Results 51 to 60 of about 1,398,922 (322)

A Nova Outburst Powered by Shocks [PDF]

, 2017
Classical novae are runaway thermonuclear burning events on the surfaces of accreting white dwarfs in close binary star systems, sometimes appearing as new naked-eye sources in the night sky.
Beloborodov, Andrei M., Chomiuk, Laura, Finzell, Thomas, Holoien, Thomas W. -S., Itoh, Hiroshi, Kafka, Stella, Kochanek, Christopher S., Li, Kwan-Lok, Luckas, Paul J., Metzger, Brian D., Nelson, Thomas, Prieto, Jose L., Shappee, Benjamin J., Strader, Jay, Thompson, Todd A., Vurm, Indrek   +15 more
core   +1 more source

The UBV Color Evolution of Classical and Symbiotic Novae

Acta Polytechnica CTU Proceedings, 2015
We identified a general course of classical nova outbursts in the B − V vs. U − B diagram. It has been reported that novae show spectra similar to A–F supergiants near optical light maximum.
I. Hachisu, M. Kato
doaj   +1 more source

First Direct Measurement of the ^{17}O(p,\gamma)^{18}F Reaction Cross-Section at Gamow Energies for Classical Novae

, 2012
Classical novae are important contributors to the abundances of key isotopes, such as the radioactive ^{18}F, whose observation by satellite missions could provide constraints on nucleosynthesis models in novae.
Aliotta, M., Anders, M., Bemmerer, D., Broggini, C., Caciolli, A., Campeggio, M., Corvisiero, P., DiLeva, A., Elekes, Z., Formicola, A., Fülöp, Zs., Gervino, G., Guglielmetti, A., Gustavino, C., Gyürky, Gy., Imbriani, G., Junker, M., Laubenstein, M., Marta, M., Menegazzo, R., Napolitani, E., Prati, P., Rigato, V., Roca, V., Salvo, C., Scott, D. A., Somorjai, E., Straniero, O., Strieder, F., Szücs, T., Terrasi, F., Trezzi, D.   +31 more
core   +1 more source

When a Nova Becomes Old

Acta Polytechnica CTU Proceedings, 2015
Here we present the preliminary results of a project aimed at unveiling the nature of classical novae decades after their eruption. The ultimate goal of this project is to describe the population of cataclysmic variables which give rise to nova ...
A. Ederoclite, C. Tappert, L. Schmidtobreick, N. Vogt   +3 more
doaj   +1 more source

Spectra of V1405 Cas at the Very Beginning Indicate a Low-mass ONeMg White Dwarf Progenitor

The Astrophysical Journal, 2023
The lowest possible mass of ONeMg white dwarfs (WDs) has not been clarified despite its importance in the formation and evolution of WDs. We tackle this issue by studying the properties of V1405 Cas (Nova Cassiopeiae 2021), which is an outlier given a ...
Kenta Taguchi, Keiichi Maeda, Hiroyuki Maehara, Akito Tajitsu, Masayuki Yamanaka, Akira Arai, Keisuke Isogai, Masaaki Shibata, Yusuke Tampo, Naoto Kojiguchi, Daisaku Nogami, Taichi Kato   +11 more
doaj   +1 more source

Swift X-ray Observations of Classical Novae

, 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.
A. Retter, Burrows D. N., D. Burrows, G. J. Schwarz, Iijima T., J. H. M. M. Schmitt, J. P. Osborne, J.‐U. Ness, Kiss L. L., Lane B. F., Lyke J. E., Munari U., N. Gehrels, Ness J.-U., Perry R. B., Puetter R. C., Rauch T., S. Starrfield, Siviero A., van den Bergh S.   +19 more
core   +1 more source

Internal shocks from variable outflows in classical novae [PDF]

Monthly notices of the Royal Astronomical Society, 2019
We present one-dimensional hydrodynamical simulations including radiative losses, of internal shocks in the outflows from classical novae, to explore the role of shocks in powering multiwavelength emission from radio to gamma-ray wavelengths ...
E. Steinberg, B. Metzger
semanticscholar   +1 more source

The Early Palomar Program (1950-1955) for the Discovery of Classical Novae in M81: Analysis of the Spatial Distribution, Magnitude Distribution, and Distance Suggestion [PDF]

, 1999
Data obtained in the 1950-1955 Palomar campaign for the discovery of classical novae in M81 are set out in detail. Positions and apparent B magnitudes are listed for the 23 novae that were found.
Allan Sandage, Buscombe W., David R. Zurek, Della Valle M., Della Valle M., Hatano K., Holmberg E., Kraft R. P., Kraft R. P., McLaughlin D. B., Metcalfe N., Michael M. Shara, Moses R. N., Prialnik D., Prialnik D., Reimers D., Schmidt Th., Starrfield S., Tully R. B., Weidemann V., Weidemann V.   +20 more
core   +3 more sources

Gamma-ray Novae: Rare or Nearby?

, 2016
Classical Novae were revealed as a surprise source of gamma-rays in Fermi LAT observations. During the first 8 years since the LAT was launched, 6 novae in total have been detected to > 5 sigma in gamma-rays, in contrast to the 69 discovered optically in
Brown, Anthony M., Chadwick, Paula M., Cotter, Garret, Morris, Paul J.   +3 more
core   +1 more source

X-ray monitoring of classical novae in the central region of M 31. II. Autumn and winter 2007/2008 and 2008/2009 [PDF]

, 2010
[Abridged] Classical novae (CNe) represent the major class of supersoft X-ray sources (SSSs) in the central region of our neighbouring galaxy M 31. We performed a dedicated monitoring of the M 31 central region with XMM-Newton and Chandra between Nov ...
A. Rau, Alksnis, An, Ansari, Baernbantner, Balucinska-Church, Beaton, Bode, Bode, Bogdán, Burwitz, Burwitz, Capaccioli, Catalán, Ciardullo, Ciardullo, D. H. Hartmann, D. Hatzidimitriou, Darnley, Darnley, Della Valle, Della Valle, Della Valle, Della Valle, di Mille, Dimai, F. Haberl, Fiaschi, Fiaschi, Filippenko, Filippenko, Filippenko, G. Sala, Gallagher, Greiner, Hachisu, Hachisu, Hachisu, Hatano, Hatzidimitriou, Henze, Henze, Henze, Henze, Henze, Henze, Henze, Holland, Hornoch, Immler, José, Kaaret, Kahabka, Kahabka, Kong, Lang, Livio, M. Della Valle, M. Henze, M. Hernanz, Metropolis, Nedialkov, Nelson, Nelson, Ness, Ness, Orio, Orio, Orio, Osborne, Ovcharov, Page, Petz, Pietsch, Pietsch, Pietsch, Pietsch, Pietsch, Pietsch, Pietsch, Pietsch, Pietsch, Pietsch, Quimby, Quimby, Rau, Rauch, Rauch, Ries, Riffeser, Ritter, Sala, Salpeter, Schaefer, Schaefer, Schlegel, Shafter, Shafter, Shafter, Shafter, Shafter, Shanley, Sharov, Shen, Smirnova, Smirnova, Stanek, Stark, Starrfield, Stiele, Stiele, Trinchieri, Trudolyubov, Truran, Tuchman, V. Burwitz, Valcheva, van Rossum, Voss, W. Pietsch, Walterbos, Williams, Williams, Wilms, Yaron   +124 more
core   +3 more sources