Matteo Braglia
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Articles (10)
Year:
2023
Year:
2023
Astrometric surveys can be used to constrain the stochastic gravitational wave background (SGWB) at very low frequencies. We use proper motion data provided by Gaia DR3 to fit a generic dipole+quadrupole field. We analyse several quasar-based data sets and discuss their purity and idoneity to set constraints on gravitational waves. For the cleanest data set, we derive an upper bound on the (frequency-integrated) energy density of the SGWB $h_{70}^2\Omega _{\rm GW}\lesssim 0.087$ for 4.2 × 10−18 Hz ≲ f ≲ 1.1 × 10−8 Hz. We also reanalyse previous VLBI-based data to set the constraint $h_{70}^2\Omega _{\rm GW}\lesssim 0.024$ for 5.8 × 10−18 Hz ≲ f ≲ 1.4 × 10−9 Hz under the same formalism, standing as the best astrometric constraint on GWs. Based on our results, we discuss the potential of future Gaia data releases to impose tighter constraints.
Year:
2023
Year:
2023
Year:
2023
Year:
2023
Year:
2022
Year:
2022
Year:
2021
Year:
2021
Collaborators (43)
Daniel Holz
University of Chicago
Luise Kranzhoff
University of Maastricht
khun Sang Phukon
University of Birmingham
Andrei Linde
Professor
Stanford University
Aaron Zimmerman
Assistant Professor
University of Texas at Austin
Ian Harry
Academic, Reader, Reader in Gravitational Wave Astronomy
University of Portsmouth
Miquel Miravet
University of Southampton
B. J. J. Slagmolen
Australian National University
Hong Qi
Lecturer (Assistant Professor)
Queen Mary University of London
Philip Charlton
Charles Sturt University
Carl Blair
University of Western Australia
ESTER RUIZ MORALES
Profesora Titular de Universidad
Universidad Politécnica de Madrid
Jian Liu
University of Western Australia
Ryan Fisher
Associate Professor
Christopher Newport University
David Blair
University of Western Australia
Gungwon Kang
Professor
Chung-Ang University
Francesca Faedi
Lecturer on Space Economy
University of Leicester
John Veitch
Senior Lecturer
University of Glasgow
Rosa Poggiani
Associate Professor
University of Pisa
Terry McRae
Australian National University
Patrick Brady
Professor
University of Wisconsin-Milwaukee
David Coward
University of Western Australia
Amber Stuver
Associate Professor
Villanova University
Andrei Utina
University of Maastricht
Salvatore Vitale
Assistant Professor
Massachusetts Institute of Technology
Manoj Kovalam
University of Western Australia
Alessandro Parisi
Assistant Professor (RTD-A)
University of Perugia
Jan Harms
Professor
Gran Sasso Science Institute
Archisman Ghosh
Assistant Professor (ZAP docent tenure track)
Ghent University
Bhaskar Biswas
Universität Hamburg
Oleg Bulashenko
Associate Professor
University of Barcelona
Jonas Junker
Australian National University
Richard O'Shaughnessy
Rochester Institute of Technology
Vaishali Adya
KTH Royal Institute of Technology
Patricia Schmidt
Associate Professor
University of Birmingham
Michael Pürrer
Adjunct Assistant Professor
University of Rhode Island
Francesco Pannarale
Associate Professor
Sapienza University of Rome
Christopher Berry
University of Glasgow
Chayan Chatterjee
University of Western Australia
Damon Beveridge
University of Western Australia
Alexandra Mitchell
University of Amsterdam
Sunil Choudhary
University of Western Australia
Kevin Turbang
Vrije Universiteit Brussel
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