Annual Scientific Meeting of the Astronomische Gesellschaft at the Joint European and National Meeting JENAM 2001 of the European Astronomical Society and the Astronomische Gesellschaft at Munich, September 10 - 15, 2001.)

• E. Schnetter, S. Kunze, R. Speith: Fluid Jet Simulations using Smoothed Particle Hydrodynamics. In: E. Krause, W. Jäger (eds.): High Performance Computing in Science and Engineering 2000, Springer 2001, p. 99 - 113.
  Preprint: PostScript (gzip) (12 MB. Unzipped: 34 MB)

• R. Speith, E. Schnetter, S. Kunze, H. Riffert: Distributed Implementation of SPH for Simulations of Accretion Disks. In: R. Esser, P. Grassberger, J. Grotendorst, M. Lewerenz (eds.): Molecular Dynamics on Parallel Computers, World Scientific, 2000, p. 276 - 285. (Proceedings of the Workshop at the John von Neumann-Institut for Computing (NIC), Research Centre Jülich, 8 - 10 February 1999.)
  Preprint: PostScript (gzip) (530 kB. Unzipped: 2.6 MB)

• S. Pfalzner, R. Speith: Hierarchical Treecodes: Smoothed Particle Hydrodynamics Example: Dynamics of Accretion Discs including Self-Gravity. In: R. Esser, P. Grassberger, J. Grotendorst, M. Lewerenz (eds.): Molecular Dynamics on Parallel Computers, World Scientific, 2000, p. 276 - 285. (Proceedings of the Workshop at the John von Neumann-Institut for Computing (NIC), Research Centre Jülich, 8 - 10 February 1999.)
  Preprint: PostScript (gzip) (530 kB. Unzipped: 2.6 MB)

• S. Kunze, E. Schnetter, R. Speith: Development and Astrophysical Applications of a Parallel Smoothed Particle Hydrodynamics Code with MPI. In: E. Krause, W. Jäger (eds.): High Performance Computing in Science and Engineering '99, Springer 2000, p. 52 - 61.
  Preprint: PostScript (gzip) (1.2 MB. Unzipped: 6.5 MB)

• Stefan Kunze, Erik Schnetter, Roland Speith: Applications of the Smoothed Particle Hydrodynamics method: The Need for Supercomputing. In: D. Keyes, A. Ecer, J. Periaux, N. Satofuka, P. Fox (eds.): Parallel Computational Fluid Dynamics, Towards Teraflops, Optimization and Novel Formulations. Proceedings of PARCFD99, the Parallel CFD'99 Conference, Elsevier 2000, p. 289 - 295.
  Preprint: PostScript (gzip) (620 kB. Unzipped: 13 MB)

• Roland Speith, Stefan Kunze: 3D-SPH Simulations of Accretion Discs. New Astronomy Reviews 44, P23 - P24, 2000. In: Proceedings of Cataclysmic Variables, a 60th Birthday Symposium in Honour of Brian Warner, Oxford, 12 - 16 April 1999.
  Preprint: PostScript (gzip) (980 kB. Unzipped: 3.3 MB)

• S. Kunze, R. Speith: 3D Hydrodynamical Simulations of the Stream-Disk Interaction in CVs: The Conditions for the Occurrence of Disk Overflow. In: AG Abstract Series Vol. 15, abstract C10, 1999. (Abstracts of Contributed Talks and Posters presented at the Annual Scientific Meeting of the Astronomische Gesellschaft, in Göttingen, 20 - 25 September 1999.)

• S. Kunze, R. Speith: 3D-SPH Simulations Of Superhumps In AM CVn. In: AG Abstract Series Vol. 15, abstract P34, 1999. (Abstracts of Contributed Talks and Posters presented at the Annual Scientific Meeting of the Astronomische Gesellschaft, in Göttingen, 20 - 25 September 1999.)

• L. Ruoff, R. Speith: Computer Simulations of Dwarf-Nova Outbursts with SPH. In: AG Abstract Series Vol. 15, abstract P48, 1999. (Abstracts of Contributed Talks and Posters presented at the Annual Scientific Meeting of the Astronomische Gesellschaft, in Göttingen, 20 - 25 September 1999.)

• T. Bubeck, M. Hipp, S. Hüttemann, S. Kunze, M. Ritt, W. Rosenstiel, H. Ruder, R. Speith: SPH test simulations on a portable parallel environment. In: Werner Kluge (ed.): PII'99 - Physics and Computer Science, Proceedings of the Workshop Physik Informatik Informationstechnik, Heidelberg, March 15 - 16 1999, p. 139 - 155.

• Roland Speith, Harald Riffert, and Hanns Ruder: Numerical Fluid Dynamics in Astrophysics with Smoothed Particle Hydrodynamics. In: High Performance Scientific and Engineering Computing, H.-J. Bungartz, F. Durst, and Chr. Zenger (eds.), Lecture Notes in Computational Science and Engineering, Springer 1999, p. 417 - 430. (Proceedings of the International FORTWIHR-Conference, March 1998.)
  Preprint: PostScript (gzip) (1.8 MB. Unzipped: 7.9 MB)

• T. Bubeck, M. Hipp, S. Hüttemann, S. Kunze, M. Ritt, W. Rosenstiel, H. Ruder, R. Speith: Parallel SPH on Cray T3E and NEC SX-4 using DTS. In: E. Krause, W. Jäger (eds.): High Performance Computing in Science and Engineering '98, Springer 1999, p. 396 - 409.
  Preprint: PostScript (gzip) (1.6 MB. Unzipped: 4.4 MB)

• S. Kunze, R. Speith, H. Riffert: Simulations of the stream disk impact in CVs. In: AG Abstract Series Vol. 14, abstract D07, 1998. (Abstracts of Contributed Talks and Posters presented at the Annual Scientific Meeting of the Astronomische Gesellschaft at Heidelberg, September 14 - 19, 1998.)

• S. Siegler, R. Speith, H. Ruder: Smoothed Particle Hydrodynamics simulations of the stream-disk impact in Cataclysmic Variables. In: AG Abstract Series Vol. 13, p. 210, 1997. (Abstracts of Contributed Talks and Posters presented at the Annual Scientific Meeting of the Astronomische Gesellschaft at Innsbruck, September 22 - 27, 1997.)

• Jörn Wilms, Roland Speith, Christopher S. Reynolds: Broad Iron Lines in Active Galactic Nuclei: A possible test of the Kerr Metric? In: F.W. Hehl, C. Kiefer, R.J.K. Metzler (eds.): Black Holes: Theory and Observation, Lecture Notes in Physics, Berlin, Heidelberg, Springer 1998, p. 69 - 79. Proceedings of the 179. WE-Heraeus-Seminar Black Holes: Theory and Observation, Bad Honnef, August 1997.
  Preprint: PostScript (gzip) (60 kB. Unzipped: 210 kB)

• S. Kunze, R. Speith, N. Vogt, C. La Dous: Reproducing superhumps of SU UMa stars. In: AG Abstract Series Vol. 12, p. 37, 1996. (Abstracts of Contributed Talks and Posters presented at the Annual Scientific Meeting of the Astronomische Gesellschaft at Tübingen, September 16 - 21, 1996.)

• R. Speith, S. Hüttemann, H. Riffert, H. Herold, H. Ruder: Why supercomputing seems necessary for SPH simulations. In: AG Abstract Series Vol. 12, p. 110, 1996. (Abstracts of Contributed Talks and Posters presented at the Annual Scientific Meeting of the Astronomische Gesellschaft at Tübingen, September 16 - 21, 1996.)

• Roland Speith: Improvements of the numerical method Smoothed Particle Hydrodynamics. Habilitation, Eberhard-Karls-Universität Tübingen, 2007.
  Reprint: PDF (43 MB, 146 pages)

• Roland Speith: Untersuchung von Smoothed Particle Hydrodynamics anhand astrophysikalischer Beispiele. Dissertation, Eberhard-Karls-Universität Tübingen, 1998.
  Reprint: PostScript (gzip) (8.1 MB. Unzipped: 30 MB, 275 pages)

• Roland Speith: Rotverschiebung längs Photonenbahnen in der Nähe Aktiver Galaktischer Kerne. Diplomarbeit, Eberhard-Karls-Universität Tübingen, August 1993.
  Reprint: PostScript (gzip) (660 kB. Unzipped: 6.4 MB, 90 pages)