Zobrazeno 1 - 10
of 187
pro vyhledávání: '"William A. Coles"'
Autor:
Daniel J. Reardon, Andrew Zic, Ryan M. Shannon, George B. Hobbs, Matthew Bailes, Valentina Di Marco, Agastya Kapur, Axl F. Rogers, Eric Thrane, Jacob Askew, N. D. Ramesh Bhat, Andrew Cameron, Małgorzata Curyło, William A. Coles, Shi Dai, Boris Goncharov, Matthew Kerr, Atharva Kulkarni, Yuri Levin, Marcus E. Lower, Richard N. Manchester, Rami Mandow, Matthew T. Miles, Rowina S. Nathan, Stefan Osłowski, Christopher J. Russell, Renée Spiewak, Songbo Zhang, Xing-Jiang Zhu
Publikováno v:
The Astrophysical Journal Letters, Vol 951, Iss 1, p L6 (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. Here we describe
Externí odkaz:
https://doaj.org/article/f6922523384a4a16bf92c58b79ccf879
Autor:
Ziwei Wu, William A Coles, Joris P W Verbiest, Krishnakumar Moochickal Ambalappat, Caterina Tiburzi, Jean-Mathias Grießmeier, Robert A Main, Yulan Liu, Michael Kramer, Olaf Wucknitz, Nataliya Porayko, Stefan Osłowski, Ann-Sofie Bak Nielsen, Julian Y Donner, Matthias Hoeft, Marcus Brüggen, Christian Vocks, Ralf-Jürgen Dettmar, Gilles Theureau, Maciej Serylak, Vladislav Kondratiev, James W McKee, Golam M Shaifullah, Ihor P Kravtsov, Vyacheslav V Zakharenko, Oleg Ulyanov, Olexandr O Konovalenko, Philippe Zarka, Baptiste Cecconi, Léon V E Koopmans, Stéphane Corbel
Publikováno v:
Mon.Not.Roy.Astron.Soc.
Mon.Not.Roy.Astron.Soc., 2023, 520 (4), pp.5536-5543. ⟨10.1093/mnras/stad429⟩
Mon.Not.Roy.Astron.Soc., 2023, 520 (4), pp.5536-5543. ⟨10.1093/mnras/stad429⟩
Interstellar scattering (ISS) of radio pulsar emission can be used as a probe of the ionised interstellar medium (IISM) and causes corruptions in pulsar timing experiments. Two types of ISS phenomena (intensity scintillation and pulse broadening) are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::83704b5ff24d4703ff540ef1e7746c8f
https://doi.org/10.1093/mnras/stad429
https://doi.org/10.1093/mnras/stad429
Autor:
Daniel J Reardon, William A Coles
Density fluctuations in the ionised interstellar medium have a profound effect on radio pulsar observations, through angular scattering, intensity scintillations, and small changes in time delays from dispersion. Here we show that it is possible to r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::23a03706d05feae9f328009a6534783b
Autor:
Samantha B L Low, Kathryn Harrison, Kapil Gargh, Karl Johnson, Penny J. C. Davis, William J Coles, Eslam Al-Abadi
Publikováno v:
Rheumatology International. 42:1221-1226
The Paediatric Rheumatology International Trials Organisation (PRINTO) criteria for clinically inactive disease (CID) and their proposal for glucocorticoid tapering do not consider MRI findings, despite the growing use of MRI and development of relia
Autor:
William A. Coles, Jiguang Lu, Yi Feng, Weiwei Zhu, Chenchen Miao, Richard N. Manchester, W. M. Yan, Daniel R. Stinebring, Jumei Yao, Pei Wang, Di Li, Na Wang, Mao Yuan, Michael Kramer
Publikováno v:
Nature Astronomy. 5:788-795
More than 50 years after the discovery of pulsars1 and confirmation of their association with supernova explosions2–4, the origin of the initial spin and velocity of pulsars remains largely a mystery. The typical space velocities of several hundred
Autor:
Jumei Yao, William A. Coles, Richard N. Manchester, Daniel R. Stinebring, Michael Kramer, Na Wang, Di Li, Weiwei Zhu, Yi Feng, Jianping Yuan, Pei Wang
Publikováno v:
The Astrophysical Journal. 939:75
High sensitivity interstellar scintillation and polarization observations of PSR~B0656+14 made at three epochs over a year using the Five-hundred-meter Aperture Spherical radio Telescope (FAST) show that the scattering is dominated by two different c
Publikováno v:
Geophysical Research Letters. 46:2610-2618
Autor:
Andrew Cameron, Matthew Bailes, Hong-Guang Wang, Songbo Zhang, Willem van Straten, Stefan Oslowski, Shi Dai, Aditya Parthasarathy, B. Preisig, James Dempsey, B. Goncharov, John Sarkissian, Lawrence Toomey, Xing-Jiang Zhu, Matthew Kerr, William A. Coles, Daniel J. Reardon, Jingbo Wang, Ryan Shannon, Marcus E. Lower, Lei Zhang, Michael Keith, Jane F. Kaczmarek, Renée Spiewak, Richard N. Manchester, George Hobbs, Paul D. Lasky, Christopher J. Russell, N. D. Ramesh Bhat, Xinping Deng
We describe 14 years of public data from the Parkes Pulsar Timing Array (PPTA), an ongoing project that is producing precise measurements of pulse times of arrival from 26 millisecond pulsars using the 64-m Parkes radio telescope with a cadence of ap
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1a39a4364c90db3977587510fdeac778
http://arxiv.org/abs/2003.09780
http://arxiv.org/abs/2003.09780
Autor:
Sourav Chatterjee, Daniel J. Reardon, Ismaël Cognard, Gemma H. Janssen, Sarah Burke-Spolaor, Zaven Arzoumanian, Michael T. Lam, Kejia Lee, Michael Kramer, Benetge Perera, J. B. Wang, L. Guo, Renée Spiewak, Ryan Shannon, David J. Nice, Richard N. Manchester, N. D. R. Bhat, D. Matsakis, E. Graikou, Joseph Simon, Ingrid H. Stairs, R. N. Caballero, Shi Dai, Matthew Bailes, Christopher J. Russell, Alberto Sesana, Robert D. Ferdman, Lucas Guillemot, Delphine Perrodin, Xing-Jiang Zhu, Andrew Lyne, Chiara M. F. Mingarelli, C. G. Bassa, Benjamin Stappers, A. Brazier, R. van Haasteren, Timothy T. Pennucci, J. W. McKee, Yue-Fei Wang, Maura McLaughlin, Michael Keith, L. Toomey, Matthew Kerr, William A. Coles, Timothy Dolch, Stefan Oslowski, M. L. Tong, Stephen Taylor, D. J. Champion, Kang Liu, S. A. Sanidas, George Hobbs, J. K. Swiggum, Gregory Desvignes, Gilles Theureau, A. Possenti, T. J. W. Lazio, R. S. Lynch, G. Shaifullah
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Mon.Not.Roy.Astron.Soc.
Mon.Not.Roy.Astron.Soc., 2020, 491 (4), pp.5951-5965. ⟨10.1093/mnras/stz3071⟩
Monthly Notices of the Royal Astronomical Society, 491, 5951-5965
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2020, 491 (4), pp.5951-5965. ⟨10.1093/mnras/stz3071⟩
Monthly Notices of the Royal Astronomical Society, vol 491, iss 4
Monthly Notices of the Royal Astronomical Society, 491, 4, pp. 5951-5965
Keith, M, Lyne, A, Perera, B, Sanidas, S, Stappers, B & et al. 2019, ' A pulsar-based timescale from the International Pulsar Timing Array ', Monthly Notices of the Royal Astronomical Society, vol. 491, no. 4, pp. 5951-5965 . https://doi.org/10.1093/mnras/stz3071
Mon.Not.Roy.Astron.Soc.
Mon.Not.Roy.Astron.Soc., 2020, 491 (4), pp.5951-5965. ⟨10.1093/mnras/stz3071⟩
Monthly Notices of the Royal Astronomical Society, 491, 5951-5965
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2020, 491 (4), pp.5951-5965. ⟨10.1093/mnras/stz3071⟩
Monthly Notices of the Royal Astronomical Society, vol 491, iss 4
Monthly Notices of the Royal Astronomical Society, 491, 4, pp. 5951-5965
Keith, M, Lyne, A, Perera, B, Sanidas, S, Stappers, B & et al. 2019, ' A pulsar-based timescale from the International Pulsar Timing Array ', Monthly Notices of the Royal Astronomical Society, vol. 491, no. 4, pp. 5951-5965 . https://doi.org/10.1093/mnras/stz3071
We have constructed a new timescale, TT(IPTA16), based on observations of radio pulsars presented in the first data release from the International Pulsar Timing Array (IPTA). We used two analysis techniques with independent estimates of the noise mod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2b8de1201a3a8936e4d8492598a15536
https://doi.org/10.1093/mnras/stz3071
https://doi.org/10.1093/mnras/stz3071
Searching for gravitational wave bursts from cosmic string cusps with the Parkes Pulsar Timing Array
Autor:
Eric Howard, Shi Dai, Naoyuki Yonemaru, Renée Spiewak, Xing-Jiang Zhu, J. B. Wang, William A. Coles, George Hobbs, Richard N. Manchester, Nithyanandan Thyagarajan, Daniel J. Reardon, Sachiko Kuroyanagi, Christopher J. Russell, Keitaro Takahashi, Ryan Shannon
Cosmic strings are potential gravitational wave (GW) sources that can be probed by pulsar timing arrays (PTAs). In this work we develop a detection algorithm for a GW burst from a cusp on a cosmic string, and apply it to Parkes PTA data. We find four
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::390c0a7952ddbc825cbca1aa7a66349b