Results 61 to 70 of about 1,204,542 (190)

A Shocking Shift in Paradigm for Classical Novae

open access: yes, 2019
The discovery of GeV gamma-rays from classical novae has led to a reassessment of these garden-variety explosions, and highlighted their importance for understanding radiative shocks, particle acceleration, and dust formation in more exotic, distant ...
Linford, Justin   +12 more
core   +2 more sources

The 30P(p, γ)31S reaction in classical novae: progress and prospects

open access: yesAIP Advances, 2014
The unknown thermonuclear rate of the 30P(p, γ)31S reaction at classical-nova temperatures currently prohibits the accurate modeling of nova nucleosynthesis in the A ⩾ 30 region.
C. Wrede
doaj   +1 more source

Shell Observations of Classical Novae

open access: yes, 2021
We present shell observations of some classical novae from the Turkish National Observatory. We reobserved them to image their faint shells a long time after their outbursts.
SAYGAÇ, AHMET TALAT   +1 more
core  

Detection of a Molecular Hydrogen Envelope around Nova GK Persei

open access: yesThe Astrophysical Journal Letters
The eruption of Nova Persei 1901 (GK Per) occurred 125 yr ago; remarkably, it still holds major surprises. Using data from the Spectro-Photometer for the History of the Universe, Epoch of Reionization, and Ices Explorer (SPHEREx), we find that it has a ...
D. P. K. Banerjee   +6 more
doaj   +1 more source

Optical studies of classical novae in outburst [PDF]

open access: yesInternational Astronomical Union Colloquium, 1990
AbstractA nova is followed optically from preoutburst to postoutburst appearance. Photospheric and atmospheric observational data are explained qualitatively through the energy budget, apparent in super-Eddington, Eddington, and sub-Eddington states, and the particle fluxes, according to their role in Grotrian’s model.
openaire   +1 more source

Visite de l'exposition « Naissance de la sculpture gothique. Saint-Denis, Paris, Chartres (1135-1150) »

open access: yes, 2018
L'association Artes Novae organise une visite de l'exposition « Naissance de la sculpture gothique. Saint-Denis, Paris, Chartres, 1135-1150 » (10 octobre 2018-21 janvier 2019) conduite par Philippe Plagnieux, professeur en histoire de l'art médiéval ...
Artes Novae
core  

The space density of classical novae in the galactic disk [PDF]

open access: yes, 1993
A new determination of the space density of classical novae is presented. Comparison of the properties of nova populations in M3 1, the Galaxy and the LMC, permits to set the outburst rate of novae belonging to the disk of the Galaxy to 5±2.5 novae per ...
DELLA VALLE, Massimo, Duerbeck, H. W.
core  

Classical Novae – Before and After Outburst [PDF]

open access: yesInternational Astronomical Union Colloquium, 1988
Classical nova (CN) and dwarf nova (DN) systems have the same binary components (a low-mass main sequence star and a white dwarf) and the same orbital periods. An important question that therefore arises is: are these systems really different ? (and if so, what is the fundamental difference ?) or, are these the same systems, metamorphosing from one ...
openaire   +1 more source

Rencontre avec Aurélia Cohendy autour de l'exposition "Quand la peinture était dans les livres"

open access: yes, 2018
L’association Artes Novae a le plaisir de vous inviter à une rencontre avec Aurélia Cohendy autour de l’exposition « Quand la peinture était dans les livres » dont elle a assuré le commissariat avec Magali Vène et qui est présentée à la Bibliothèque d ...
Artes Novae
core  

Orbital Period Changes of Recurrent Nova T Pyxidis Demonstrate that Mejecta ≫ 11.3 × Maccreted and that It Is Not a Type Ia Supernova Progenitor

open access: yesThe Astrophysical Journal
Recurrent nova (RN) T Pyxidis (T Pyx) has a complex history of mass accreting onto and ejection from the white dwarf, with a classical nova eruption around 1866 kick-starting an RN-phase with six RN eruptions from 1890–2011. T Pyx is a primary progenitor
Bradley E. Schaefer
doaj   +1 more source

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