Masses and Metallicity of Nova Envelopes with Carbon-Oxygen (CO) and Oxygen-Neon-Magnesium (ONeMg) White Dwarfs

Тарасова, Т. Н.

doi:10.1007/s10511-019-09597-0

Cited by 5 publications

(2 citation statements)

References 12 publications

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“…Observations of the steady-burning phase following the TNR (Section 2.1.2) imply that ejecta mass scales inversely with WD mass, as theoretically predicted (Wolf et al 2013, Henze et al 2014. However, other observational estimates of ejecta mass consistently yield values more than an order of magnitude greater than theoretically predicted, and show only weak correlations with other nova properties (Roy et al 2012, Tarasova 2019. Much of this discrepancy may be addressed by more accurately and consistently correcting for the effects of clumping and aspherical geometries in the ejecta, which would drive observational estimates downward (Ribeiro et al 2014, Wendeln et al 2017.…”

Section: Early Uv-x-ray Flash From the Thermonuclear Runawaymentioning

confidence: 79%

New Insights into Classical Novae

Chomiuk

Metzger

Shen

2021

Annu. Rev. Astron. Astrophys.

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We survey our understanding of classical novae—nonterminal, thermonuclear eruptions on the surfaces of white dwarfs in binary systems. The recent and unexpected discovery of GeV gamma rays from Galactic novae has highlighted the complexity of novae and their value as laboratories for studying shocks and particle acceleration. We review half a century of nova literature through this new lens, and conclude the following: ▪ The basics of the thermonuclear runaway theory of novae are confirmed by observations. The white dwarf sustains surface nuclear burning for some time after runaway, and until recently, it was commonly believed that radiation from this nuclear burning solely determines the nova's bolometric luminosity. ▪ The processes by which novae eject material from the binary system remain poorly understood. Mass loss from novae is complex (sometimes fluctuating in rate, velocity, and morphology) and often prolonged in time over weeks, months, or years. ▪ The complexity of the mass ejection leads to gamma-ray-producing shocks internal to the nova ejecta. When gamma rays are detected (around optical maximum), the shocks are deeply embedded and the surrounding gas is very dense. ▪ Observations of correlated optical and gamma-ray light curves confirm that the shocks are radiative and contribute significantly to the bolometric luminosity of novae. Novae are therefore the closest and most common interaction-powered transients. Expected final online publication date for the Annual Review of Astronomy and Astrophysics, Volume 59 is September 2021. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

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Section: Early Uv-x-ray Flash From the Thermonuclear Runawaymentioning

confidence: 79%

New Insights into Classical Novae

Chomiuk

Metzger

Shen

2021

Annu. Rev. Astron. Astrophys.

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show abstract

“…Observations of the steady-burning phase following the TNR ( §2.1.2) imply that ejecta mass scales inversely with WD mass, as theoretically predicted (Wolf et al 2013, Henze et al 2014. However, other observational estimates of ejecta mass consistently yield values more than an order of magnitude greater than theoretically predicted, and show only weak correlations with other nova properties (Roy et al 2012, Tarasova 2019. Much of this discrepancy may be addressed by more accurately and consistently correcting for the effects of clumping and aspherical geometries in the ejecta, which would drive observational estimates downward (Ribeiro et al 2014, Wendeln et al 2017.…”

Section: Maccmentioning

confidence: 79%

New Insights into Classical Novae

Chomiuk,

Metzger,

Shen

2020

Preprint

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We survey our understanding of classical novae-non-terminal, thermonuclear eruptions on the surfaces of white dwarfs in binary systems. The recent and unexpected discovery of GeV gamma-rays from Galactic novae has highlighted the complexity of novae and their value as laboratories for studying shocks and particle acceleration. We review half a century of nova literature through this new lens, and conclude:• The basics of the thermonuclear runaway theory of novae are confirmed by observations. The white dwarf sustains surface nuclear burning for some time after runaway, and until recently, it was commonly believed that radiation from this nuclear burning solely determines the nova's bolometric luminosity. • The processes by which novae eject material from the binary system remain poorly understood. Mass loss from novae is complex (sometimes fluctuating in rate, velocity, and morphology) and often prolonged in time over weeks, months, or years. • The complexity of the mass ejection leads to gamma-ray producing shocks internal to the nova ejecta. When gamma-rays are detected (around optical maximum), the shocks are deeply embedded and the surrounding gas is very dense. • Observations of correlated optical and gamma-ray light curves confirm that the shocks are radiative and contribute significantly to the bolometric luminosity of novae. Novae are therefore the closest and most common "interaction-powered" transients.

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A theoretical study of heavy nucleus-acoustic waves in white dwarf core environments

Dasgupta,

Karmakar

2023

Pramana - J Phys

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Masses and Metallicity of Nova Envelopes with Carbon-Oxygen (CO) and Oxygen-Neon-Magnesium (ONeMg) White Dwarfs

Cited by 5 publications

References 12 publications

New Insights into Classical Novae

New Insights into Classical Novae

New Insights into Classical Novae

A theoretical study of heavy nucleus-acoustic waves in white dwarf core environments

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