Homepage of Enrico Gerlach

Main research interests

Earth rotation, numerical integration, chaos detection methods, exoplanets, nonlinear dynamical systems, astrometry of minor planets

Scientific career

• 1997-2001
  Study of geodesy at HTW Dresden

• 2001
  diploma thesis: "Die Linien und Geoglyphen in der Pampa von Nasca - Astronomische Untersuchungen zur Überprüfung der Kalendertheorie"

• 2001-2003
  executive engineer of the astro-geodetic field work at the border demarcation project between the kingdom of Saudi Arabia and the republic Yemen

• 2003-2008
  researcher for the DFG project "Chaos and resonances in the Edgeworth-Kuiper belt"

• 2008
  Graduation. Thesis: Stabilitätsuntersuchungen an Asteroidenbahnen in ausgewählten Bahnresonanzen des Edgeworth-Kuiper-Gürtels

• since october 2008
  scientific staff member at the Lohrmann observatory

teaching

• Basic numerical computations in C (programming excercise, bachelor level): 2004-2006
• Physics I & II for geodesy (excercises at bachelor level): 2011 - today
• Practical astronomical observations (excercises for astronomy teachers): 2012 - today
• Earth rotation (lectures and exercises, master level): 2013 - today
• Astronomical reference systems (lecture for bachelor): SS 2014
• scientific supervisor of various bachelor theses

Publications

43 Entries

2014

• Two planets around Kapteyn's star: A cold and a temperate super-Earth orbiting the nearest halo red dwarfAnglada-Escudé, G., Arriagada, P., Tuomi, M., Zechmeister, M., Jenkins, J. S., Ofir, A., Dreizler, S. & 17 others, Aug 2014, In: Monthly Notices of the Royal Astronomical Society: Letters (Beilagen). 443, 1, p. L89-L93Electronic (full-text) versionResearch output: Contribution to journal > Research article
• High order three part split symplectic integrators: Efficient techniques for the long time simulation of the disordered discrete nonlinear Schrödinger equationSkokos, C., Gerlach, E., Bodyfelt, J. D., Papamikos, G. & Eggl, S., 16 May 2014, In: Physics Letters, Section A: General, Atomic and Solid State Physics. 378, 26-27, p. 1809-1815, 7 p.Electronic (full-text) versionResearch output: Contribution to journal > Research article

2013

• A dynamically-packed planetary system around GJ 667C with three super-Earths in its habitable zoneAnglada-Escudé, G., Tuomi, M., Gerlach, E., Barnes, R., Heller, R., Jenkins, J. S., Wende, S. & 4 others, 2013, In: Astronomy and Astrophysics. 556, A126Electronic (full-text) versionResearch output: Contribution to journal > Research article
• High order three part split symplectic integrators: Application to the disordered discrete nonlinear Schröder equationSkokos, H. & Gerlach, E., 2013, arXiv-preprintResearch output: Contribution to book/conference proceedings/anthology/report > Chapter in book/anthology/report

2012

• Efficient integration of the variational equations of multi-dimensional Hamiltonian systems: Application to the Fermi-Pasta-Ulam latticeGerlach, E., Eggl, S. & Skokos, C., Sep 2012, In: International Journal of Bifurcation and Chaos in Applied Sciences and Engineering. 22, 9, 13 p., 1250216Electronic (full-text) versionResearch output: Contribution to journal > Research article
• A new numerical theory of Earth rotationGerlach, E., Klioner, S. & Soffel, M., 1 Aug 2012, In: IAU Joint Discussions (GA). 7, p. 45Electronic (full-text) versionResearch output: Contribution to journal > Research article
• Can GJ 876 host four planets in resonance?Gerlach, E. & Haghighipour, N., May 2012, In: Celestial Mechanics and Dynamical Astronomy. 113, 1, p. 35-47, 13 p.Electronic (full-text) versionResearch output: Contribution to journal > Research article
• Consistent Modeling of the Geodetic Precession in Earth RotationGerlach, E., Klioner, S. & Soffel, M., 2012, VII Hotine-Marussi Symposium on Mathematical Geodesy: Proceedings of the Symposium. p. 307-311, 5 p.Electronic (full-text) versionResearch output: Contribution to book/conference proceedings/anthology/report > Conference contribution
• Habitable-zone super-Earth candidate in a six-planet system around the K2.5V star HD40307Tuomi, M., Anglada-Escudé, G., Gerlach, E., Jones, H. R., Reiners, A., Rivera, E. J., Vogt, S. S. & 1 others, 2012, In: Astronomy and Astrophysics. 549, A48Electronic (full-text) versionResearch output: Contribution to journal > Research article

2011

• Comparing the efficiency of numerical techniques for the integration of variational equationsGerlach, E. & Skokos, C., Sep 2011, In: Discrete and continuous dynamical systems : DCDS Series A. 2011, Suppl, p. 475-484, 10 p.Electronic (full-text) versionResearch output: Contribution to journal > Conference article

This information is provided by the FIS.

Presentations

2014

• 15.04.; Lehrerfortbildung des Freistaates Sachsen, Max Planck Institute for the Physics of Complex Systems, Dresden, Germany; "Kosmische Kleinkörper in unserem Sonnensystem".

2013

• 19.06.; Methods of Chaos Detection and Predictability: Theory and Applications, Max Planck Institute for the Physics of Complex Systems, Dresden, Germany; "On the numerical integration of ariational equations".

2012

• 09.10.; Geodätische Woche, Hannover, Germany; "Eine neue numerische Theorie von Präzession und Nutation der Erde".
• 30.08.; IAU General Assembly - Comission 19, Beijing, China; "A new theory of precession and nutation for the Earth".
• 28.08.; IAU General Assembly - Joint Discussion 7, Beijing, China; "A new numerical theory of Earth rotation".
• 22.02.; Meeting of research group FOR 584, Frankfurt/M., Germany; "Statusreport P3: Die elastische Erde".

2011

• 24.02.; Meeting of research group FOR 584, Vienna, Austria; "Geodätische Präzession für Körper des Sonnensystems; Stand der Präzessions-/Nutationstheorie einer nicht-starren Erde".
• 24.03.: 8th Alexander von Humboldt Colloquium for Celestial Mechanic, Bad Hofgastein, Austria;"On the numerical integration of variational equations"

2010

• 13.01.; Geodätisches Doktorandenseminar, TU Dresden; "Eine relativistische Theorie der Präzession und Nutation einer starren Erde".
• 12.03.; Lohrmann seminar; "Different ways to approach the non-rigid Earth".
• 22.03.; Meeting of research group FOR 584, Berlin; "Parameterwahl für das relativistische Erdmodell".
• 04.05.; EGU General Assembly, Vienna; "A consistent relativistic theory of Earth rotation".
• 10.09.; Lohrmann seminar; "The numerical integration of variational equations".

2009

• 23.10.; Lohrmann seminar; "Modelling the rotational motion of a rigid Earth in a relativistic framework - An overview".
• 29.10.; Meeting of research group FOR 584, Munich; "Projekt P3 - Relativistische Theorie der Präzessions- und Nutationsbewegung einer starren Erde".

2008

• 17.01.; Astrodynamic seminar, University of Vienna; "Säkulare Dynamik von Exoplaneten und nahe Begegnungen".
• 11.06.; Geodätisches Doktorandenforum, TU Dresden; "Chaos und Resonanzen in der Himmelsmechanik".
• 24.10.; Verteidigung der Dissertation, TU Dresden; "Stabilitätsuntersuchungen an Asteroidenbahnen in ausgewählten Bahnresonanzen des Edgeworth-Kuiper-Gürtels".

2007

• 19.01.; Lohrmann seminar; "Numerical simulation of chaotic systems in celestial mechanics".
• 23.02.; Lohrmann seminar; "Symplectic integration methods - An overview".
• 26.10.; EXOPLANETS: Detection, Formation and Dynamics, IAU Symposium No. 249, Oct. 22-26, 2007, Suzhou, China; "Secular evolution of exoplanetary systems and close encounters".

Poster

2009

• Klioner, S., Soffel, M., Gerlach, E.; EGU General Assembly 2009, Vienna; "Consistent modelling of the geodetic precession in Earth rotation".
• Gerlach, E., Klioner, S., Soffel, M.; VII Hotine-Marussi Symposium, Rome; "Consistent modelling of the geodetic precession in Earth rotation".
• S. Klioner, E. Gerlach, M. Soffel; CELMEC V, Viterbo; "Consistent relativistic theory of Earth rotation".
• Gerlach, E., Skokos, H.; CELMEC V, Viterbo; "Some aspects of the numerical integration of variational equations".

Referee for

• Applied Numerical Mathematics
• Artificial Satellites, Journal of Planetary Geodesy
• Celestial Mechanics and Dynamical Astronomy
• Communications in Nonlinear Science and Numerical Simulation
• International Journal of Bifurcation and Chaos