Zobrazeno 71 - 80
of 188
pro vyhledávání: '"Shannon, Ryan M."'
Autor:
Lasky, Paul D., Mingarelli, Chiara M. F., Smith, Tristan L., Giblin Jr., John T., Thrane, Eric, Reardon, Daniel J., Caldwell, Robert, Bailes, Matthew, Bhat, N. D. Ramesh, Burke-Spolaor, Sarah, Dai, Shi, Dempsey, James, Hobbs, George, Kerr, Matthew, Levin, Yuri, Manchester, Richard N., Osłowski, Stefan, Ravi, Vikram, Rosado, Pablo A., Shannon, Ryan M., Spiewak, Renée, van Straten, Willem, Toomey, Lawrence, Wang, Jingbo, Wen, Linqing, You, Xiaopeng, Zhu, Xingjiang
Publikováno v:
Phys. Rev. X 6, 011035 (2016)
Quantum fluctuations of the gravitational field in the early Universe, amplified by inflation, produce a primordial gravitational-wave background across a broad frequency band. We derive constraints on the spectrum of this gravitational radiation, an
Externí odkaz:
http://arxiv.org/abs/1511.05994
Complementary to ground-based laser interferometers, pulsar timing array experiments are being carried out to search for nanohertz gravitational waves. Using the world's most powerful radio telescopes, three major international collaborations have co
Externí odkaz:
http://arxiv.org/abs/1509.06438
We have searched a sample of 151 young, energetic pulsars for periodic variation in pulse time-of-arrival arising from the influence of planetary companions. We are sensitive to objects with masses two orders of magnitude lower than those detectable
Externí odkaz:
http://arxiv.org/abs/1507.06982
Autor:
Gordon, Alexa C., Fong, Wen-fai, Simha, Sunil, Dong, Yuxin, Kilpatrick, Charles D., Deller, Adam T., Ryder, Stuart D., Eftekhari, Tarraneh, Glowacki, Marcin, Marnoch, Lachlan, Muller, August R., Nugent, Anya E., Palmese, Antonella, Prochaska, J. Xavier, Rafelski, Marc, Shannon, Ryan M., Tejos, Nicolas
Publikováno v:
Astrophysical Journal Letters; 3/10/2024, Vol. 963 Issue 2, p1-17, 17p
Autor:
Lentati, Lindley, Alexander, Paul, Hobson, Michael P., Feroz, Farhan, van Haasteren, Rutger, Lee, Kejia, Shannon, Ryan M.
A new Bayesian software package for the analysis of pulsar timing data is presented in the form of TempoNest which allows for the robust determination of the non-linear pulsar timing solution simultaneously with a range of additional stochastic param
Externí odkaz:
http://arxiv.org/abs/1310.2120
Autor:
Shannon, Ryan M., Johnston, Simon
We have carried out observations of the newly-discovered magnetar in the direction of Sagittarius A* using the Australia Telescope Compact Array in four frequency bands from 4.5 to 20 GHz. Radio pulsations are clearly detected at all frequencies. We
Externí odkaz:
http://arxiv.org/abs/1305.3036
Autor:
Shannon, Ryan M., Cordes, James M.
Most millisecond pulsars, like essentially all other radio pulsars, show timing errors well in excess of what is expected from additive radiometer noise alone. We show that changes in amplitude, shape and pulse phase for the millisecond pulsar J1713+
Externí odkaz:
http://arxiv.org/abs/1210.7021
Autor:
Shannon, Ryan M., Cordes, James M.
Publikováno v:
Astrophys.J.725:1607-1619,2010
We investigate rotational spin noise (referred to as timing noise) in non-accreting pulsars: millisecond pulsars, canonical pulsars, and magnetars. Particular attention is placed on quantifying the strength and non-stationarity of timing noise in mil
Externí odkaz:
http://arxiv.org/abs/1010.4794
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