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A supermassive black hole can launch a relativistic jet when it violentlydisrupts a star that passes too close. Such jetted tidal disruption events(TDEs) are rare and unique tools to investigate quiescent supermassive blackholes, jet physics, and circumnuclear environment at high redshift. The newlydiscovered TDE AT2022cmc ($z\sim 1.193$) providing rich multi-band (X-ray, UV,optical, sub-millimeter, and radio) data, has been interpreted as the fourthon-axis jetted TDE. In this work, we constrain the circumnuclear medium (CNM)density profile with both closure relation (CR) test and detailed forward shockmodel fit with Markov chain Monte Carlo (MCMC) approach to the multi-band(optical, sub-millimeter, and radio) data of AT2022cmc.We find that the CNMdensity profile of AT2022cmc is $n\propto R^{-k}$ with $k \sim 1.68$, implyinga Bondi accretion in history. Furthermore, our model fit result suggests atwo-component jet in AT2022cmc, indicating a similar jet physics towell-studied jetted TDE Sw J1644+57.

AT2022cmc: a Tidal Disruption Event with Two-component Jet in a Bondi-profile Circumnuclear Medium