11 papers
Gravitational-wave Limits from Pulsar Timing Constrain Supermassive Black Hole Evolution
R. M. Shannon, V. Ravi, W. A. Coles +14
The formation and growth processes of supermassive black holes (SMBHs) are not well constrained. SMBH population models, however, provide specific predictions for the properties of…
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…
The Parkes Pulsar Timing Array Project
R. N. Manchester, G. Hobbs, M. Bailes +28
A "pulsar timing array" (PTA), in which observations of a large sample of pulsars spread across the celestial sphere are combined, allows investigation of "global" phenomena such a…
Development of a pulsar-based timescale
G. Hobbs, W. Coles, R. N. Manchester +21
Using observations of pulsars from the Parkes Pulsar Timing Array (PPTA) project we develop the first pulsar-based timescale that has a precision comparable to the uncertainties in…
Using the Parkes Pulsar Data Archive
J. Khoo, G. Hobbs, R. N. Manchester +2
The Parkes Pulsar Data Archive currently provides access to 165,755 data files obtained from observations carried out at the Parkes Observatory since the year 1991. Data files and…
The Parkes Observatory Pulsar Data Archive
G. Hobbs, D. Miller, R. N. Manchester +39
The Parkes pulsar data archive currently provides access to 144044 data files obtained from observations carried out at the Parkes observatory since the year 1991. Around 10^5 file…