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Parkes observations for project P895 semester 2018APRS_03

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Title Parkes observations for project P895 semester 2018APRS_03
 
Creator G Hobbs
 
Subject Astronomical and Space Sciences not elsewhere classified
 
Description Since the year 2005, the Parkes Pulsar Timing Array (PPTA) project has been placing ever more stringent constraints on the amplitude of a gravitational wave background signal. Such upper bounds on the amplitude of the gravitational wave signal are currently dominated by a single pulsar: PSR J1909-3744. The upper bound with this pulsar alone already cuts into the range of tenable theoretical models. Further reducing the amplitude bound (by continued regular observations of this pulsar) will significantly narrow that range. The first evidence of gravitational waves in the pulsar data are likely to be observed in the timing for PSR J1909-3744, but with only a single pulsar we will not be able to make an unambiguous detection. However, knowledge of the likely signal strength (derived from this pulsar) will help to optimise the observing strategy for the detection of the gravitational wave signals with existing or future pulsar timing arrays.
 
Publisher CSIRO
 
Contributor R Manchester
John Sarkissian
Matthew Bailes
Ramesh Bhat
Michael Keith
William Coles
Willem van Straten
Lawrence Toomey
Chris Russell
xiaopeng You
Vikram Ravi
Stefan Oslowski
Matthew Kerr
James Dempsey
Ryan Shannon
Jingbo Wang
Linqing Wen
Xingjiang Zhu
Shi Dai
Paul Lasky
Sarah Burke
Daniel John Reardon
Lei Zhang
Pablo Rosado
Renee Spiewak
Aditya Parthasarathy
 
Date 2018-08-16
 
Type —
 
Format —
 
Identifier csiro:34647
 
Language —
 
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