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  • Boersma, O. M.Netherlands Institute for Radio Astronomy (ASTRON),Universiteit Van Amsterdam,University of Amsterdam (author)

A search for radio emission from double-neutron star merger GW190425 using Apertif

  • Article/chapterEnglish2021

Publisher, publication year, extent ...

  • 2021-06-18
  • EDP Sciences,2021

Numbers

  • LIBRIS-ID:oai:research.chalmers.se:7b9115f9-2dda-4cc4-9978-65e34ac32688
  • https://doi.org/10.1051/0004-6361/202140578DOI
  • https://research.chalmers.se/publication/524724URI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • Context Detection of the electromagnetic emission from coalescing binary neutron stars (BNS) is important for understanding the merger and afterglow. Aims. We present a search for a radio counterpart to the gravitational-wave (GW) source GW190425, a BNS merger, using Apertif on the Westerbork Synthesis Radio Telescope (WSRT). Methods We observed a field of high probability in the associated localisation region for three epochs at ΔTâ€., =â€., 68, 90, 109 d post merger. We identified all sources that exhibit flux variations consistent with the expected afterglow emission of GW190425. We also looked for possible transients. These are sources that are only present in one epoch. In addition, we quantified our ability to search for radio afterglows in the fourth and future observing runs of the GW detector network using Monte Carlo simulations. Results We found 25 afterglow candidates based on their variability. None of these could be associated with a possible host galaxy at the luminosity distance of GW190425. We also found 55 transient afterglow candidates that were only detected in one epoch. All of these candidates turned out to be image artefacts. In the fourth observing run, we predict that up to three afterglows will be detectable by Apertif. Conclusions While we did not find a source related to the afterglow emission of GW190425, the search validates our methods for future searches of radio afterglows.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • van Leeuwen, J.Universiteit Van Amsterdam,University of Amsterdam,Netherlands Institute for Radio Astronomy (ASTRON) (author)
  • Adams, E. A.K.Netherlands Institute for Radio Astronomy (ASTRON),Rijksuniversiteit Groningen,University of Groningen (author)
  • Adebahr, B.Ruhr-Universität Bochum (author)
  • Kutkin, A. M.Russian Academy of Sciences,Netherlands Institute for Radio Astronomy (ASTRON) (author)
  • Oosterloo, T.Rijksuniversiteit Groningen,University of Groningen,Netherlands Institute for Radio Astronomy (ASTRON) (author)
  • de Blok, W.J.G.University of Cape Town,Netherlands Institute for Radio Astronomy (ASTRON),Rijksuniversiteit Groningen,University of Groningen (author)
  • Van Den Brink, R. H.Netherlands Institute for Radio Astronomy (ASTRON) (author)
  • Coolen, A. H.W.M.Netherlands Institute for Radio Astronomy (ASTRON) (author)
  • Connor, L.California Institute of Technology (Caltech),Universiteit Van Amsterdam,University of Amsterdam (author)
  • Damstra, SiedsNetherlands Institute for Radio Astronomy (ASTRON) (author)
  • Dénes, H.Netherlands Institute for Radio Astronomy (ASTRON) (author)
  • Hess, K. M.Netherlands Institute for Radio Astronomy (ASTRON),Rijksuniversiteit Groningen,University of Groningen (author)
  • van der Hulst, J. M.Rijksuniversiteit Groningen,University of Groningen (author)
  • Hut, B.Netherlands Institute for Radio Astronomy (ASTRON) (author)
  • Ivashina, Marianna,1975Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)ivashina (author)
  • Loose, G. M.Netherlands Institute for Radio Astronomy (ASTRON) (author)
  • Lucero, D. M.Virginia Polytechnic Institute and State University (Virginia Tech) (author)
  • Maan, Y.Netherlands Institute for Radio Astronomy (ASTRON) (author)
  • Mika,Netherlands Institute for Radio Astronomy (ASTRON) (author)
  • Moss, V. A.Netherlands Institute for Radio Astronomy (ASTRON),The University of Sydney,Commonwealth Scientific and Industrial Research Organisation (CSIRO) (author)
  • Mulder, H.Netherlands Institute for Radio Astronomy (ASTRON) (author)
  • Oostrum, L. C.Universiteit Van Amsterdam,University of Amsterdam,Netherlands Institute for Radio Astronomy (ASTRON) (author)
  • Ruiter, MarkNetherlands Institute for Radio Astronomy (ASTRON) (author)
  • Van Der Schuur, D.Netherlands Institute for Radio Astronomy (ASTRON) (author)
  • Smits, R.Netherlands Institute for Radio Astronomy (ASTRON) (author)
  • Vermaas, N.Netherlands Institute for Radio Astronomy (ASTRON) (author)
  • Vohl, D.Netherlands Institute for Radio Astronomy (ASTRON) (author)
  • Ziemke, J.Rijksuniversiteit Groningen,University of Groningen,Netherlands Institute for Radio Astronomy (ASTRON) (author)
  • Netherlands Institute for Radio Astronomy (ASTRON)Universiteit Van Amsterdam (creator_code:org_t)

Related titles

  • In:Astronomy and Astrophysics: EDP Sciences6500004-63611432-0746

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