We present the analysis of publicly available NuSTAR, Suzaku, and XMM–Newton
observations of the symbiotic recurrent nova T CrB covering the 2006.77–2022.66 yr period …

T CrB is a symbiotic recurrent nova that exhibits quiescent and active phases between its
classical nova eruptions. The statistical properties of these active phases have been poorly …

ABSTRACT X-ray-emitting symbiotic stars exhibit a variety of spectral shapes classified as α,
β, γ, δ, and β/δ types, which have been attributed to different phenomena such as …

Context. The Be star ζ Tau was recently reported to be a γ Cas analog; that is, it displays an
atypical (bright and hard) X-ray emission. The origin of these X-rays remains debated. Aims …

Abstract Cataclysmic Variables (CVs) are compact binaries with white dwarf (WD) primaries.
CVs and other accreting WD binaries (AWBs) are useful laboratories for studying accretion …

We present early spectral observations of the very slow Galactic nova Gaia22alz, over its
gradual rise to peak brightness that lasted 180 d. During the first 50 d, when the nova was …

The recurrent nova (RN) V3890 Sgr was observed during the seventh day after the onset of
its most recent outburst, with the Chandra ACIS-S camera and High Energy Transmission …

Symbiotic binaries sometimes hide their symbiotic nature for significant periods of time.
There is mounting observational evidence that, in symbiotics that are powered solely by the …

Estimates of the accretion rate in symbiotic recurrent novae (RNe) often fall short of
theoretical expectations by orders of magnitude. This apparent discrepancy can be resolved …

Multi-epoch Chandra and XMM-Newton observations of the symbiotic system R Aquarii (R
Aqr) spanning 22 yr are analysed by means of a reflection model produced by an accretion …