Constraints on the Size of Extra Dimensions from the Orbital Evolution of the Black-Hole X-Ray Binary XTE J1118+480

Abstract

In a universe of the Randall-Sundrum type, black holes are unstable and emit gravitational modes in the extra dimension. This leads to dramatically shortened lifetimes of astrophysical black holes and to an observable change of the orbital period of black-hole binaries. I obtain an upper limit on the rate of change of the orbital period of the binary XTE J1118+480 and constrain the asymptotic curvature radius of the extra dimension to a value that is of the same order as the constraints from other astrophysical sources. A unique property of XTE J1118+480 is that the expected rate of change of the orbital period due to magnetic braking alone is so large that only one additional measurement of the orbital period would lead to the first detection of orbital evolution of a black-hole binary and impose the tightest constraint to date on the size of one extra dimension of the order of 35 microns.

accepted for publication in A&A

References in corpus (15)

• Tests of the Gravitational Inverse-Square Law below the Dark-Energy Length Scale
• Particle Physics Implications of a Recent Test of the Gravitational Inverse Square Law
• Improved constraints on non-Newtonian forces at 10 microns
• Classical black hole evaporation in Randall-Sundrum infinite braneworld
• A Black Hole of > 6 Solar Masses in the X-ray Nova XTE J1118+480
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• Black Hole Astrophysics in AdS Braneworlds
• Detection of superhumps in XTE J1118+480 approaching quiescence
• MMT Observations of the Black Hole Candidate XTE J1118+480 near and in Quiescence
• On the existence and dynamics of braneworld black holes
• Chemical Abundances of the Secondary Star in the Black Hole X-ray Binary XTE J1118+480
• Constraints on the Size of Extra Dimensions from the Orbital Evolution of Black-Hole X-Ray Binaries
• Constraints on Braneworld Gravity Models from a Kinematic Limit on the Age of the Black Hole XTE J1118+480
• Evolution of low-mass binaries with black-hole components

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