T CrB: Radio Observations During the 2016--2017 "Super-Active" State

30 Sep 2019  ·  Linford Justin D. 1 and 2, Chomiuk Laura 6 and 7, Sokoloski Jennifer L 6 and 7, Weston Jennifer H. S. 6 and 7, van der Horst Alxander J. 6 and 7, Mukai Koji 8 and 9, Barrett Paul, Mioduszewski Amy J., Rupen Michael ·

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.

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High Energy Astrophysical Phenomena Solar and Stellar Astrophysics