We present the results of MeerKAT radio observations of eleven nearby novalike cataclysmic variables. We have detected radio emission from IM Eri, RW Sex, V3885 Sgr and V603 Aql. While RW Sex, V3885 Sgr and V603 Aql had been previously detected, this is the first reported radio detection of IM Eri. Our observations have doubled the sample of non-magnetic CVs with sensitive radio data. We observe that at our radio detection limits, a specific optical luminosity $\gtrsim 2.2\times 10^{18}$ erg/s/Hz (corresponding to $M_V \lesssim 6.0$) is required to produce a radio detection. We also observe that the X-ray and radio luminosities of our detected novalikes are on an extension of the $L_{X} \propto L_{R}^{\sim 0.7}$ power law originally proposed for non-pulsating neutron star low-mass X-ray binaries. We find no other correlations between the radio emission and emission in other wavebands or any other system parameters for the existing sample of radio-detected non-magnetic CVs. We measure in-band (0.9-1.7 GHz) radio spectral indices that are consistent with reports from earlier work. Finally, we constructed broad spectral energy distributions for our sample from published multi-wavelength data, and use them to place constraints on the mass transfer rates of these systems.

中文翻译：

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MeerKAT 对附近类似新星的灾难性变量的调查

我们展示了 MeerKAT 无线电观测对附近 11 个类似新星的巨变变量的观测结果。我们检测到来自 IM Eri、RW Sex、V3885 Sgr 和 V603 Aql 的无线电发射。虽然之前已检测到 RW Sex、V3885 Sgr 和 V603 Aql，但这是首次报告的 IM Eri 无线电检测。我们的观察使具有敏感无线电数据的非磁性 CV 样本增加了一倍。我们观察到，在我们的无线电探测极限下，产生无线电探测需要特定的光亮度 $\gtrsim 2.2\times 10^{18}$ erg/s/Hz（对应于 $M_V \lesssim 6.0$）。我们还观察到，我们检测到的类新星的 X 射线和射电光度是 $L_{X} \propto L_{R}^{\sim 0.7}$ 幂律的扩展，最初为非脉动中子星低-mass X 射线二进制文件。对于现有的无线电探测非磁性 CV 样本，我们发现无线电发射与其他波段的发射或任何其他系统参数之间没有其他相关性。我们测量了与早期工作报告一致的带内 (0.9-1.7 GHz) 无线电频谱指数。最后，我们根据已发布的多波长数据为我们的样本构建了宽光谱能量分布，并使用它们来限制这些系统的传质速率。