Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Heiner Denker"'
Publikováno v:
Journal of Geodynamics. 125:32-47
Radial basis functions (RBFs) have been used widely for regional gravity field modeling. By using the RBFs with the point mass kernel, the RBF-based technique becomes the point mass method. The model setup of the point mass RBFs, consisting of the se
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::30a40130129f3abe65c3c5f79b2a3f58
https://doi.org/10.1016/j.jog.2019.01.001
https://doi.org/10.1016/j.jog.2019.01.001
Publikováno v:
Surveys in Geophysics. 42:1227-1228
The article: “Gravity Field Modeling Using Tesseroids with Variable Density in the Vertical Direction”, written by Miao Lin, Heiner Denker and Jürgen Müller, was originally published electronically on the publisher’s internet portal on 26 Mar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3fbe447a32ce103541ba00da50ae2fbc
https://doi.org/10.1007/s10712-021-09654-4
https://doi.org/10.1007/s10712-021-09654-4
Autor:
Heiner Denker, Miao Lin
Publikováno v:
Journal of Geodesy. 93:723-747
The accurate computation of gravitational effects from topographic and atmospheric masses is one of the core issues in gravity field modeling. Using gravity forward modeling based on Newton’s integral, mass distributions are generally decomposed in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3157e22c5a834ec73c34ae1707a1ad8
https://doi.org/10.1007/s00190-018-1193-4
https://doi.org/10.1007/s00190-018-1193-4
Autor:
Pacôme Delva, Christian Voigt, Peter Wolf, Gérard Petit, Stefan Weyers, Ludger Timmen, Ekkehard Peik, Heiner Denker, Helen S. Margolis
Publikováno v:
Journal of Geodesy. 92:487-516
The frequency stability and uncertainty of the latest generation of optical atomic clocks is now approaching the one part in $$10^{18}$$ level. Comparisons between earthbound clocks at rest must account for the relativistic redshift of the clock freq
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f9f08f4fd286eb8a322e244e8119ed31
https://doi.org/10.1007/s00190-017-1075-1
https://doi.org/10.1007/s00190-017-1075-1
Publikováno v:
Fundamental Theories of Physics ISBN: 9783030114992
In section 2, we introduce fundamental concepts of GR concerning the measurement of time, relativistic reference systems and we review the recent literature of chronometric geodesy. In section 3 we introduce the theory of frequency standard compariso
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f5926ee961d5221256e9b5a82894393d
https://doi.org/10.1007/978-3-030-11500-5_2
https://doi.org/10.1007/978-3-030-11500-5_2
Autor:
Helen S. Margolis, Heiner Denker, Christian Voigt, Ludger Timmen, Jacopo Grotti, Silvio Koller, Stefan Vogt, Sebastian Häfner, Uwe Sterr, Christian Lisdat, Antoine Rolland, Fred N. Baynes, Michel Zampaolo, Pierre Thoumany, Marco Pizzocaro, Benjamin Rauf, Filippo Bregolin, Anna Tampellini, Piero Barbieri, Massimo Zucco, Giovanni A. Costanzo, Cecilia Clivati, Filippo Levi, Davide Calonico
Publikováno v:
Proceedings
We discuss the relation between atomic clocks and gravity from two perspectives: gravity potential measurements for optical clock comparisons and contributions to international timescales and, conversely, the measurement of gravity potential differen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6b85b25172dc9deff30c1ce9e4bdefcf
https://doi.org/10.1364/cleo_si.2019.sm1f.3
https://doi.org/10.1364/cleo_si.2019.sm1f.3
Autor:
Ludger Timmen, Sebastian Häfner, Fred N. Baynes, Christian Lisdat, Christian Voigt, Massimo Zucco, Stefan Vogt, Heiner Denker, Uwe Sterr, Jacopo Grotti, Marco Pizzocaro, Filippo Levi, Helen S. Margolis, Benjamin Rauf, Giovanni Antonio Costanzo, Michel Zampaolo, Davide Calonico, Antoine Rolland, Anna Tampellini, Filippo Bregolin, Piero Barbieri, Cecilia Clivati, Silvio Koller, Pierre Thoumany
Publikováno v:
Nature Physics
Nature Physics, 2018, 14 (5), pp.437-441. ⟨10.1038/s41567-017-0042-3⟩
Nature Physics, Nature Publishing Group, 2018, 14 (5), pp.437-441. ⟨10.1038/s41567-017-0042-3⟩
Nature Physics, 2018, 14 (5), pp.437-441. ⟨10.1038/s41567-017-0042-3⟩
Nature Physics, Nature Publishing Group, 2018, 14 (5), pp.437-441. ⟨10.1038/s41567-017-0042-3⟩
The advent of novel measurement instrumentation can lead to paradigm shifts in scientific research. Optical atomic clocks, due to their unprecedented stability and uncertainty, are already being used to test physical theories and herald a revision of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2c13991f1e7cf6afea075d854e169e3c
http://gfzpublic.gfz-potsdam.de/pubman/item/escidoc:2999911
http://gfzpublic.gfz-potsdam.de/pubman/item/escidoc:2999911
Autor:
Heiner Denker, M. Lours, Sébastien Bize, Sebastian Koke, Gesine Grosche, Y. Le Coq, Anne Amy-Klein, Daniele Nicolodi, Christian Chardonnet, Burghard Lipphardt, Giorgio Santarelli, J. Guena, Paul-Eric Pottie, S. M. F. Raupach, M. Abgrall, Peter Rosenbusch, Nicolas Quintin, Christian Grebing, Stefan Weyers, F. Meynadier, R. Le Targat, Fabrice Wiotte, A. Kuhl, Nicola Chiodo, Emilie Camisard, Olivier Lopez, Vladislav Gerginov, Fabio Stefani
Publikováno v:
Metrologia
Metrologia, 2017, ⟨10.1088/1681-7575/aa65fe⟩
Metrologia 54 (2017), Nr. 3
Metrologia, IOP Publishing, 2017, ⟨10.1088/1681-7575/aa65fe⟩
Metrologia, 2017, ⟨10.1088/1681-7575/aa65fe⟩
Metrologia 54 (2017), Nr. 3
Metrologia, IOP Publishing, 2017, ⟨10.1088/1681-7575/aa65fe⟩
We report on the first comparison of distant caesium fountain primary frequency standards (PFSs) via an optical fiber link. The 1415 km long optical link connects two PFSs at LNE-SYRTE (Laboratoire National de m\'{e}trologie et d'Essais - SYst\`{e}me
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e9626114e75de6dbc0f12bbd0b4eccdf
http://hdl.handle.net/20.500.12278/121111
http://hdl.handle.net/20.500.12278/121111
Publikováno v:
Studia Geophysica et Geodaetica. 58:207-226
A two-step free-positioned point mass method is used for regional gravity field modeling together with the remove-compute-restore (RCR) technique. The Quasi-Newton algorithm (L-BFGS-B) is implemented to solve the nonlinear problem with bound constrai
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2c2c84882b112bb54f0f70ee3bcc8c7c
https://doi.org/10.1007/s11200-013-1145-7
https://doi.org/10.1007/s11200-013-1145-7
Autor:
S. Bilicki, A. Kuhl, Nicola Chiodo, Harald Schnatz, S. Dörscher, Emilie Camisard, C. Chardonnet, Nicolas Quintin, A. Al-Masoudi, Heiner Denker, A. Koczwara, Paul-Eric Pottie, M. Abgrall, E. Bookjans, Daniele Nicolodi, C. Shi, Uwe Sterr, R. Le Targat, Jérôme Lodewyck, Christian Grebing, Sebastian Koke, Giorgio Santarelli, Olivier Lopez, Thomas Legero, Jean-Luc Robyr, Gesine Grosche, Anne Amy-Klein, Y. Le Coq, Fabrice Wiotte, Fabio Stefani, S. M. F. Raupach, M. Lours, Christian Lisdat, Sebastian Häfner, F. Meynadier
Publikováno v:
Nature Communications
Nature Communications, Nature Publishing Group, 2016, 7, ⟨10.1038/ncomms12443⟩
Nature Communications 7 (2016)
Nature Communications, 2016, 7, ⟨10.1038/ncomms12443⟩
Nature Communications, Vol 7, Iss 1, Pp 1-7 (2016)
Nature Communications, Nature Publishing Group, 2016, 7, ⟨10.1038/ncomms12443⟩
Nature Communications 7 (2016)
Nature Communications, 2016, 7, ⟨10.1038/ncomms12443⟩
Nature Communications, Vol 7, Iss 1, Pp 1-7 (2016)
Leveraging the unrivaled performance of optical clocks in applications in fundamental physics beyond the standard model, in geo-sciences, and in astronomy requires comparing the frequency of distant optical clocks truthfully. Meeting this requirement
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ac12acb128477e03eb9a5395ae189e30
http://hdl.handle.net/11568/877742
http://hdl.handle.net/11568/877742