Results 1 to 10 of about 2,871,358 (352)

Primordial black holes and their gravitational-wave signatures. [PDF]

Living Rev Relativ, 2023
In the recent years, primordial black holes (PBHs) have emerged as one of the most interesting and hotly debated topics in cosmology. Among other possibilities, PBHs could explain both some of the signals from binary black hole mergers observed in ...
Bagui E, Clesse S, De Luca V, Ezquiaga JM, Franciolini G, García-Bellido J, Joana C, Kumar Jain R, Kuroyanagi S, Musco I, Papanikolaou T, Raccanelli A, Renaux-Petel S, Riotto A, Ruiz Morales E, Scalisi M, Sergijenko O, Ünal C, Vennin V, Wands D, LISA Cosmology Working Group.   +20 more
europepmc   +5 more sources

Correlation between birefringence and absorption mapping in large-size Sapphire substrates for gravitational-wave interferometry [PDF]

Scientific Reports, 2023
In high-sensitive laser interferometers, such as the gravitational-wave detector KAGRA, ultra-high-quality mirrors are essential. In the case of KAGRA, where cavity mirrors are cooled down to 20 K, large-size Sapphire crystals are used as the substrate ...
Simon Zeidler, Marc Eisenmann, Marco Bazzan, Pengbo Li, Matteo Leonardi   +4 more
doaj   +2 more sources

Core Payload of the Space Gravitational Wave Observatory: Inertial Sensor and Its Critical Technologies [PDF]

Sensors
Since Einstein’s prediction regarding the existence of gravitational waves was directly verified by the ground-based detector Advanced LIGO, research on gravitational wave detection has garnered increasing attention.
Shaoxin Wang, Dongxu Liu, Xuan Zhan, Peng Dong, Jia Shen, Juan Wang, Ruihong Gao, Weichuan Guo, Peng Xu, Keqi Qi, Ziren Luo   +10 more
doaj   +2 more sources

Testing general relativity with gravitational-wave catalogs: The insidious nature of waveform systematics [PDF]

iScience, 2021
Summary: Gravitational-wave observations of binary black holes allow new tests of general relativity (GR) to be performed on strong, dynamical gravitational fields.
Christopher J. Moore, Eliot Finch, Riccardo Buscicchio, Davide Gerosa   +3 more
doaj   +2 more sources

Design method for the structure of a gravitational wave detection telescope with low TTL noise [PDF]

Scientific Reports
As a critical payload of the gravitational wave detection interferometry system, the tilt-to-length (TTL) noise has a significant influence on the detection accuracy of the interferometry system.
Sijun Fang, Wentong Fan, Rui Zhang, Jian Luo, Bohong Li, Hongwen Hai, Yehao Cao, Lei Fan, Yong Yan   +8 more
doaj   +2 more sources

The NANOGrav 15 yr Data Set: Evidence for a Gravitational-wave Background [PDF]

Astrophysical Journal Letters, 2023
We report multiple lines of evidence for a stochastic signal that is correlated among 67 pulsars from the 15 yr pulsar timing data set collected by the North American Nanohertz Observatory for Gravitational Waves.
G. Agazie, A. Anumarlapudi, A. Archibald, Z. Arzoumanian, P. Baker, B. Bécsy, L. Blecha, A. Brazier, P. Brook, S. Burke-Spolaor, R. Burnette, R. Case, M. Charisi, S. Chatterjee, K. Chatziioannou, B. Cheeseboro, Siyuan Chen, T. Cohen, J. Cordes, N. Cornish, F. Crawford, H. Cromartie, K. Crowter, C. Cutler, M. DeCesar, D. DeGan, P. Demorest, Heling Deng, T. Dolch, B. Drachler, J. Ellis, E. Ferrara, W. Fiore, E. Fonseca, G. Freedman, N. Garver-Daniels, P. Gentile, K. Gersbach, J. Glaser, D. Good, K. Gultekin, J. Hazboun, S. Hourihane, K. Islo, R. Jennings, A. Johnson, Megan L. Jones, A. Kaiser, D. Kaplan, L. Kelley, M. Kerr, J. Key, T. C. Klein, N. Laal, M. Lam, W. Lamb, T. Lazio, N. Lewandowska, T. Littenberg, Tianyu Liu, A. Lommen, D. Lorimer, Jing Luo, R. Lynch, Chung-Pei Ma, D. Madison, M. A. Mattson, A. McEwen, J. Mckee, M. Mclaughlin, N. McMann, B. W. Meyers, P. Meyers, C. Mingarelli, A. Mitridate, P. Natarajan, C. Ng, D. Nice, S. Ocker, K. Olum, T. Pennucci, B. Perera, P. Petrov, N. Pol, H. Radovan, S. Ransom, P. Ray, J. Romano, S. C. Sardesai, A. Schmiedekamp, C. Schmiedekamp, K. Schmitz, L. Schult, B. Shapiro-Albert, X. Siemens, J. Simon, M. Siwek, I. Stairs, D. Stinebring, K. Stovall, Jerry P. Sun, A. Susobhanan, J. Swiggum, Jacob M. Taylor, S. Taylor, J. Turner, C. Unal, M. Vallisneri, R. V. Haasteren, S. Vigeland, H. Wahl, Qiaohong Wang, C. Witt, O. Young   +113 more
semanticscholar   +1 more source

The second data release from the European Pulsar Timing Array. III. Search for gravitational wave signals [PDF]

Astronomy & Astrophysics, 2023
We present the results of the search for an isotropic stochastic gravitational wave background (GWB) at nanohertz frequencies using the second data release of the European Pulsar Timing Array (EPTA) for 25 millisecond pulsars and a combination with the ...
J. Antoniadis, P. Arumugam, S. Arumugam, S. Babak, M. Bagchi, A. B. Nielsen, C. Bassa, A. Bathula, A. Berthereau, M. Bonetti, E. Bortolas, P. Brook, M. Burgay, R. N. Caballero, A. Chalumeau, D. Champion, S. Chanlaridis, S. Chen, I. Cognard, S. Dandapat, D. Deb, S. Desai, G. Desvignes, N. Dhanda-Batra, C. Dwivedi, M. Falxa, R. Ferdman, A. Franchini, J. Gair, B. Goncharov, A. Gopakumar, E. Graikou, J. Grießmeier, L. Guillemot, Y. J. Guo, Y. Gupta, S. Hisano, H. Hu, F. Iraci, D. Izquierdo-Villalba, J. Jang, J. Jawor, G. Janssen, A. Jessner, B. C. Joshi, Fazal Kareem, R. Karuppusamy, E. Keane, M. Keith, D. Kharbanda, T. Kikunaga, N. Kolhe, M. Kramer, M. A. Krishnakumar, K. Lackeos, K. Lee, K. Liu, Y. Liu, A. Lyne, J. Mckee, Y. Maan, R. Main, M. Mickaliger, I. C. Niţu, K. Nobleson, A. K. Paladi, A. Parthasarathy, B. Perera, D. Perrodin, A. Petiteau, N. Porayko, A. Possenti, T. Prabu, H. Q. Leclere, P. Rana, A. Samajdar, S. Sanidas, A. Sesana, G. Shaifullah, J. Singha, L. Speri, R. Spiewak, A. Srivastava, B. Stappers, M. Surnis, S. Susarla, A. Susobhanan, K. Takahashi, P. Tarafdar, G. Theureau, C. Tiburzi, E. V. D. Wateren, A. Vecchio, V. V. Krishnan, J. Verbiest, J. Wang, L. Wang, Z. Wu   +97 more
semanticscholar   +1 more source

Search for an Isotropic Gravitational-wave Background with the Parkes Pulsar Timing Array [PDF]

Astrophysical Journal Letters, 2023
Pulsar timing arrays aim to detect nanohertz-frequency gravitational waves (GWs). A background of GWs modulates pulsar arrival times and manifests as a stochastic process, common to all pulsars, with a signature spatial correlation.
D. Reardon, A. Zic, R. Shannon, G. Hobbs, M. Bailes, V. Di Marco, A. Kapur, Axl F. Rogers, E. Thrane, Jacob Askew, N. Bhat, A. Cameron, M. Curyło, W. Coles, S. Dai, B. Goncharov, M. Kerr, Atharva Kulkarni, Y. Levin, M. Lower, R. Manchester, R. Mandow, M. Miles, R. Nathan, S. Osłowski, C. Russell, R. Spiewak, Songbo Zhang, Xingjiang Zhu   +28 more
semanticscholar   +1 more source

Searching for the Nano-Hertz Stochastic Gravitational Wave Background with the Chinese Pulsar Timing Array Data Release I [PDF]

Research in Astronomy and Astrophysics, 2023
Observing and timing a group of millisecond pulsars with high rotational stability enables the direct detection of gravitational waves (GWs). The GW signals can be identified from the spatial correlations encoded in the times-of-arrival of widely spaced ...
Heng Xu, Siyuan Chen, Yanjun Guo, Jinchen Jiang, Bojun Wang, Jiangwei Xu, Zihan Xue, R. Nicolas Caballero, Jian-ping Yuan, Yonghua Xu, Jingbo Wang, L. Hao, Jing Luo, Kejia Lee, Jinlin Han, P. Jiang, Zhiqiang Shen, Min Wang, Na Wang, Renxin Xu, X. Wu, R. Manchester, L. Qian, X. Guan, Menglin Huang, Chun Sun, Yan Zhu   +26 more
semanticscholar   +1 more source

The NANOGrav 15 yr Data Set: Constraints on Supermassive Black Hole Binaries from the Gravitational-wave Background [PDF]

Astrophysical Journal Letters, 2023
The NANOGrav 15 yr data set shows evidence for the presence of a low-frequency gravitational-wave background (GWB). While many physical processes can source such low-frequency gravitational waves, here we analyze the signal as coming from a population of
G. Agazie, A. Anumarlapudi, A. Archibald, P. Baker, B. B'ecsy, L. Blecha, Alexander Bonilla, A. Brazier, P. Brook, S. Burke-Spolaor, R. Burnette, R. Case, J. A. Casey-Clyde, M. Charisi, S. Chatterjee, K. Chatziioannou, B. Cheeseboro, Siyuan Chen, T. Cohen, J. Cordes, N. Cornish, F. Crawford, H. Cromartie, K. Crowter, C. Cutler, D. D’Orazio, M. DeCesar, D. DeGan, P. Demorest, Heling Deng, T. Dolch, B. Drachler, E. Ferrara, W. Fiore, E. Fonseca, G. Freedman, E. Gardiner, N. Garver-Daniels, P. Gentile, K. Gersbach, J. Glaser, D. Good, K. Gultekin, J. Hazboun, S. Hourihane, K. Islo, R. Jennings, A. Johnson, Megan L. Jones, A. Kaiser, D. Kaplan, L. Kelley, M. Kerr, J. Key, N. Laal, M. Lam, W. Lamb, T. Lazio, N. Lewandowska, T. Littenberg, Tianyu Liu, Jing Luo, R. Lynch, Chung-Pei Ma, D. Madison, A. McEwen, J. Mckee, M. Mclaughlin, N. McMann, B. W. Meyers, P. Meyers, C. Mingarelli, A. Mitridate, P. Natarajan, C. Ng, D. Nice, S. Ocker, K. Olum, T. Pennucci, B. Perera, P. Petrov, N. Pol, H. Radovan, S. Ransom, P. Ray, J. Romano, J. Runnoe, S. C. Sardesai, A. Schmiedekamp, C. Schmiedekamp, K. Schmitz, L. Schult, B. Shapiro-Albert, X. Siemens, J. Simon, M. Siwek, I. Stairs, D. Stinebring, K. Stovall, Jerry P. Sun, A. Susobhanan, J. Swiggum, Jacob M. Taylor, S. Taylor, J. Turner, C. Unal, M. Vallisneri, S. Vigeland, Jeremy M. Wachter, H. Wahl, Qiaohong Wang, C. Witt, David Wright, O. Young   +113 more
semanticscholar   +1 more source