Abstract
In this paper, we show how the chemotactic model introduced in Alejo and López (2021), which accounts for a chemical production–degradation operator of Hamilton–Jacobi type involving first‐ and second‐order derivatives of the logarithm of the cell concentration, namely, with , can be formally reduced to a repulsive Keller–Segel model with logarithmic sensitivity whenever the chemotactic parameters are appropriately chosen and the cell concentration keeps strictly positive. In this way, some explicit solutions (namely, traveling waves and stationary cell density profiles) of the former system can be transferred to a number of variants of the the latter by means of an adequate change of variables.
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