3 papers
astro-ph.CO2017
Cosmic Microwave Background Dipole Asymmetry could be explained by Axion Monodromy Cosmic Strings
Qiaoli Yang, Hongbiao Yu, Haoran Di
Observations by the Wilkinson Microwave Anisotropy Probe and the Planck mission suggest a hemispherical power amplitude asymmetry in the cosmic microwave background, with a correla…
astro-ph.CO2017
Primordial black holes and second order gravitational waves from ultra-slow-roll inflation
Haoran Di, Yungui Gong
The next generation of space-borne gravitational wave detectors may detect gravitational waves from extreme mass-ratio inspirals with primordial black holes. To produce primordial…
astro-ph.CO2016
Hemispherical Power Asymmetry of the Cosmic Microwave Background from a Remnant of a pre-Inflationary Topological Defect
Qiaoli Yang, Yunqi Liu, Haoran Di
Observations indicate that large-scale anomalies exist in the fluctuations of the cosmic microwave background. In these anomalies, the hemispherical power amplitude asymmetry has a…