We are founding members of the International Pulsar Timing Array (@IPTA_GW, ipta4gw.org), a consortium of consortia, in which we collaborate to cross-check our results and make plans for future improvemens of our work.

International Pulsar Timing Array

The International Pulsar Timing Array is a collaboration formed from the five main PTA groups (APT, EPTA, InPTA, NANOGrav, and PPTA) as well as interested researchers from a variety of countries.

ipta4gw.org
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So, where can you find the papers? There are no less than 6 of them on the ArXiV right now! We are so proud of all our members that contributed to this work
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Our first paper describes our data set; overall we have used our best 25 millisecond pulsars that have been observed over the last ~25 years with the five largest radio telescopes in Europe, as well as the Large European Array for Pulsars.
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EPTAPaper 1 presents #EPTA Data Release 2; it extends our baseline from EPTA Data Release 1 and improved constraints on and measurements of various timing parameters and astrophysical parameters that can be derived from those.
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Lead authors for paper 1 are Jiwoong Jiang, Kuo Liu and Golam Shaifullah. You can find the full paper here: DOI 10.1051/0004-6361/202346841 (further links to come when available)
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Our second paper combines efforts of @EPTAGW with the @INPTA_GW and describes a new method to select the preferred set of noise models for every pulsar in our data set. This enables a robust characterisation of single-pulsar noise, which is extremely important for paper 3!
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Lead authors for paper 2 are Aurelien Chalumeau, Michael Keith and Aditya Parthasaraty. Links at the end of this thread!
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Paper 3, you may be most interested in this! Our search for gravitational wave signals in the 2nd data release of the @EPTAGW European Pulsar Timing Array data, combined with the first data release of the Indian Pulsar Timing Array @INPTA_GW that allows better noise modelling..
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In this paper we compare several data versions; it turns out that the latest EPTA data from our new-generation observing systems show non-negligible evidence for a gravitational wave background being present in our data

Jun 29, 2023 · 12:31 AM UTC

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Lead authors for paper 3 are Siyuan Chen and Yanjun Guo. So these are our three main papers that will be published in @AandA_journal, we will post links here as soon as they become available!
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And here are the links: Paper 1: data: arxiv.org/abs/2306.16224 Paper 2: noise modelling: arxiv.org/abs/2306.16225 Paper 3: search for gravitational wave signals: arxiv.org/abs/2306.16214
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Paper 4: search for continuous wave signals: arxiv.org/abs/2306.16226 Paper 5: implications for massive black holes, dark matter and the early Universe: arxiv.org/abs/2306.16227 Paper 6: limits on ultralight Dark Matter: arxiv.org/abs/2306.16228
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