Results 81 to 90 of about 1,204,542 (190)
Detectability of gamma-ray emission from classical novae with
Context. Classical novae are expected to emit gamma rays during their explosions. The most important contribution to the early gamma-ray emission comes from the annihilation with electrons of the positrons generated by the decay of 13N and 18F.
F. Senziani +3 more
core +1 more source
The decline and fall of classical novae
We address questions concerning the evolution of classical nova systems through outburst and the time scale for the return to their preoutburst state. Observations indicate that evolution on a purely nuclear burning time scale is not sufficient. We call attention to the sequence of events involving common envelope evolution which naturally occurs ...
J. MacDonald +2 more
openaire +1 more source
Multiwavelength studies of classical novae [PDF]
Classical novae are transient astronomical events resulting from an eruption on the surface of an accreting white dwarf in interacting binary stars, namely cataclysmic variables. These eruptions and their progenitors are ideal astronomical events/objects
Aydi, Elias
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Recurrent novae seem to be a rather inhomogeneous group: T CrB is a binary with a M III companion; U Sco probably has a late dwarf as companion. Three are fast novae; two are slow novae. Some of them appear to have normal chemical composition; others may
Selvelli, Pierluigi, Hack, Margherita
core
Study of key resonances in the 30P(p,γ)31S reaction in classical novae
Among reactions with strong impact on classical novae model predictions, 30P(p,γ)31S is one of the few remained that are worthy to be measured accurately, because of their rate uncertainty, as like as 18F(p,α)15O and 25Al(pγ)26Si.
Meyer A. +35 more
doaj +1 more source
The Nova Synthetic Data Base: A Principal Component/AI Analysis of Novae Synoptic Spectra
The Nova Synthetic Data Base (NSDB) is presented as the first publicly available database of synthetic spectra for classical nova shells, spanning an unprecedented range of physical parameters (e.g., ejecta mass, chemical composition, temperature, and ...
Bruno C. Santos +2 more
doaj +1 more source
KT Eri is a classical nova that went into outburst in 2009. Recent photometric analysis in quiescence indicates a relatively longer orbital period of 2.6 days, so that KT Eri could host a very bright accretion disk during the outburst like in the ...
Izumi Hachisu +2 more
doaj +1 more source
Classical novae and type I X-ray bursts: Challenges for the 21st century
Classical nova explosions and type I X-ray bursts are the most frequent types of thermonuclear stellar explosions in the Galaxy. Both phenomena arise from thermonuclear ignition in the envelopes of accreting compact objects in close binary star systems ...
A. Parikh, J. José, G. Sala
doaj +1 more source
Recurrent Novae, Classical Novae, Symbiotic Novae, and Population II Novae
Light curve analysis of decay phase of nova outburst are summarized. Nova duration is determined by the strong wind mass-loss which depends only on the white dwarf mass. Fast novae correspond very massive white dwarfs and very slow novae correspond almost lower mass limit of white dwarfs.
openaire +2 more sources
On the possible existence of two classes of progenitors for classical novae [PDF]
In a 'fiducial sample' of classical novae for which the distances are established independently of the maximum magnitude vs rate of decline relationship, novae with t2 equal to or less than 12 days are found to be concentrated at low heights above the ...
DELLA VALLE, Massimo +3 more
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