Results 111 to 120 of about 85,351 (144)

State-Dependent Optical Flickering in the Recurrent Nova T Coronae Borealis from TESS Photometry

Universe
T Coronae Borealis (T CrB) is a symbiotic recurrent nova that is approaching its next thermonuclear eruption after a long super-active accretion state and a pre-eruption dip state.
Xiaowan Zhang, Songpeng Pei, Xiaoqin Ren, Mingyue Li   +3 more
doaj   +1 more source

Optical observations of 'hot' novae returning to quiescence

, 2020
© 2018 The Author(s). We have monitored the return to quiescence of novae previously observed in outburst as supersoft X-ray sources, using optical photometry of the intermediate polar (IP)V4743 Sgr and the candidate IP V2491 Cyg, and optical ...

core  

The symbiotic binary ZZ CMi: Intranight variability and suggested outbursting nature [PDF]

We present photometric and spectral observations of the symbiotic star ZZ CMi. We detect intranight variability—flickering and smooth variations in U band. The amplitude of the flickering is about (Formula presented.) mag in U band.
Kostov, A, Martí, J, Bode, MF, Nikolov, YM, Boeva, SS, Kurtenkov, A, Tomov, N, Luque-Escamilla, PL, Zamanov, RK, Nikolov, G, Latev, G, Stoyanov, KA   +11 more
core   +1 more source

Pre-nova Observations of T CrB: A View from the CHARA Array

The Astrophysical Journal Letters
T Coronae Borealis (T CrB, HD 143454) is a symbiotic recurrent nova consisting of a red giant and white dwarf with recent eruptions in 1866 and 1946 and an anticipated eruption in the mid-2020s.
Ryan Norris, Narsireddy Anugu, Thomas Gaudin, Magdalena Otulakowska-Hypka, Fabian Kaczmarek, Cameron Caruso, Cody Gustafson, Andrew Kotowski, Rebecca Proni, Nirupam Roy, Fabien Baron, Dipankar P.K Banerjee, Dana K. Baylis-Aguirre, Michelle J. Creech-Eakman, Justin Linford, Alexandre Gallenne, Joanna Mikołajewska, John D. Monnier, Denis Mourard, Ulisse Munari, Nicolas Nardetto, Rachael M. Roettenbacher, Jennifer L Sokoloski, Montana Williams, C. E. Woodward, Stefan Kraus, Jean-Baptiste Le Bouquin, Sorabh Chhabra, Isabelle Codron, Jacob Ennis, Tyler Gardner, Mayra Gutierrez, Noura Ibrahim, Cyprien Lanthermann, Benjamin R. Setterholm, Christopher D. Farrington, Olli Majoinen, Norm Vargas, Douglas R. Gies, Gail H. Schaefer, Theo ten Brummelaar   +40 more
doaj   +1 more source

Binary Parameters for the Recurrent Nova T Coronae Borealis

The Astrophysical Journal
T CrB is among the brightest novae. It is recurrent with outbursts happening approximately every 80 yr. The next outburst is imminent, expected in 2025. The T CrB binary consists of an M4 III red giant (RG) secondary and a white dwarf (WD) primary.
Kenneth H. Hinkle, Pranav Nagarajan, Francis C. Fekel, Joanna Mikołajewska, Oscar Straniero, Matthew W. Muterspaugh   +5 more
doaj   +1 more source

The Place of Recurrent Novae among the Symbiotic Stars

, 2008
The observational properties of recurrent novae indicate that they can be divided into two subclasses:systems with a dwarf and a red giant secondary, respectively. The second type -- which includes RS Oph -- bears many similarities to symbiotic stars.
openaire   +2 more sources

High energy emission of symbiotic recurrent novae: RS OPH and V407 CYG

, 2011
Recurrent novae occurring in symbiotic binaries are candidate sources of high energy photons, reaching GeV energies. Such emission is a consequence of particle acceleration leading to pion production.
Tatischeff, V., Hernanz, M.
core  

novae-angliae

, 1959
Symphyotrichum novae-angliae (Linnaeus) G.L.
7730 F.H. Sargent
core  

novae-angliae

, 1961
Symphyotrichum novae-angliae (Linnaeus) G.L.
7794 F.H. Sargent
core  

Is the symbiotic recurrent nova T CrB late?

Opis vira z dne 10. 10. 2025.
Merc, Jaroslav, Wyrzykowski, Łukasz, Beck, Paul G, Mikołajczyk, P J, Kotysz, Krzysztof, Zieliński, P, Zola, Staszek, Bronikowski, Mateusz, Japelj, Jure, Mihelčič, Matej   +9 more
openaire   +1 more source