scholarly journals The Parkes Observatory Pulsar Data Archive

2011 ◽  
Vol 28 (3) ◽  
pp. 202-214 ◽  
Author(s):  
G. Hobbs ◽  
D. Miller ◽  
R. N. Manchester ◽  
J. Dempsey ◽  
J. M. Chapman ◽  
...  
Keyword(s):  
Outreach Program ◽  
Data Archive ◽  
Virtual Observatory ◽  
Access Methods ◽  
Pulsar Timing ◽  
Data Files ◽  
Pulsar Timing Array

AbstractThe 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 105 files are from surveys of the sky, the remainder are observations of 775 individual pulsars and their corresponding calibration signals. Survey observations are included from the Parkes 70 cm and the Swinburne Intermediate Latitude surveys. Individual pulsar observations are included from young pulsar timing projects, the Parkes Pulsar Timing Array and from the PULSE@Parkes outreach program. The data files and access methods are compatible with Virtual Observatory protocols. This paper describes the data currently stored in the archive and presents ways in which these data can be searched and downloaded.

scholarly journals The Parkes Pulsar Timing Array project: second data release

2020 ◽  
Vol 37 ◽  
Author(s):  
Matthew Kerr ◽  
Daniel J. Reardon ◽  
George Hobbs ◽  
Ryan M. Shannon ◽  
Richard N. Manchester ◽  
...  
Keyword(s):  
Interference Mitigation ◽  
Stokes Parameters ◽  
Correlated Noise ◽  
Pulsar Timing ◽  
Public Data ◽  
Data Files ◽  
Recorded Data ◽  
The Stability ◽  
Radio Band ◽  
Pulsar Timing Array

Abstract We describe 14 yr 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 approximately 3 weeks in three observing bands. A comprehensive description of the pulsar observing systems employed at the telescope since 2004 is provided, including the calibration methodology and an analysis of the stability of system components. We attempt to provide full accounting of the reduction from the raw measured Stokes parameters to pulse times of arrival to aid third parties in reproducing our results. This conversion is encapsulated in a processing pipeline designed to track provenance. Our data products include pulse times of arrival for each of the pulsars along with an initial set of pulsar parameters and noise models. The calibrated pulse profiles and timing template profiles are also available. These data represent almost 21 000 h of recorded data spanning over 14 yr. After accounting for processes that induce time-correlated noise, 22 of the pulsars have weighted root-mean-square timing residuals of $<\!\!1\,\mu\text{s}$ in at least one radio band. The data should allow end users to quickly undertake their own gravitational wave analyses, for example, without having to understand the intricacies of pulsar polarisation calibration or attain a mastery of radio frequency interference mitigation as is required when analysing raw data files.

scholarly journals Searching for gravitational-wave bursts from cosmic string cusps with the Parkes Pulsar Timing Array

2020 ◽  
Vol 501 (1) ◽  
pp. 701-712
Author(s):  
N Yonemaru ◽  
S Kuroyanagi ◽  
G Hobbs ◽  
K Takahashi ◽  
X-J Zhu ◽  
...  
Keyword(s):  
False Alarm ◽  
Gravitational Wave ◽  
Cosmic String ◽  
Cosmic Strings ◽  
False Alarm Probability ◽  
String Tension ◽  
Detection Algorithm ◽  
Pulsar Timing ◽  
Upper Limits ◽  
Pulsar Timing Array

ABSTRACT 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 events with a false alarm probability less than 1 per cent. However further investigation shows that all of these are likely to be spurious. As there are no convincing detections we place upper limits on the GW amplitude for different event durations. From these bounds we place limits on the cosmic string tension of Gμ ∼ 10−5, and highlight that this bound is independent from those obtained using other techniques. We discuss the physical implications of our results and the prospect of probing cosmic strings in the era of Square Kilometre Array.

scholarly journals The Parkes Pulsar Timing Array Project

2008 ◽  
Author(s):  
R. N. Manchester ◽  
C. Bassa ◽  
Z. Wang ◽  
A. Cumming ◽  
V. M. Kaspi
Keyword(s):  
Pulsar Timing ◽  
Pulsar Timing Array

scholarly journals Pulsar science with the CHIME telescope

2017 ◽  
Vol 13 (S337) ◽  
pp. 179-182 ◽  
Author(s):  
Cherry Ng
Keyword(s):  
Northern Hemisphere ◽  
Radio Telescope ◽  
Field Of View ◽  
Radio Bursts ◽  
Radio Telescopes ◽  
Acoustic Oscillations ◽  
Daily Monitoring ◽  
Intensity Mapping ◽  
Pulsar Timing ◽  
Pulsar Timing Array

AbstractThe CHIME telescope (the Canadian Hydrogen Intensity Mapping Experiment) recently built in Penticton, Canada, is currently being commissioned. Originally designed as a cosmology experiment, it was soon recognized that CHIME has the potential to simultaneously serve as an incredibly useful radio telescope for pulsar science. CHIME operates across a wide bandwidth of 400–800 MHz and will have a collecting area and sensitivity comparable to that of the 100-m class radio telescopes. CHIME has a huge field of view of ~250 square degrees. It will be capable of observing 10 pulsars simultaneously, 24-hours per day, every day, while still accomplishing its missions to study Baryon Acoustic Oscillations and Fast Radio Bursts. It will carry out daily monitoring of roughly half of all pulsars in the northern hemisphere, including all NANOGrav pulsars employed in the Pulsar Timing Array project. It will cycle through all pulsars in the northern hemisphere with a range of cadence of no more than 10 days.

Limiting and Detecting Gravitational Waves with a Pulsar Timing Array

2011 ◽  
Author(s):  
D. R. B. Yardley ◽  
W. A. Coles ◽  
G. B. Hobbs ◽  
R. N. Manchester ◽  
Marta Burgay ◽  
...  
Keyword(s):  
Gravitational Waves ◽  
Pulsar Timing ◽  
Pulsar Timing Array

scholarly journals Studying the Solar system with the International Pulsar Timing Array

2018 ◽  
Vol 481 (4) ◽  
pp. 5501-5516 ◽  
Author(s):  
R N Caballero ◽  
Y J Guo ◽  
K J Lee ◽  
P Lazarus ◽  
D J Champion ◽  
...  
Keyword(s):  
Solar System ◽  
Pulsar Timing ◽  
Pulsar Timing Array
Sign in / Sign up

Export Citation Format

Share Document