Correction to: Swimming of Gyrotactic Microorganisms in Unsteady Flow of Eyring Powell Nanofluid with Variable Thermal Features: Some Bio-technology Applications (International Journal of Thermophysics, (2020), 41, 11, (159), 10.1007/s10765-020-02736-2)

In study [1], the governing Eqs. 9, 11 for MHD flow of Eyring-Powell nanofluid due to oscillatory stretching surface in absence of buoyancy forces and activation energy are presented as [2–8]: (Formula presented.) (Formula presented.) where (Formula presented.) and (Formula presented.) are the fluid parameters of the Eyring-Powell model [2–8] and (Formula presented.) is porous medium. It is emphasized that the modelling of Eq. 9 is based on theory of Powell and Eyring [9]. In view of transformations (15–16) in [1], formulated system is: (Formula presented.) (Formula presented.) Since in Eq. 9, the contributions of buoyancy forces are not considered, therefore, no effects of (Formula presented.) have been entertained. Moreover, (Formula presented.) is the Hartmann number and (Formula presented.) heat source parameter while (Formula presented.) and (Formula presented.) Eyring fluid parameters [2–9]. In absence of buoyancy forces, Figs. 3(c–d), 4(c), 6(b) and 7(b) have no effects on analysis. Equation 24, is presented as: (Formula presented.) Moreover, in study [1], color illustration “Green Lines” in Fig. 4 and Fig. 5(c) should be read as “Blue Lines”.