title: White Dwarf Critical Tests for Modified Gravity.
abstract: Scalar-tensor theories of gravity can lead to modifications of the gravitational force inside astrophysical objects. We exhibit that compact stars such as white dwarfs provide a unique setup to test beyond Horndeski theories of G^{3} type. We obtain stringent and independent constraints on the parameter ϒ characterizing the deviations from Newtonian gravity using the mass-radius relation, the Chandrasekhar mass limit, and the maximal rotational frequency of white dwarfs. We find that white dwarfs impose stronger constraints on ϒ than red and brown dwarfs.
authors.affiliation: CP3-Origins, Centre for Cosmology and Particle Physics Phenomenology, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark.
authors.forename: Rajeev Kumar
authors.initials: RK
authors.lastname: Jain
authors.affiliation: CP3-Origins, Centre for Cosmology and Particle Physics Phenomenology, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark.
authors.forename: Chris
authors.initials: C
authors.lastname: Kouvaris
authors.affiliation: CP3-Origins, Centre for Cosmology and Particle Physics Phenomenology, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark.
authors.forename: Niklas Grønlund
authors.initials: NG
authors.lastname: Nielsen