T CrB: Radio Observations during the 2016-2017 "Super-active" State

We obtained radio observations of the symbiotic binary and known recurrent nova T Coronae Borealis following a period of increased activity in the optical and X-ray bands. A comparison of our observations with those made prior to 2015 indicates that the system is in a state of higher emission in the...

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Bibliographic Details
Published in:The Astrophysical journal 2019-10, Vol.884 (1), p.8
Main Authors: Linford, Justin D., Chomiuk, Laura, Sokoloski, Jennifer L., Weston, Jennifer H. S., van der Horst, Alexander J., Mukai, Koji, Barrett, Paul, Mioduszewski, Amy J., Rupen, Michael
Format: Article
Language:English
Subjects:
Astrophysics
binaries: symbiotic
Bremsstrahlung
Companion stars
Deposition
Emission
Emissions
Ionization
novae, cataclysmic variables
Photoionization
Photosphere
Radio
radio continuum: stars
Radio observation
stars: individual (T CrB)
Stellar winds
white dwarfs
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Summary:We obtained radio observations of the symbiotic binary and known recurrent nova T Coronae Borealis following a period of increased activity in the optical and X-ray bands. A comparison of our observations with those made prior to 2015 indicates that the system is in a state of higher emission in the radio as well. The spectral energy distributions are consistent with optically thick thermal bremsstrahlung emission from a photoionized source. Our observations indicate that the system was in a state of increased ionization in the companion wind, possibly driven by an increase in accretion rate, with the radio photosphere located well outside the binary system.
ISSN:0004-637X
1538-4357
DOI:10.3847/1538-4357/ab3c62