Results 1 to 10 of about 13,321 (151)
Search for 22Na in novae supported by a novel method for measuring femtosecond nuclear lifetimes [PDF]
Nature Communications, 2023 Classical novae are thermonuclear explosions in stellar binary systems, and important sources of 26Al and 22Na. While γ rays from the decay of the former radioisotope have been observed throughout the Galaxy, 22Na remains untraceable.
Chloé Fougères +61 more
doaj +2 more sources
The Progenitor Systems of Classical Novae in M31 [PDF]
The Astrophysical JournalWe present the first characterization of the statistical relationship between a large sample of novae in M31 and their progenitor stellar populations in the form of a delay time distribution.
C. S. Abelson +6 more
doaj +2 more sources
SwiftX‐Ray Observations of Classical Novae
Astrophysical Journal, 2007 The new gamma-ray burst mission Swift has obtained pointed observations of several classical novae in outburst. We analyzed all the observations of classical novae from the Swift archive up to 30 June, 2006.
Jan-Uwe Ness +2 more
exaly +3 more sources
Gamma-ray signatures of classical novae
AIP Conference Proceedings, 2001 The role of classical novae as potential gamma-ray emitters is reviewed, on the basis of theoretical models of the gamma-ray emission from different nova types.
Margarita Hernanz
exaly +4 more sources
Gap Transients Interacting with Circumstellar Medium
Universe, 2022 In the last 20 years, modern wide-field surveys discovered a new class of peculiar transients, which lie in the luminosity gap between standard supernovae and classical novae. These transients are often called “intermediate luminosity optical transients”
Yongzhi Cai +3 more
doaj +1 more source
Ultraviolet and X-ray Light-Curves of Novae Observed by the Neil Gehrels Swift Observatory
Universe, 2022 With rapid response capabilities, and a daily planning of its observing schedule, the Neil Gehrels Swift Observatory is ideal for monitoring transient and variable sources.
Kim L. Page +2 more
doaj +1 more source
Theory of Nova Outbursts and Type Ia Supernovae
Acta Polytechnica CTU Proceedings, 2015 We briefly review the current theoretical understanding of the light curves of novae. These curves exhibit a homologous nature, dubbed the universal decline law, and when time-normalized, they almost follow a single curve independently of the white dwarf
M. Kato, I. Hachisu
doaj +1 more source
Theoretical Light-curve Models of the Symbiotic Nova CN Cha—Optical Flat Peak for 3 Yr
The Astrophysical Journal, 2023 CN Cha is a slow symbiotic nova characterized by a 3 yr long optical flat peak followed by a rapid decline. We present theoretical light curves for CN Cha, based on hydrostatic approximation, and estimate the white-dwarf (WD) mass to be ∼0.6 M _☉ for a ...
Mariko Kato, Izumi Hachisu
doaj +1 more source
Discovery of a new photometric sub-class of faint and fast classical novae [PDF]
, 2010 We present photometric and spectroscopic follow-up of a sample of extragalactic novae discovered by the Palomar 60-inch telescope during a search for "Fast Transients In Nearest Galaxies" (P60-FasTING). Designed as a fast cadence (1-day) and deep (g < 21
A. Rau +47 more
core +2 more sources
Understanding the cosmic abundance of 22Na: Lifetime measurements in 23Mg [PDF]
EPJ Web of Conferences, 2023 Simulations of explosive nucleosynthesis in novae predict the production of 22Na, a key astronomical observable to constrain nova models. Its gamma-ray line at 1.275 MeV has not yet been observed by the gamma-ray space telescopes.
Fougères C. +3 more
doaj +1 more source