Abstract
view Abstract Citations (55) References (30) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Localized thermonuclear runaways and volcanoes on degenerate dwarf stars Shara, M. M. Abstract A unified thermonuclear-runaway mechanism for dwarf and classical novae is considered that involves thermonuclear-powered 'volcanic' (or localized) eruptions accompanied by hot bright 'lava' flows on the surfaces of white dwarfs in some binary systems. Energy-transport and thermonuclear-runaway time scales in degenerate dwarf envelopes are compared, and it is shown that localized, rather than global, eruptions often occur. The envelope and white dwarf masses that lead to localized thermonuclear runaways (LTNR's) are estimated. LTNR's on neutron stars are briefly considered. Order-of-magnitude estimates are given for the eruption, flow, and shutdown characteristics of a white dwarf LTNR. It is suggested that LTNR's are likely to recur with time scales of weeks or months and that the end product of such evolution might be a Type I supernova. Publication: The Astrophysical Journal Pub Date: October 1982 DOI: 10.1086/160376 Bibcode: 1982ApJ...261..649S Keywords: Dwarf Novae; Neutron Stars; Novae; Stellar Mass Accretion; Thermonuclear Reactions; White Dwarf Stars; Energy Transfer; Stellar Envelopes; Stellar Evolution; Stellar Models; X Ray Sources; Astrophysics full text sources ADS |
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