Results 21 to 30 of about 4,008 (285)

Recurrence of Nova Explosions [PDF]

International Astronomical Union Colloquium, 1979
It has been shown by many computations that a nova explosion is triggered by mass accretion onto a white dwarf in a close binary system. Such nova explosions will recur many times in the following way. When a certain amount of hydrogen-rich gas has been accreted on the white dwarf, a hydrogen-shell flash is ignited.
Kyoji Nariai, Ken’ichi Nomoto
openaire   +1 more source

Lepto-hadronic Interpretation of 2021 RS Ophiuchi Nova Outburst

The Astrophysical Journal, 2023
Very-high-energy (VHE; 100 GeV < E ≤ 100 TeV) and high-energy (HE; 100 MeV < E ≤ 100 GeV) gamma rays were observed from the symbiotic recurrent nova RS Ophiuchi (RS Oph) during its outburst in 2021 August by various observatories, such as the High Energy
Agnibha De Sarkar, Nayana A. J., Nirupam Roy, Soebur Razzaque, G. C. Anupama   +4 more
doaj   +1 more source

On a century of extragalactic novae and the rise of the rapid recurrent novae [PDF]

Advances in Space Research, 2020
Novae are the observable outcome of a transient thermonuclear runaway on the surface of an accreting white dwarf in a close binary system. Their high peak luminosity renders them visible in galaxies out beyond the distance of the Virgo Cluster. Over the past century, surveys of extragalactic novae, particularly within the nearby Andromeda Galaxy, have ...
Darnley, MJ, Henze, M
openaire   +2 more sources

Recurrent Novae [PDF]

International Astronomical Union Colloquium, 1988
AbstractAn examination of the existing observational material on all the objects classified as recurrent novae, reveals that only T Pyx, U Sco, T CrB and RS Oph deserve such a classification. We review the properties of outbursts powered by thermonuclear runaways and accretion events and determine their observational consequences.
openaire   +1 more source

On the observability of recurrent nova super-remnants

Monthly Notices of the Royal Astronomical Society, 2023
ABSTRACTThe nova super-remnant (NSR) surrounding M 31N 2008-12a (12a), the annually erupting recurrent nova (RN), is the only known example of this phenomenon. As this structure has grown as a result of frequent eruptions from 12a, we might expect to see NSRs around other RNe; this would confirm the RN–NSR association and strengthen the connection ...
M W Healy-Kalesh, M J Darnley, É J Harvey, C M Copperwheat, P A James, T Andersson, M Henze, T J O’Brien   +7 more
openaire   +3 more sources

DUAL MOBILITY CUP CEMENTED INTO POROUS TRABECULAR METAL SHELL DURING REVISION TOTAL HIP ARTHROPLASTY [PDF]

Journal of IMAB, 2023
Revision total hip arthroplasty (RTHA) is a challenging procedure when we speak about acetabular defects and recurrent instability. There are multiple reasons like the number of previous revisions, implant position, bone quality, patient characteristics ...
Maksim Zagorov, Svetoslav Dobrilov, Kalin Mihov   +2 more
doaj   +1 more source

The Behavior of Novae Light Curves Before Eruption [PDF]

, 2009
In 1975, E. R. Robinson conducted the hallmark study of the behavior of classical nova light curves before eruption, and this work has now become part of the standard knowledge of novae.
Alcock, Alcock, Alksne, Anderson, Andrew C. Collazzi, Anonymous, Apriamashvili, Arne A. Henden, Ashley Pagnotta, Becker, Beer, Bertaud, Bertiau, Beyer, Bradley E. Schaefer, Bruch, Bruch, Campbell, Campbell, Dinnerstein, Downes, Efremov, Fehrenbach, Fekel, Gessner, Götz, Hassel, Herbig, Hinderer, Hoffleit, Hoffmeister, Honeycutt, Hopp, Kafka, Kałużny, King, Klaus Löchel, Knigge, Kukarkin, Kukarkin, Kürster, Leavitt, Leibowitz, Liller, Liller, Limin Xiao, Lowne, Löchel, Meinunger, Mennickent, Monet, Newsom, Nielsen, Osada, Parenago, Parenago, Peltier, Peltier, Peter Kroll, Pickering, Pickering, Pogson, Prentice, Retter, Rosino, Samus, Sanduleak, Schaefer, Schaefer, Schaefer, Schaefer, Schaefer, Schaefer, Schaefer, Schweitzer, Semeniuk, Shafter, Shafter, Shapley, Shen, Sherrington, Shugarov, Solomon, Starrfield, Tamm, Thomas, Uthas, van Genderen, van Schewick, van Teeseling, Wachmann, Wade, Warner, Warner, Warner, Warner, Wenzel, Whipple, Whipple, Whipple, Xiao, Yonehara   +101 more
core   +3 more sources

A spectroscopic survey of recurrent novae at minimum [PDF]

International Astronomical Union Colloquium, 1990
From 1986 to 1988 optical spectroscopy near minimum of all then established recurrent novae (excluding recurrent X-ray novae such as V616 Mon and V404 Cyg) was carried out with the 3.6 m and 1.5 m telescopes of ESO, using EFOSC with CCD and the Cassegrain spectrograph with CCD or IDS, respectively.
H.W. Duerbeck, W.C. Seitter
openaire   +1 more source

Symbiotic Star T CrB as an Extreme SU UMa–type Dwarf Nova

The Astrophysical Journal Letters, 2023
T CrB is a symbiotic recurrent nova that exhibits quiescent and active phases between its classical nova eruptions. The statistical properties of these active phases have been poorly studied thus far. Because of that their nature remained unknown.
Krystian Iłkiewicz, Joanna Mikołajewska, Kiril A. Stoyanov   +2 more
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, Barry, Barsukova, Bode, Di Mille, Downes, E. O. Ofek, Ferrarese, Gal-Yam, Henze, Henze, Jose, Kasliwal, Kasliwal, Kasliwal, Kasliwal, Kasliwal, Kasliwal, Kasliwal, Kasliwal, Kasliwal, Kasliwal, Kasliwal, Kasliwal, Kasliwal, Kogure, Kraus, Lee, M. M. Kasliwal, McLaughlin, Ovcharov, Payne-Gaposchkin, Pietsch, R. Quimby, Rau, S. B. Cenko, S. R. Kulkarni, Schaefer, Schlegel, Shafter, Shafter, Shafter, Shen, Strope, Townsley, Valcheva, van den Bergh, Yaron   +47 more
core   +2 more sources