Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Xiao, Huangyu"'
We propose Fast Radio Burst (FRB) timing, which uses the precision measurements of the arrival time differences of repeated FRB signals along multiple sightlines, as a new probe of gravitational waves (GWs) around nHz to $\mu$Hz frequencies, with the
Externí odkaz:
http://arxiv.org/abs/2407.12920
Wave or fuzzy dark matter that is produced with relativistic wavenumbers exhibits free streaming effects analogous to warm or hot particle dark matter with relativistic momenta. Axions produced after inflation provide such a warm or mildly relativist
Externí odkaz:
http://arxiv.org/abs/2406.12970
The QCD axion and axion-like particles, as leading dark matter candidates, can also have interesting implications for dark matter substructures if the Peccei-Quinn symmetry is broken after inflation. In such a scenario, axion perturbations on small s
Externí odkaz:
http://arxiv.org/abs/2406.09499
We propose measuring the arrival time difference of Fast Radio Bursts (FRBs) along two adjacent sightlines as a new probe to dark matter substructures on scales down to $\sim 1\,$AU. We discuss two observational scenarios in which it may be possible
Externí odkaz:
http://arxiv.org/abs/2401.08862
Publikováno v:
Phys.Rev.D 110 (2024) 6, 063039
The axion, as a leading dark matter candidate, is the target of many ongoing and proposed experimental searches based on its coupling to photons. Ultralight axions that couple to photons can also cause polarization rotation of light, which the cosmic
Externí odkaz:
http://arxiv.org/abs/2311.02149
Autor:
Hooper, Dan, Xiao, Huangyu
Measurements of the primordial element abundances provide us with an important probe of our universe's early thermal history, allowing us to constrain the expansion rate and composition of our universe as early as $\sim 1 \, {\rm s}$ after the Big Ba
Externí odkaz:
http://arxiv.org/abs/2306.07339
Publikováno v:
Phys. Rev. D 109, 083026 (2024)
The LHAASO Collaboration has recently reported a measurement of the diffuse gamma-ray emission from the Galactic Plane at energies between 10 TeV and 1 PeV. While this emission is brighter than that expected from cosmic-ray interactions in the inters
Externí odkaz:
http://arxiv.org/abs/2306.00051
Axion-like dark matter whose symmetry breaking occurs after the end of inflation predicts enhanced primordial density fluctuations at small scales. This leads to dense axion minihalos (or miniclusters) forming early in the history of the Universe. Co
Externí odkaz:
http://arxiv.org/abs/2302.00685
Many theories of dark matter beyond the Weakly Interacting Massive Particles (WIMP) paradigm feature an enhanced matter power spectrum on sub-parsec scales, leading to the formation of dense dark matter minihaloes. Future local observations are promi
Externí odkaz:
http://arxiv.org/abs/2207.11276
Correlated red noise recently reported from pulsar timing observations may be an indication of stochastic gravitational waves emitted by cosmic strings that formed during a primordial phase transition near the Grand Unification energy scale. Unfortun
Externí odkaz:
http://arxiv.org/abs/2206.13534