Results 31 to 40 of about 4,179 (318)

Recurrent Novae And Type Ia Supernova Progenitors

, 2012
We investigated two types of stellar explosions, recurrent novae (RNe) and Type Ia supernovae (SNe Ia). SNe Ia are the most useful distance markers in astrophysics, but we do not know the identity of their progenitor systems. RNe are good progenitor candidates that consist of a white dwarf (WD) that accretes material from a companion star. The material
Ashley Pagnotta
openalex   +2 more sources

Gamma rays from nebulae around recurrent novae

Journal of High Energy Astrophysics, 2023
Novae were discovered to emit transient gamma rays during the period of several days to a few weeks after initial explosion, indicating presence of acceleration processes of particles in their expanding shells. In the case of recurrent novae, electrons can be in principle accelerated in the nova shells for the whole recurrence period of nova producing ...
W. Bednarek, J. Sitarek
openaire   +2 more sources

X-ray observations of classical novae. Theoretical implications [PDF]

, 2009
Detection of X-rays from classical novae, both in outburst and post-outburst, provides unique and crucial information about the explosion mechanism. Soft X-rays reveal the hot white dwarf photosphere, whenever hydrogen (H) nuclear burning is still on and
Balman, Balman, Bode, Bode, Cropper, Dobrotka, Drake, Gutiérrez, Gómez-Gomar, Gónzalez-Riestra, Hachisu, Hachisu, Hachisu, Henze, Hernanz, Hernanz, Hernanz, Hernanz, José, Kato, Kato, Krautter, Leibowitz, Livio, Livio, Lloyd, Nelson, Ness, Ness, Ness, Ness, Ness, Ness, Orio, Orio, Orio, Orio, Pietsch, Prialnik, Sala, Sala, Sala, Sala, Shanley, Shore, Sokoloski, Starrfield, Starrfield, Tatischeff, Tuchman, van Rossum, Yaron, Ögelman, Ögelman   +53 more
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Bipolar recurrent nova outbursts - I. Hydrodynamic models [PDF]

Monthly Notices of the Royal Astronomical Society, 1993
We describe hydrodynamic models of bipolar outbursts in recurrent nova systems containing a red giant with a dense wind. Two mechanisms are investigated for the production of the bipolarity observed in the outbursts of some such systems - a model in which the outburst occurs as a point explosion in an anisotropic wind, and one in which the wind is ...
LLOYD, HM, BODE, MF, OBRIEN, TJ, KAHN, FD   +3 more
openaire   +2 more sources

Snowflakes in a Furnace: Formation of CO and Dust in a Recurrent Nova Eruption

The Astrophysical Journal Letters, 2023
We report the detection of carbon monoxide (CO) and dust, formed under hostile conditions, in recurrent nova V745 Sco about 8.7 days after its 2014 outburst. The formation of molecules or dust has not been recorded previously in the ejecta of a recurrent
D. P. K. Banerjee, C. E. Woodward, V. Joshi, A. Evans, F. M. Walter, G. H. Marion, E. Y. Hsiao, N. M. Ashok, R. D. Gehrz, S. Starrfield   +9 more
doaj   +1 more source

The 2011 Outburst of Recurrent Nova T Pyx: X-ray Observations Expose the White Dwarf Mass and Ejection Dynamics [PDF]

, 2014
The recurrent nova T Pyx underwent its sixth historical outburst in 2011, and became the subject of an intensive multi-wavelength observational campaign.
Chomiuk, Laura, Krauss, Miriam I., Kuulkers, Erik, Mioduszewski, Amy J., Mukai, Koji, Nelson, Thomas, Osborne, Julian P., Page, Kim L., Roy, Nirupam, Rupen, Michael P., Sokoloski, J. L., Weston, Jennifer   +11 more
core   +3 more sources

The nova KT Eri Is a recurrent nova with a recurrence time-scale of 40–50 yr

Monthly Notices of the Royal Astronomical Society, 2022
ABSTRACT KT Eridani was a very fast nova in 2009 peaking at V  = 5.42 mag. We marshal large data sets of photometry to finally work out the nature of KT Eri. From the TESS light curve, as confirmed with our radial velocity curve, we find an orbital period of 2.61595 d.
Bradley E Schaefer, Frederick M Walter, Rebekah Hounsell, Yael Hillman   +3 more
openaire   +2 more sources

The RS Oph Outburst of 2021 Monitored in X-Rays with NICER

The Astrophysical Journal, 2023
The 2021 outburst of the symbiotic recurrent nova RS Oph was monitored with the Neutron Star Interior Composition Explorer Mission (NICER) in the 0.2–12 keV range from day one after the optical maximum, until day 88, producing an unprecedented, detailed ...
Marina Orio, Keith Gendreau, Morgan Giese, Gerardo Juan M. Luna, Jozef Magdolen, Tod E. Strohmayer, Andy E. Zhang, Diego Altamirano, Andrej Dobrotka, Teruaki Enoto, Elizabeth C. Ferrara, Richard Ignace, Sebastian Heinz, Craig Markwardt, Joy S. Nichols, Michael L. Parker, Dheeraj R. Pasham, Songpeng Pei, Pragati Pradhan, Ron Remillard, James F. Steiner, Francesco Tombesi   +21 more
doaj   +1 more source

The Wendelstein Calar Alto Pixellensing Project (WeCAPP): the M31 Nova catalogue

, 2011
We present light curves from the novae detected in the long-term, M31 monitoring WeCAPP project. The goal of WeCAPP is to constrain the compact dark matter fraction of the M31 halo with microlensing observations. As a by product we have detected 91 novae
Baernbantner, O., Bender, R., Fliri, J., Goessl, C., Hopp, U., Lee, C. -H., Ries, C., Riffeser, A., Seitz, S.   +8 more
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Neon Novae, Recurrent Novae, and Type I Supernovae [PDF]

, 1991
Over the past few years, we have been investigating the effects of accretion onto massive white dwarfs and its implications for their growth in mass toward the Chandrasekhar limit, in attempts to identify a possible relationship between SN I and novae.
S. Starrfield, W. M. Sparks, J. W. Truran, G. Shaviv   +3 more
openaire   +1 more source