LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Back to search results
Advanced search

Search results

Result 1 - 1 of total 1

Search options

Book ; Online: Comparing recent PTA results on the nanohertz stochastic gravitational wave background

The International Pulsar Timing Array Collaboration / Agazie, G. / Antoniadis, J. / Anumarlapudi, A. / Archibald, A. M. / Arumugam, P. / Arumugam, S. / Arzoumanian, Z. / Askew, J. / Babak, S. / Bagchi, M. / Bailes, M. / Nielsen, A. -S. Bak / Baker, P. T. / Bassa, C. G. / Bathula, A. / Bécsy, B. / Berthereau, A. / Bhat, N. D. R. /
Blecha, L. / Bonetti, M. / Bortolas, E. / Brazier, A. / Brook, P. R. / Burgay, M. / Burke-Spolaor, S. / Burnette, R. / Caballero, R. N. / Cameron, A. / Case, R. / Chalumeau, A. / Champion, D. J. / Chanlaridis, S. / Charisi, M. / Chatterjee, S. / Chatziioannou, K. / Cheeseboro, B. D. / Chen, S. / Chen, Z. -C. / Cognard, I. / Cohen, T. / Coles, W. A. / Cordes, J. M. / Cornish, N. J. / Crawford, F. / Cromartie, H. T. / Crowter, K. / Curyło, M. / Cutler, C. J. / Dai, S. / Dandapat, S. / Deb, D. / DeCesar, M. E. / DeGan, D. / Demorest, P. B. / Deng, H. / Desai, S. / Desvignes, G. / Dey, L. / Dhanda-Batra, N. / Di Marco, V. / Dolch, T. / Drachler, B. / Dwivedi, C. / Ellis, J. A. / Falxa, M. / Feng, Y. / Ferdman, R. D. / Ferrara, E. C. / Fiore, W. / Fonseca, E. / Franchini, A. / Freedman, G. E. / Gair, J. R. / Garver-Daniels, N. / Gentile, P. A. / Gersbach, K. A. / Glaser, J. / Good, D. C. / Goncharov, B. / Gopakumar, A. / Graikou, E. / Grießmeier, J. -M. / Guillemot, L. / Gültekin, K. / Guo, Y. J. / Gupta, Y. / Grunthal, K. / Hazboun, J. S. / Hisano, S. / Hobbs, G. B. / Hourihane, S. / Hu, H. / Iraci, F. / Islo, K. / Izquierdo-Villalba, D. / Jang, J. / Jawor, J. / Janssen, G. H. / Jennings, R. J. / Jessner, A. / Johnson, A. D. / Jones, M. L. / Joshi, B. C. / Kaiser, A. R. / Kaplan, D. L. / Kapur, A. / Kareem, F. / Karuppusamy, R. / Keane, E. F. / Keith, M. J. / Kelley, L. Z. / Kerr, M. / Key, J. S. / Kharbanda, D. / Kikunaga, T. / Klein, T. C. / Kolhe, N. / Kramer, M. / Krishnakumar, M. A. / Kulkarni, A. / Laal, N. / Lackeos, K. / Lam, M. T. / Lamb, W. G. / Larsen, B. B. / Lazio, T. J. W. / Lee, K. J. / Levin, Y. / Lewandowska, N. / Littenberg, T. B. / Liu, K. / Liu, T. / Liu, Y. / Lommen, A. / Lorimer, D. R. / Lower, M. E. / Luo, J. / Luo, R. / Lynch, R. S. / Lyne, A. G. / Ma, C. -P. / Maan, Y. / Madison, D. R. / Main, R. A. / Manchester, R. N. / Mandow, R. / Mattson, M. A. / McEwen, A. / McKee, J. W. / McLaughlin, M. A. / McMann, N. / Meyers, B. W. / Meyers, P. M. / Mickaliger, M. B. / Miles, M. / Mingarelli, C. M. F. / Mitridate, A. / Natarajan, P. / Nathan, R. S. / Ng, C. / Nice, D. J. / Niţu, I. C. / Nobleson, K. / Ocker, S. K. / Olum, K. D. / Osłowski, S. / Paladi, A. K. / Parthasarathy, A. / Pennucci, T. T. / Perera, B. B. P. / Perrodin, D. / Petiteau, A. / Petrov, P. / Pol, N. S. / Porayko, N. K. / Possenti, A. / Prabu, T. / Leclere, H. Quelquejay / Radovan, H. A. / Rana, P. / Ransom, S. M. / Ray, P. S. / Reardon, D. J. / Rogers, A. F. / Romano, J. D. / Russell, C. J. / Samajdar, A. / Sanidas, S. A. / Sardesai, S. C. / Schmiedekamp, A. / Schmiedekamp, C. / Schmitz, K. / Schult, L. / Sesana, A. / Shaifullah, G. / Shannon, R. M. / Shapiro-Albert, B. J. / Siemens, X. / Simon, J. / Singha, J. / Siwek, M. S. / Speri, L. / Spiewak, R. / Srivastava, A. / Stairs, I. H. / Stappers, B. W. / Stinebring, D. R. / Stovall, K. / Sun, J. P. / Surnis, M. / Susarla, S. C. / Susobhanan, A. / Swiggum, J. K. / Takahashi, K. / Tarafdar, P. / Taylor, J. / Taylor, S. R. / Theureau, G. / Thrane, E. / Thyagarajan, N. / Tiburzi, C. / Toomey, L. / Turner, J. E. / Unal, C. / Vallisneri, M. / van der Wateren, E. / van Haasteren, R. / Vecchio, A. / Krishnan, V. Venkatraman / Verbiest, J. P. W. / Vigeland, S. J. / Wahl, H. M. / Wang, S. / Wang, Q. / Witt, C. A. / Wang, J. / Wang, L. / Wayt, K. E. / Wu, Z. / Young, O. / Zhang, L. / Zhang, S. / Zhu, X. -J. / Zic, A.

2023  

Abstract: The Australian, Chinese, European, Indian, and North American pulsar timing array (PTA) collaborations recently reported, at varying levels, evidence for the presence of a nanohertz gravitational wave background (GWB). Given that each PTA made different ... ...

Abstract The Australian, Chinese, European, Indian, and North American pulsar timing array (PTA) collaborations recently reported, at varying levels, evidence for the presence of a nanohertz gravitational wave background (GWB). Given that each PTA made different choices in modeling their data, we perform a comparison of the GWB and individual pulsar noise parameters across the results reported from the PTAs that constitute the International Pulsar Timing Array (IPTA). We show that despite making different modeling choices, there is no significant difference in the GWB parameters that are measured by the different PTAs, agreeing within $1\sigma$. The pulsar noise parameters are also consistent between different PTAs for the majority of the pulsars included in these analyses. We bridge the differences in modeling choices by adopting a standardized noise model for all pulsars and PTAs, finding that under this model there is a reduction in the tension in the pulsar noise parameters. As part of this reanalysis, we "extended" each PTA's data set by adding extra pulsars that were not timed by that PTA. Under these extensions, we find better constraints on the GWB amplitude and a higher signal-to-noise ratio for the Hellings and Downs correlations. These extensions serve as a prelude to the benefits offered by a full combination of data across all pulsars in the IPTA, i.e., the IPTA's Data Release 3, which will involve not just adding in additional pulsars, but also including data from all three PTAs where any given pulsar is timed by more than as single PTA.

Comment: 21 pages, 9 figures, submitted to ApJ
Keywords Astrophysics - High Energy Astrophysical Phenomena ; General Relativity and Quantum Cosmology
Subject code 551
Publishing date 2023-09-01
Publishing country us
Document type Book ; Online
Database BASE - Bielefeld Academic Search Engine (life sciences selection)

Full text online

More links

Kategorien

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

To top