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Three-dimensional Tomography of the Galactic and Extragalactic Magnetoionic Medium with the SKA
J. L. Han, W. van Straten, T. J. W. Lazio +9
The magneto-ionic structures of the interstellar medium of the Milky Way and the intergalactic medium are still poorly understood, especially at distances larger than a few kilopar…
Searching for gravitational wave memory bursts with the Parkes Pulsar Timing Array
J. B. Wang, G. Hobbs, W. Coles +17
Anisotropic bursts of gravitational radiation produced by events such as super-massive black hole mergers leave permanent imprints on space. Such gravitational wave "memory" (GWM)…
An all-sky search for continuous gravitational waves in the Parkes Pulsar Timing Array data set
X. -J. Zhu, G. Hobbs, L. Wen +16
We present results of an all-sky search in the Parkes Pulsar Timing Array (PPTA) Data Release 1 data set for continuous gravitational waves (GWs) in the frequency range from $5\tim…
Dispersion measure variations in a sample of 168 pulsars
E. Petroff, M. J. Keith, S. Johnston +2
We analyse dispersion measure (DM) variations in six years of radio observations of more than 160 young pulsars, all gamma ray candidates for the Fermi gamma ray telescope mostly l…
Measurement and correction of variations in interstellar dispersion in high-precision pulsar timing
M. J. Keith, W. Coles, R. M. Shannon +16
Signals from radio pulsars show a wavelength-dependent delay due to dispersion in the interstellar plasma. At a typical observing wavelength, this delay can vary by tens of microse…
High signal-to-noise ratio observations and the ultimate limits of precision pulsar timing
Stefan Oslowski, Willem van Straten, George Hobbs +2
We demonstrate that the sensitivity of high-precision pulsar timing experiments will be ultimately limited by the broadband intensity modulation that is intrinsic to the pulsar's s…
On detection of the stochastic gravitational-wave background using the Parkes pulsar timing array
D. R. B. Yardley, W. A. Coles, G. B. Hobbs +12
We search for the signature of an isotropic stochastic gravitational-wave background in pulsar timing observations using a frequency-domain correlation technique. These observation…
The Sensitivity of the Parkes Pulsar Timing Array to Individual Sources of Gravitational Waves
D. R. B. Yardley, G. B. Hobbs, F. A. Jenet +11
We present the sensitivity of the Parkes Pulsar Timing Array to gravitational waves emitted by individual super-massive black-hole binary systems in the early phases of coalescing…
Giant pulses from the Crab pulsar: A wide-band study
R. Karuppusamy, B. W. Stappers, W. van Straten
The Crab pulsar is well-known for its anomalous giant radio pulse emission. Past studies have concentrated only on the very bright pulses or were insensitive to the faint end of th…
Observations and Modelling of Relativistic Spin Precession in PSR J1141-6545
R. N. Manchester, M. Kramer, I. H. Stairs +10
Observations of the binary pulsar PSR J1141-6545 using the Parkes radio telescope over 9.3 years show clear time-variations in pulse width, shape and polarization. We interpret the…
Status Update of the Parkes Pulsar Timing Array
J. P. W. Verbiest, M. Bailes, N. D. R. Bhat +16
The Parkes Pulsar Timing Array project aims to make a direct detection of a gravitational-wave background through timing of millisecond pulsars. In this article, the main requireme…
Radio detection of LAT PSRs J1741-2054 and J2032+4127: no longer just gamma-ray pulsars
F. Camilo, P. S. Ray, S. M. Ransom +24
Sixteen pulsars have been discovered so far in blind searches of photons collected with the Large Area Telescope on the Fermi Gamma-ray Space Telescope. We here report the discover…
Timing stability of millisecond pulsars and prospects for gravitational-wave detection
J. P. W. Verbiest, M. Bailes, W. A. Coles +11
Analysis of high-precision timing observations of an array of approx. 20 millisecond pulsars (a so-called "timing array") may ultimately result in the detection of a stochastic gra…