Browsing by Subject "Gravitation"

Sort by: Order: Results:

  • Capano, Collin D.; Nitz, Alexander H. (College Park, MD : American Physical Society, 2020)
    Gravitational waves provide a window to probe general relativity (GR) under extreme conditions. The recent observations of GW190412 and GW190814 are unique high-mass-ratio mergers that enable the observation of gravitational-wave ...
  • Zhu, Sylvia J.; Baryakhtar, Masha; Papa, Maria Alessandra; Tsuna, Daichi; Kawanaka, Norita; Eggenstein, Heinz-Bernd (College Park, MD : American Physical Society, 2020)
    Ultralight bosons can form large clouds around stellar-mass black holes via the superradiance instability. Through processes such as annihilation, these bosons can source continuous gravitational-wave signals with frequencies ...
  • Dreissigacker, Christoph; Prix, Reinhard (College Park, MD : American Physical Society, 2020)
    The sensitivity of wide-parameter-space searches for continuous gravitational waves is limited by computational cost. Recently it was shown that deep neural networks (DNNs) can perform all-sky searches directly on ...
  • Gong, Xuefei; Lau, Yun-Kau; Xu, Shengnian; Amaro-Seoane, Pau; Bai, Shan; Bian, Xing; Cao, Zhoujian; Chen, Gerui; Chen, Xian; Ding, Yanwei; Dong, Peng; Gao, Wei; Heinzel, Gerhard; Li, Ming; Li, Shuo; Liu, Fukun; Luo, Ziren; Shao, Mingxue; Spurzem, Rainer; Sun, Baosan; Tang, Wenlin; Wang, Yan; Xu, Peng; Yu, Pin; Yuan, Yefei; Zhang, Xiaomin; Zhou, Zebing (Bristol : Institute of Physics Publishing, 2015)
    The present work reports on a feasibility study commissioned by the Chinese Academy of Sciences of China to explore various possible mission options to detect gravitational waves in space alternative to that of the eLISA/LISA ...
  • Schäfer, Martin B.; Ohme, Frank; Nitz, Alexander H. (College Park, MD : American Physical Society, 2020)
    As two neutron stars merge, they emit gravitational waves that can potentially be detected by Earth-bound detectors. Matched-filtering-based algorithms have traditionally been used to extract quiet signals embedded in ...
  • Overmeyer, Ludger; Lazar, Sebastian; Lotz, Christoph (Hannover : Gottfried Wilhelm Leibniz Universität Hannover, 2018)
    Der Einstein-Elevator ist die weltweit erste Forschungseinrichtung für physikalische und produktionstechnische Experimente bei unterschiedlichen Gravitationsbedingungen von Schwerelosigkeit bis zur fünffachen Erdbeschleunigung ...
  • Schilling, Manuel; Schlippert, Dennis; Schubert, Christian; Wodey, Etienne; Meiners, Christian; Ertmer, Wolfgang; Rasel, Ernst Maria; Müller, Jürgen (Washington D.C. : American Geophysical Union, 2016-12-12)
    A large variety of scientific experiments as well as common applications require more and more precise knowledge of gravity g, its derived quantities, and their change in time. For several phenomena the effect on g can be ...
  • Armano, M.; Audley, H.; Auger, G.; Baird, J.; Binetruy, P.; Born, M.; Bortoluzzi, D.; Brandt, N.; Bursi, A.; Caleno, M.; Cavalleri, A.; Cesarini, A.; Cruise, M.; Cutler, C.; Danzmann, K.; Diepholz, I.; Dolesi, R.; Dunbar, N.; Ferraioli, L.; Ferroni, V.; Fitzsimons, E.; Freschi, M.; Gallegos, J.; Marirrodriga, C.G.; Gerndt, R.; Gesa, L.; Gibert, F.; Giardini, D.; Giusteri, R.; Grimani, C.; Harrison, I.; Heinzel, G.; Hewitson, M.; Hollington, D.; Hueller, M.; Huesler, J.; Inchauspé, H.; Jennrich, O.; Jetzer, P.; Johlander, B.; Karnesis, N.; Kaune, B.; Korsakova, N.; Killow, C.; Lloro, I.; Maarschalkerweerd, R.; Madden, S.; Maghami, P.; Mance, D.; Martín, V.; Martin-Porqueras, F.; Mateos, I.; McNamara, P.; Mendes, J.; Mendes, L.; Moroni, A.; Nofrarias, M.; Paczkowski, S.; Perreur-Lloyd, M.; Petiteau, A.; Pivato, P.; Plagnol, E.; Prat, P.; Ragnit, U.; Ramos-Castro, J.; Reiche, J.; Perez, J.A.R.; Robertson, D.; Rozemeijer, H.; Russano, G.; Sarra, P.; Schleicher, A.; Slutsky, J.; Sopuerta, C.F.; Sumner, T.; Texier, D.; Thorpe, J.; Trenkel, C.; Tu, H.B.; Vetrugno, D.; Vitale, S.; Wanner, G.; Ward, H.; Waschke, S.; Wass, P.; Wealthy, D.; Wen, S.; Weber, W.; Wittchen, A.; Zanoni, C.; Ziegler, T.; Zweifel, P. (Bristol : Institute of Physics Publishing, 2015)
    The LISA Pathfinder mission will demonstrate the technology of drag-free test masses for use as inertial references in future space-based gravitational wave detectors. To accomplish this, the Pathfinder spacecraft will ...
  • Abbott, B.P.; Abbott, R.; Abbott, T.D.; Acernese, F.; Ackley, K.; et al.; LIGO Scientific Collaboration; Virgo Collaboration (College Park, MD : American Physical Society, 2017)
    We describe the observation of GW170104, a gravitational-wave signal produced by the coalescence of a pair of stellar-mass black holes. The signal was measured on January 4, 2017 at 10 11:58.6 UTC by the twin advanced ...
  • Loriani, Sina; Abend, Sven; Gaaloul, Naceur; Meiners, Christian; Schubert, Christian; Tell, Dorothee; Wodey, Étienne; Ertmer, Wolfgang; Schlippert, Dennis; Rasel, Ernst M. (Washington : American Association for the Advancement of Science (A A A S), 2019)
    The phase of matter waves depends on proper time and is therefore susceptible to special-relativistic (kinematic) and gravitational (redshift) time dilation. Hence, it is conceivable that atom interferometers measure ...
  • Freier, C.; Hauth ,M.; Schkolnik, V.; Leykauf, B.; Schilling, Manuel; Wziontek, H.; Scherneck, H.-G.; Müller, J.; Peters, A. (Bristol : Institute of Physics Publishing, 2016)
    Changes of surface gravity on Earth are of great interest in geodesy, earth sciences and natural resource exploration. They are indicative of Earth system's mass redistributions and vertical surface motion, and are usually ...
  • Alexiou, Maria; Gheorghiu, Tamara; Stavrinos, Panayiotis C.; Vacaru, Olivia; Vacaru, Sergiu I. (Singapur : World Scientific Publishing Co. Pte. Ltd., 2018)
    We review the theory of geometric flows on nonholonomic manifolds and tangent bundles and self-similar configurations resulting in generalized Ricci solitons and Einstein-Finsler equations. There are provided new classes ...
  • Abbott, B.P.; Abbott, R.; Abbott, T.D.; Abernathy, M.R.; Acernese, F.; et al.; LIGO Scientific Collaboration; Virgo Collaboration (College Park, MD : American Physical Society, 2016)
    On September 14, 2015 at 09:50:45 UTC the two detectors of the Laser Interferometer Gravitational-Wave Observatory simultaneously observed a transient gravitational-wave signal. The signal sweeps upwards in frequency from ...
  • Gheorghiu, Tamara; Vacaru, Olivia; Vacaru, Sergiu I. (Singapur : World Scientific Publishing Co. Pte. Ltd., 2018)
    We find general parameterizations for generic off-diagonal spacetime metrics and matter sources in general relativity (GR) and two measure/bi-metric modified gravity theories, MGTs, when the field equations decouple with ...
  • Nielsen, Alex B. (Bristol : Institute of Physics Publishing, 2016)
    Black hole spin will have a large impact on searches for gravitational waves with advanced detectors. While only a few stellar mass black hole spins have been measured using X- ray techniques, gravitational wave detectors ...
  • Abbott, B.P.; Abbott, R.; Abbott, T.D.; Abernathy, M.R.; Acernese, F.; et al.; LIGO Scientific Collaboration; Virgo Collaboration (College Park, MD : American Physical Society, 2016)
    On September 14, 2015, the Laser Interferometer Gravitational-Wave Observatory (LIGO) detected a gravitational-wave transient (GW150914); we characterize the properties of the source and its parameters. The data around the ...
  • Flury, Jakob (Bristol : Institute of Physics Publishing, 2016)
    Quantum metrology enables new applications in geodesy, including relativistic geodesy. The recent progress in optical atomic clocks and in long-distance frequency transfer by optical fiber together pave the way for using ...
  • Loriani, Sina; Schubert, Christian; Schlippert, Dennis; Ertmer, Wolfgang; Pereira Dos Santos, Franck; Rasel, Ernst Maria; Gaaloul, Naceur; Wolf, Peter (College Park, MD : American Physical Society, 2020)
    A major challenge common to all Galilean drop tests of the universality of free fall (UFF) is the required control over the initial kinematics of the two test masses upon release due to coupling to gravity gradients and ...
  • Großardt, André (Hannover : Gottfried Wilhelm Leibniz Universität Hannover, 2013)
    [no abstract]
  • Yang, Yichao; Yamamoto, Kohei; Huarcaya, Victor; Vorndamme, Christoph; Penkert, Daniel; Barranco, Germán Fernández; Schwarze, Thomas S.; Mehmet, Moritz; Delgado, Juan Jose Esteban; Jia, Jianjun; Heinzel, Gerhard; Álvarez, Miguel Dovale (Basel : MDPI AG, 2020)
    Tracking moving masses in several degrees of freedom with high precision and large dynamic range is a central aspect in many current and future gravitational physics experiments. Laser interferometers have been established ...