A5070091851- Pulsars and Gravitational Waves Research
- Cold Atom Physics and Bose-Einstein Condensates
- Atomic and Subatomic Physics Research
- Advanced Frequency and Time Standards
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Astrophysical Phenomena and Observations
- Astrophysics and Cosmic Phenomena
- Black Holes and Theoretical Physics
California Institute of Technology
2021-2025
Magnetic fields lines are trapped in black hole event horizons by accreting plasma. If the field lightly loaded with plasma, then their motion is controlled footpoints on horizon and thus spin of hole. In this paper, we investigate boundary layer between polar a dense, equatorial accretion flow. We present an analytic model for aligned prograde retrograde systems argue that there significant shear across "jet-disk boundary" at most radii all spins. Specializing to accretion, where predicts...
Direct detection experiments for dark matter are increasingly ruling out large parameter spaces. However, light models with particle masses $<\mathrm{GeV}$ still largely unconstrained. Here we examine a proposal to use atom interferometers detect subcomponent at sub-GeV masses. We describe the decoherence and phase shifts caused by scattering off of one ``arm'' an interferometer using generalized direct framework. This allows us consider multiple channels: nuclear recoils, hidden photon...
We study the effects of geontropic vacuum fluctuations in quantum gravity on next-generation terrestrial gravitational wave detectors. If Verlinde-Zurek (VZ) effect proposed Verlinde and Zurek [Phys. Lett. B 822, 136663 (2021).], as modeled 826, 136910 (2022); Li et al. Phys. Rev. D 107, 024002 (2023)], appears upcoming GQuEST experiment, we show that it will be a large background for astrophysical searches observatories like Cosmic Explorer Einstein Telescope.
We study signatures of macroscopic dark matter (DM) in current and future gravitational wave (GW) experiments. Transiting DM with a mass $\ensuremath{\sim}{10}^{5}--{10}^{15}\text{ }\text{ }\mathrm{kg}$ that saturates the local density can be potentially detectable by GW detectors, depending on baseline detector strength force mediating interaction. In context laser interferometers, we derive gauge invariant observable due to transiting DM, including Shapiro effect (gravitational time delay...
We study signatures of macroscopic dark matter (DM) in current and future gravitational wave (GW) experiments. Transiting DM with a mass $\sim10^5-10^{15}$ kg that saturates the local density can be potentially detectable by GW detectors, depending on baseline detector strength force mediating interaction. In context laser interferometers, we derive gauge invariant observable due to transiting DM, including Shapiro effect (gravitational time delay accumulated during photon propagation),...