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V838 Mon is a stellar merger remnant that erupted in 2002 in a luminous rednovae event. Although it is well studied in the optical, near infrared andsubmillimeter regimes, its structure in the mid-infrared wavelengths remainselusive. We observed V838 Mon with the MATISSE (LMN bands) and GRAVITY (K band)instruments at the VLTI and also the MIRCX/MYSTIC (HK bands) instruments at theCHARA array. We geometrically modelled the squared visibilities and the closurephases in each of the bands to obtain constraints on physical parameters.Furthermore, we constructed high resolution images of V838 Mon in the HK bands,using the MIRA and SQUEEZE algorithms to study the immediate surroundings ofthe star. Lastly, we also modelled the spectral features seen in the K and Mbands at various temperatures. The image reconstructions show a bipolarstructure that surrounds the central star in the post merger remnant. In the Kband, the super resolved images show an extended structure (uniform diskdiameter $\sim 1.94$ mas) with a clumpy morphology that is aligned along anorth-west position angle (PA) of $-40^\circ$. Whereas in the H band, theextended structure (uniform disk diameter $\sim 1.18$ mas) lies roughly alongthe same PA. However, the northern lobe is slightly misaligned with respect tothe southern lobe, which results in the closure phase deviations. The VLTI andCHARA imaging results show that V838 Mon is surrounded by features thatresemble jets that are intrinsically asymmetric. This is also confirmed by theclosure phase modelling. Further observations with VLTI can help to determinewhether this structure shows any variation over time, and also if such bipolarstructures are commonly formed in other stellar merger remnants.

Reconstructing the mid-infrared environment in the stellar merger remnant V838 Monocerotis