Radio and gamma-ray timing of TRAPUM <i>L</i>-band <i>Fermi</i> pulsar survey discoveries
This paper presents the results of a joint radio and gamma-ray timing campaign on the nine millisecond pulsars (MSPs) discovered as part of the L -band targeted survey of Fermi -LAT sources performed in the context of the Transients and Pulsars with MeerKAT (TRAPUM) Large Survey Project. Out of these pulsars, eight are members of binary systems; of these eight, two exhibit extended eclipses of the radio emission. Using an initial radio timing solution, pulsations were found in the gamma rays for six of the targets. For these sources, a joint timing analysis of radio times of arrival and gamma-ray photons was performed, using a newly developed code that optimises the parameters through a Markov chain Monte Carlo (MCMC) technique. This approach has allowed us to precisely measure both the short- and long-term timing parameters. This study includes a proper motion measurement for four pulsars, which a gamma ray-only analysis would not have been sensitive to, despite the 15-year span of Fermi data.
Authors
- Sarah Buchner (ORCID: https://orcid.org/0000-0002-1691-0215)
- Ismaël Cognard (ORCID: https://orcid.org/0000-0002-1775-9692)
- C. J. Clark (ORCID: https://orcid.org/0000-0003-4355-3572)
- L. Levin (ORCID: https://orcid.org/0000-0002-2034-2986)
- A. Possenti
- L. Nieder (ORCID: https://orcid.org/0000-0002-5775-8977)
- R. P. Breton (ORCID: https://orcid.org/0000-0001-8522-4983)
- B. W. Stappers
- T Thongmeearkom (ORCID: https://orcid.org/0000-0002-9285-6724)
- E Carli (ORCID: https://orcid.org/0000-0003-3265-2866)
- P V Padmanabh (ORCID: https://orcid.org/0000-0001-5624-4635)
- S. M. Ransom
- John D. Turner (ORCID: https://orcid.org/0000-0001-8183-4557)
- M. Kramer (ORCID: https://orcid.org/0000-0002-4175-2271)
- J.‐M. Grießmeier (ORCID: https://orcid.org/0000-0003-3362-7996)
- Miquel Colom i Bernadich (ORCID: https://orcid.org/0000-0002-2965-5911)
- V. Venkatraman Krishnan (ORCID: https://orcid.org/0000-0001-9518-9819)
- M. Burgay (ORCID: https://orcid.org/0000-0002-8265-4344)
- R. Karuppusamy (ORCID: https://orcid.org/0000-0002-5307-2919)
- E. D. Barr
- P. C. C. Freire (ORCID: https://orcid.org/0000-0003-1307-9435)
Institutions
- Leibniz University Hannover (DE)
- Université d'Orléans (FR)
- Centre National de la Recherche Scientifique (FR)
- National Radio Astronomy Observatory (US)
- Observatoire de Paris (FR)
- University of Manchester (GB)
- South African Radio Astronomy Observatory (ZA)
- Max Planck Institute for Gravitational Physics (DE)
- Osservatorio Astronomico di Cagliari (IT)
- Max Planck Institute for Radio Astronomy (DE)
- Laboratoire de Physique et Chimie de l’Environnement et de l’Espace (FR)
- National Astronomical Research Institute of Thailand (TH)
Publication Details
- Journal
- Astronomy and Astrophysics
- Published
- 2024-10-03
- DOI
- https://doi.org/10.1051/0004-6361/202451530
- Citations
- 4
- Primary Topic
- Pulsars and Gravitational Waves Research
- Type
- article
- Field-Weighted Citation Impact
- 1.33
Funders
- National Science Foundation
- Australian Government
- Commonwealth Scientific and Industrial Research Organisation
- National Research Foundation
- Swinburne University of Technology
- Max-Planck-Gesellschaft
- Istituto Nazionale di Astrofisica
- Ministero degli Affari Esteri e della Cooperazione Internazionale
- Regione Autonoma della Sardegna
- Observatoire de Paris, Université de Recherche Paris Sciences et Lettres
- Engineering and Physical Sciences Research Council
- Science and Technology Facilities Council
- European Research Council