TL;DR
The Parkes Pulsar Timing Array project aims to detect gravitational waves, refine solar system ephemeris, and develop a pulsar-based time scale, with current data providing the most stringent upper bounds on gravitational wave background.
Contribution
This paper details the PPTA project, data collection methods, and current research, highlighting the most stringent upper bounds on gravitational waves to date.
Findings
Placed the most stringent upper bounds on gravitational wave background
Described data collection and processing methods
Outlined current research directions
Abstract
The aims of the Parkes Pulsar Timing Array (PPTA) project are to 1) make a direct detection of gravitational waves, 2) improve the solar system planetary ephemeris and 3) develop a pulsar-based time scale. In this article we describe the project, explain how the data are collected and processed and describe current research. Our current data sets are able to place an upper bound on the gravitational wave background that is the most stringent to date.
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Taxonomy
TopicsPulsars and Gravitational Waves Research · Geophysics and Gravity Measurements · Computational Physics and Python Applications