We survey our understanding of classical novae—nonterminal, thermonuclear eruptions on
the surfaces of white dwarfs in binary systems. The recent and unexpected discovery of GeV …

X-ray astronomy is the prime available window on astrophysical compact objects: black
holes, neutron stars and white dwarfs. New observational opportunities have led to an …

The classical nova V1974 Cygni (1992) was observed by ROSAT on a total of 18 occasions
from 1992 April 22 until 1993 December 3. All observations were carried out with the PSPC …

We propose a theoretical explanation of absorption/emission line systems in classical novae
based on a fully self-consistent nova explosion model. We found that a reverse shock is …

Growing evidence for shocks in nova outflows includes (1) multiple velocity components in
the optical spectra;(2) hard X-ray emission starting weeks to months after the outburst;(3) an …

We have analysed 350 pointed and serendipitous observations of 108 different classical
and recurrent novae in outburst and in quiescence, contained in the ROSAT archive. One …

Classical novae emit gamma-ray radiation at 511 keV and below (with a cutoff at around 20–
30 keV), related to positron annihilation and its Comptonization in the expanding envelope …

We present the results of ASCA and RXTE observations of the early X-ray emission from the
classical nova V382 Velorum. Its ASCA spectrum was hard (kT∼ 10 keV) with strong (10 23 …

COMPTEL, the imaging telescope on the Compton Gamma-Ray Observatory, has detected
1.809 MeV gamma-ray line emission attributed to radioactive* Al from the nearby Vela …

We present a spectral analysis of the archival X-ray data of classical Nova V1974 Cygni
1992 (Nova Cygni 1992) obtained by the ROSAT Position Sensitive Proportional Counter …