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dc.contributor.author
Luna, Gerardo Juan Manuel
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dc.contributor.author
Sokoloski, J. L.
dc.contributor.author
Mukai, Koji
dc.contributor.author
Kuin, Paul M.
dc.date.available
2022-07-29T22:37:18Z
dc.date.issued
2020-10
dc.identifier.citation
Luna, Gerardo Juan Manuel; Sokoloski, J. L.; Mukai, Koji; Kuin, Paul M.; Increasing activity in T CrB suggests nova eruption is impending; IOP Publishing; Astrophysical Journal Letters; 902; 1; 10-2020; 1-3
dc.identifier.issn
2041-8205
dc.identifier.uri
http://hdl.handle.net/11336/163602
dc.description.abstract
Estimates of the accretion rate in symbiotic recurrent novae (RNe) often fall short of theoretical expectations by orders of magnitude. This apparent discrepancy can be resolved if the accumulation of mass by the white dwarf (WD) is highly sporadic, and most observations are performed during low states. Here we use a re-analysis of archival data from the Digital Access to a Sky Century @Harvard survey to argue that the most recent nova eruption in symbiotic RN T CrB, in 1946, occurred during—and was therefore triggered by—a transient accretion high state. Based on similarities in the optical light curve around 1946 and the time of the prior eruption, in 1866, we suggest that the WD in T CrB accumulates most of the fuel needed to ignite the thermonuclear runaways (TNRs) during accretion high states. A natural origin for such states is dwarf-nova like accretion-disk instabilities, which are expected in the presumably large disks in symbiotic binaries. The timing of the TNRs in symbiotic RNe could thus be set by the stability properties of their accretion disks. T CrB is in the midst of an accretion high state like the ones we posit led to the past two nova eruptions. Combined with the approach of the time at which a TNR would be expected based on the 80 yr interval between the prior two novae (2026 ± 3), the current accretion high state increases the likelihood of a TNR occurring in T CrB in the next few years.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
IOP Publishing
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Recurrent novae
dc.subject
Symbiotic binary stars
dc.subject
Accretion
dc.subject.classification
Astronomía
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dc.subject.classification
Ciencias Físicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Increasing activity in T CrB suggests nova eruption is impending
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-08-20T19:40:59Z
dc.identifier.eissn
2041-8213
dc.journal.volume
902
dc.journal.number
1
dc.journal.pagination
1-3
dc.journal.pais
Estados Unidos
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dc.description.fil
Fil: Luna, Gerardo Juan Manuel. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Universidad Nacional de Hurlingham; Argentina
dc.description.fil
Fil: Sokoloski, J. L.. Columbia University; Estados Unidos
dc.description.fil
Fil: Mukai, Koji. National Aeronautics and Space Administration; Estados Unidos. University of Maryland; Estados Unidos
dc.description.fil
Fil: Kuin, Paul M.. University College London; Reino Unido
dc.journal.title
Astrophysical Journal Letters
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.3847/2041-8213/abbb2c
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.3847/2041-8213/abbb2c
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