A MeerKAT survey of nearby dwarf novae: I. New detections
ABSTRACT A programme to search for radio emission from dwarf-novae-type cataclysmic variables was conducted with the South African MeerKAT radio telescope. The dwarf novae RU Pegasi, V426 Ophiuchi, and IP Pegasi were detected during outburst at L band (1284 MHz central frequency). Previously, only one cataclysmic variable was radio-detected at a frequency this low. We now bring the number to four. With these three newly found radio-emitters, the population of dwarf novae confirmed to be radio-emitting at any frequency reaches 10 systems. We found that the radio luminosity is correlated with the optical luminosity. For V426 Ophiuchi and RU Pegasi we found a radio decline contemporary with the outburst’s optical decline. The peak radio luminosity of dwarf novae in outburst is very similar to that of novalike Cataclysmic Variables and no correlation with orbital period is seen.
Authors
- Elmar Körding
- Ian Heywood (ORCID: https://orcid.org/0000-0001-6864-5057)
- P. Groot (ORCID: https://orcid.org/0000-0002-4488-726X)
- G. R. Sivakoff (ORCID: https://orcid.org/0000-0001-6682-916X)
- D. R. Williams (ORCID: https://orcid.org/0000-0001-7361-0246)
- D. L. Coppejans (ORCID: https://orcid.org/0000-0001-5126-6237)
- C. Knigge (ORCID: https://orcid.org/0000-0002-1116-2553)
- J. C. A. Miller‐Jones (ORCID: https://orcid.org/0000-0003-3124-2814)
- P. A. Woudt (ORCID: https://orcid.org/0000-0002-6896-1655)
- R. P. Fender
- J. Kersten (ORCID: https://orcid.org/0000-0002-9121-5749)
Institutions
- Radboud University Nijmegen (NL)
- University of Alberta (CA)
- University of Cape Town (ZA)
- Rhodes University (ZA)
- University of Manchester (GB)
- University of Warwick (GB)
- University of Oxford (GB)
- South African Radio Astronomy Observatory (ZA)
- Astronomical Observatory (RS)
- International Centre for Radio Astronomy Research (AU)
- University of Southampton (GB)
- Inter-university Institute for Data Intensive Astronomy (ZA)
Publication Details
- Journal
- Monthly Notices of the Royal Astronomical Society
- Published
- 2025-04-03
- DOI
- https://doi.org/10.1093/mnras/staf556
- Citations
- 1
- Primary Topic
- Astrophysical Phenomena and Observations
- Type
- article
- Field-Weighted Citation Impact
- 1.15
Funders
- National Science Foundation
- California Institute of Technology
- European Space Agency
- National Research Foundation
- University of Pretoria
- Trinity College Dublin
- University of the Western Cape
- Universiteit Stellenbosch
- Cape Peninsula University of Technology
- University of Cape Town
- Stockholms Universitet
- Deutsches Elektronen-Synchrotron
- Institut National de Physique Nucléaire et de Physique des Particules