Radio and gamma-ray timing of TRAPUM L -band Fermi pulsar survey discoveries

authored by: M. Burgay, L. Nieder, C. J. Clark, P. C.C. Freire, S. Buchner, T. Thongmeearkom, J. D. Turner, E. Carli, I. Cognard, J. M. Grieaβmeier, R. Karuppusamy, M. C. I Bernadich, A. Possenti, V. Venkatraman Krishnan, R. P. Breton, E. D. Barr, B. W. Stappers, M. Kramer, L. Levin, S. M. Ransom, P. V. Padmanabh
Abstract: 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.
Organisation(s): Institute of Gravitation Physics
External Organisation(s): Istituto Nazionale di Astrofisica (INAF)
Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
Max Planck Institute for Radio Astronomy (MPIfR)
South African Radio Astronomy Observatory (SARAO)
University of Manchester
National Astronomical Research Institute of Thailand
Universite d'Orleans
PSL Research University
National Radio Astronomy Observatory Socorro
Type: Article
Journal: Astronomy and astrophysics
Volume: 691
No. of pages: 20
ISSN: 0004-6361
Publication date: 11.2024
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Astronomy and Astrophysics, Space and Planetary Science
Electronic version(s): https://doi.org/10.1051/0004-6361/202451530 (Access: Open)

BibTeX

@article{97cc75bfd1fd4760b2907065901ed40b,
title = "Radio and gamma-ray timing of TRAPUM L -band Fermi pulsar survey discoveries",
abstract = "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.",
keywords = "Binaries: eclipsing, Binaries: general, Gamma rays: stars, Pulsars: general",
author = "M. Burgay and L. Nieder and Clark, {C. J.} and Freire, {P. C.C.} and S. Buchner and T. Thongmeearkom and Turner, {J. D.} and E. Carli and I. Cognard and Grieaβmeier, {J. M.} and R. Karuppusamy and {I Bernadich}, {M. C.} and A. Possenti and {Venkatraman Krishnan}, V. and Breton, {R. P.} and Barr, {E. D.} and Stappers, {B. W.} and M. Kramer and L. Levin and Ransom, {S. M.} and Padmanabh, {P. V.}",
note = "Publisher Copyright: {\textcopyright} 2024 The Authors.",
year = "2024",
month = nov,
doi = "10.1051/0004-6361/202451530",
language = "English",
volume = "691",
journal = "Astronomy and astrophysics",
issn = "0004-6361",
publisher = "EDP Sciences",
}