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Extreme outbursts in young stars may be a common stage of pre-main-sequencestellar evolution. These outbursts, caused by enhanced accretion andaccompanied by increased luminosity, can also strongly impact the evolution ofthe circumstellar environment. We present ALMA and VLA observations of EX Lupi,a prototypical outburst system, at 100 GHz, 45 GHz, and 15 GHz. We use thesedata, along with archival ALMA 232 GHz data, to fit radiative transfer modelsto EX Lupi's circumstellar disk in its quiescent state following the extremeoutburst in 2008. The best fit models show a compact disk with a characteristicdust radius of 45 au and a total mass of 0.01 M$_{\odot}$. Our modelingsuggests grain growth to sizes of at least 3 mm in the disk, possibly spurredby the recent outburst, and an ice line that has migrated inward to $0.2-0.3$au post-outburst. At 15 GHz, we detected significant emission over the expectedthermal disk emission which we attribute primarily to stellar (gyro)synchrotronand free-free disk emission. Altogether, these results highlight what may be acommon impact of outbursts on the circumstellar dust.

ALMA and VLA Observations of EX Lupi in its Quiescent State