  We investigate the hydrostatic equilibrium of white dwarfs within the
framework of Rastall-Rainbow gravity, aiming to explore the effects of this
modified gravitational theory on their properties. By employing the
Chandrasekhar equation of state in conjunction with the modified
Tolman-Oppenheimer-Volkoff equation, we derive the mass-radius relations for
white dwarfs. Our results show that the maximum mass of white dwarfs deviates
significantly from the predictions of general relativity, potentially exceeding
the Chandrasekhar limit. Furthermore, we discuss other properties of white
dwarfs, such as the gravitational redshift, compactness and dynamical
stability, shedding light on their behavior within the context of this modified
gravitational framework.
