Measuring the distances to Galactic planetary nebulae (PNe) has been an intractable
problem for many decades. We have now established a robust optical statistical distance …

We present the serendipitous discovery of a new radio-continuum ring-like object
nicknamed Kýklos (J1802–3353), with MeerKAT UHF and L-band observations. The radio …

We present an analytical model of the Σ–D relation for supernova remnants (SNRs) evolving
in a clumpy medium. The model and its approximations were developed using the …

We present an updated and newly compiled radio-continuum data base for Macquarie/AAO/
Strasbourg Hα (MASH) planetary nebulae (PNe) detected in the extant large-scale …

We present 21 new radio-continuum detections at catalogued planetary nebula (PN)
positions in the Large Magellanic Cloud (LMC) using all presently available data from the …

We present a method for distance calibration without using standard fitting procedures.
Instead, we use random resampling to reconstruct the probability density function (PDF) of …

We present ten new radio continuum (RC) detections at catalogued planetary nebula (PN)
positions in the Small Magellanic Cloud (SMC): SMP S6, LIN 41, LIN 142, SMP S13, SMP …

Aims. We investigate and analyze the radio surface brightness to diameter ($\Sigma-D $)
relation for recently detected, bright radio-continuum planetary nebulae (PNe) in the …

Context. The advent of large-scale, high-sensitivity surveys of the Galaxy (2MASS, WISE,
Spitzer, etc.) has allowed detection of a large number of planetary nebulae (PNe), some of …

The models of radio synchrotron emission of supernova remnants (SNRs) imply uniform
density ahead of shock wave, so the evolution of luminosity is usu-ally studied in such an …