T CrB: Radio Observations during the 2016-2017 “Super-active” State
Chomiuk, Laura; Sokoloski, Jennifer L.; Mukai, Koji; Mioduszewski, Amy J.; van der Horst, Alexander J.; Weston, Jennifer H. S.; Linford, Justin D.; Barrett, Paul; Rupen, Michael
United States, Canada
Abstract
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.