A MeerKAT survey of nearby dwarf novae: I. New detections
arXiv:2503.23838 · doi:10.1093/mnras/staf556
Abstract
A program 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.
arXiv commentAccepted for publication in MNRAS on 2025-03-28. 14 pages, 5 figures
References in corpus (46)
- Gaia Data Release 2. Summary of the contents and survey properties
- The Gaia mission
- Gaia Data Release 3: Summary of the content and survey properties
- Estimating distances from parallaxes. V: Geometric and photogeometric distances to 1.47 billion stars in Gaia Early Data Release 3
- The Man Behind the Curtain: X-rays Drive the UV through NIR Variability in the 2013 AGN Outburst in NGC 2617
- Towards a unified model for black hole X-ray binary jets
- ATLAS: A High-Cadence All-Sky Survey System
- The All-Sky Automated Survey for Supernovae (ASAS-SN) Light Curve Server v1.0
- CASA, the Common Astronomy Software Applications for Radio Astronomy
- The disc instability model of dwarf-novae and low-mass X-ray binary transients
- WSClean: an implementation of a fast, generic wide-field imager for radio astronomy
- The Zwicky Transient Facility: Science Objectives
- Catalogue of cataclysmic binaries, low-mass X-ray binaries and related objects (Seventh edition)
- The Donor Stars of Cataclysmic Variables
- An optimized algorithm for multi-scale wideband deconvolution of radio astronomical images
- Faceting for direction-dependent spectral deconvolution
- Gaia Early Data Release 3: Summary of the contents and survey properties
- A Volume Limited Sample of Cataclysmic Variables from DR2: Space Density and Population Properties
- One Relation for All Wavelengths: The Far-Ultraviolet to Mid-Infrared Milky Way Spectroscopic R(V) Dependent Dust Extinction Relationship
- A review of the disc instability model for dwarf novae, soft X-ray transients and related objects
- Resolving nearby dust clouds
- A transient radio jet in an erupting dwarf nova
- Physical properties of IP Pegasi: an eclipsing dwarf nova with an unusually cool white dwarf
- CubiCal - Fast radio interferometric calibration suite exploiting complex optimisation
- Testing the disk instability model of cataclysmic variables
- A catalogue of cataclysmic variables from 20 years of the Sloan Digital Sky Survey with new classifications, periods, trends and oddities
- An accurate geometric distance to the compact binary SS Cygni vindicates accretion disc theory
- Delays in dwarf novae I: The case of SS Cygni
- Dwarf nova-type cataclysmic variable stars are significant radio emitters
- The Masses and Evolutionary State of the Stars in the Dwarf Nova SS Cygni
- Survey of Period Variations of Superhumps in SU UMa-Type Dwarf Novae. VI: The Sixth Year (2013-2014)
- The reproducible radio outbursts of SS Cygni
- The defining characteristics of Intermediate Polars - the case of three candidate systems
- SW Sextantis in an excited, low state
- A mystery solved: the mass ratio of the dwarf nova EM Cygni
- The systemic velocities of four long-period cataclysmic variable stars
- Analysis of Three SU UMa-Type Dwarf Novae in the Kepler Field
- The case for jets in cataclysmic variables
- Rapid Radio Flaring during an Anomalous Outburst of SS Cyg
- Tricolour: an optimized SumThreshold flagger for MeerKAT
- Spectroscopic properties of the dwarf nova-type cataclysmic variables observed by LAMOST
- A MeerKAT Survey of Nearby Novalike Cataclysmic Variables
- Roche tomography of cataclysmic variables - V. A high-latitude star-spot on RU Pegasi
- Late-outburst radio flaring in SS Cyg and evidence for a powerful kinetic output channel in cataclysmic variables
- EM Cygni: a study of its eclipse timings
- Investigating accretion disk - radio jet coupling across the stellar mass scale