M. Sc. Dennis Philipp

ZARM, University of Bremen
Am Fallturm
28359 Bremen
Germany

phone:
+49 421 218 - 57950

email:
dennis.philipp(at)zarm.uni-bremen.de

Research Interests

In my PhD Thesis, supervised by Prof. Dr. Claus Laemmerzahl, I am working on theoretical aspects of relativistic geodesy and gravimetry. I am concerned with the fundamental theoretical description of basic geodetic quantities such as the geoid and other reference surfaces. We develop a general relativistic definition of all notions and measurement procedures. On a curved spacetime geometry around the Earth, we investigate in particular geodesic deviation,  relativistic effects on orbits, clocks, redshifts, signal propagation and satellite constellations as well as tests of Special and General Relativity.

Furthermore, I am interested in astrophysical applications of geodetic concepts as well as fundamental fields in curved spacetime and phenomena such as wave propagation, quasi-normal modes and black holes.

Scientific Career 

  • 2012 B.Sc. in Physics at University of Bremen
  • 09/2014 M.Sc. in Physics at University of Oldenburg, with PD Dr. Volker Perlick, "On wave propagation in Schwarzschild spacetime"
  • since 10/2014: PhD Student in DFG Sonderforschungsbereich (SFB) 1128 "Relativistic Geodesy and Gravimetry with Quantum Sensors" (geo-Q)

Memberships 

  • Deutsche Physikalische Gesellschaft (DPG) since 2013
  • Associated member of the research training group (RTG) "Models of Gravity" since 2014
  • Full Member Sonderforschungsbereich (SFB 1128) geo-Q 

Invited Talks and Seminars 

  • "On wave propagation in the Schwarzschild spacetime", UAM, Mexico City, Mexico, 02/2015
  • "Relativistic geodesy and satellite orbit deviations", University of Aveiro, Portugal, 06/2016
  • "The relativistic geoid", Nikhef Insitute, Amsterdam, 04/2017
  • "Theoretical aspects of relativistic geodesy", DPG spring meeting Wuerzburg 03/2018

Conference Contributions (talks & posters)

  • "Photon accumulation in the vicinity of static black holes" Spring Conference of Deutsche Physikalische Gesellschaft, Jena, Germany, 25 February - 1 March 2013
  • "Photon accumulation in the vicinity of static black holes" 3rd GIF workshop on 'Exploration of Electrodynamics', Bremen, Germany, 17 - 20 June 2013
  • "On propagation of electromagnetic waves in Schwarzschild spacetime", 558. WE-Heraeus-Seminar, 31 March - 04 April 2014
  • "On wave propagation in Schwarzschild spacetime" VII Black Hole Workshop, Aveiro, Portugal, 18-19 December 2014
  • "On wave propagation in Schwarzschild spacetime" Spring Conference of Deutsche Physikalische Gesellschaft, Berlin, Germany, 15 - 20 March 2015
  • "Relativistic Orbit Modeling", Satellite Gravimetry Meeting, AEI Hannover, Germany, 24 March 2015
  • "On geodesic deviation in Schwarzschild spacetime" Session 'Relativistic Metrology' at Metrology for Aerospace Conference, Benevento, Italy, 4 -5 June 2015
  • "On geodesic deviation in static spherically symmetric situations" 14th Marcel Grossmann Meeting, Rome, Italy, 12 - 18 July 2015
  • "Analytic solutions of wave equations in Schwarzschild spacetime", Sandoval Vallarta Caribbean Meeting, UNAM Mexico City, Mexico, 29 November - 04 December 2015
  • "On relativistic geodesy and orbit deviations", DPG Spring Conference, Hamburg, Germany, 29 February - 04 March 2016
  • "On the applicability of the geodesic deviation equation in General Relativity", 609. WE Heraeus Seminar on "Relativistic Geodesy - Foundations and Application", Bad Honnef, Germany, 13-18 March 2016
  • "On the applicability of the geodesic deviation equation in General Relativity", GR21 conference, Columbia University, New York, USA, 10-15 July 2016
  • "On exact solutions of wave equations in BH spacetimes", VI Leopoldo Garcia-Colin Mexican meeting, Mexico City, 2016
  • "On the relativistic geoid", Central European Relativity Seminar, Bremen, Germany, 2017
  • "The relativistic geoid: definition in terms of isochronometric surfaces", DPG Spring meeting, Bremen, Germany, 2017
  • "Foliation and visualization of black hole spacetimes", 641 Heraeus Seminar, Bad Honnef, 2017
  • "The relativistic geoid: redshift and acceleration potential", EGU Meeting, Wien 2017
  • "The relativistic geoid", Relativistic Metrology in Metrology for Aerospace conference, Padua, Italy 2017
  • "The relativistic geoid", Fundamental Physics in Space, Bremen, 2017
  • "From relativistic geodesy to black holes", X Black Hole Workshop, Aveiro, Portugal 2017
  • "Relativistic geodesy: the geoid and leveling", DPG Spring meeting Wuerzburg 2018

Research stays

  • UAM, Mexico City, Mexico, 02/2015
  • Nikhef Institute, Amsterdam, 04/2017

Publications

  • D. Philipp, F. Woeske, L. Biskupek, E. Hackmann, E. Mai, M. List, C. Lämmerzahl, B. Rievers, "Modeling approaches for precise relativistic orbits: Analytical, Lie-series, and pN approximation", to appear in Advances in Space Research (2018)
  • D. Philipp, D. Puetzfeld, C. Lämmerzahl, "On the applicability of the geodesic deviation equation in General Relativity", to appear in Proceedings of the WE-Heraeus-Seminar "Relativistic Geodesy: Foundations and Applications" (2018)
  • D. Philipp, V. Perlick, D. Puetzfeld, E. Hackmann, C. Lämmerzahl: "Definition of the relativistic geoid in terms of isochronometric surfaces", Phys. Rev. D. 95, 104037 (2017), https://doi.org/10.1103/PhysRevD.95.104037
  • D. Philipp, V. Perlick, D. Puetzfeld, E. Hackmann, C. Lämmerzahl: "The relativistic geoid", 2017 IEEE International Workshop on Metrology for AeroSpace, 10.1109/MetroAeroSpace.2017.7999549 (2017)
  • D. Phillipp and D. Pützfeld, "On geodesic deviation in static spherically symmetric situations", The Fourteenth Marcel Grossmann Meeting. December 2017, 3731-3736, https://doi.org/10.1142/9789813226609_0489
  • D. Philipp, V. Perlick, C. Laemmerzahl, K. Deshpande: "On geodesic deviation in Schwarzschild spacetime" Metrology for Aerospace (MetroAeroSpace), 2015 IEEE, 198 (2015), 10.1109/MetroAeroSpace.2015.7180653
  • D. Philipp, V. Perlick, "Schwarzschild radial perturbations in Eddington-Finkelstein and Painlevé-Gullstrand coordinates" Int. J. Modern Phys. D 24, 1542006 (2015) http://dx.doi.org/10.1142/S0218271815420067

Contact

Dr. rer. nat. Eva Hackmann

Phone: +49 421 218-57862

Email: eva.hackmann

Privatdozent Dr. rer. nat. Volker Perlick

Phone: +49 421 218-57933

Email: volker.perlick

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