Search Publications

Primordial black holes and secondary gravitational waves from chaotic inflation

Gao, Qing

Chaotic inflation is inconsistent with the observational constraint at 68% CL. Here, we show that the enhancement mechanism with a peak function in the noncanonical kinetic term not only helps the chaotic model V(ϕ) = V₀ϕ^1/3 satisfy the observational constraint at large scales but also enhances the primordial scalar power spe…

The flux modulation of INTEGRAL

Zhang, Shu; Chen, YuPeng; Wang, JianMin +2 more

We have analyzed International Gamma-Ray Astrophysics Laboratory (INTEGRAL) data corresponding to observations of the high mass X-ray binary (HMXB) V0332+53 during its huge outburst which occurred in 2004–2005, and found that there is a quasi periodic signal with ultra low frequency of roughly 4‑5×10^‑5 Hz in the observation. This featur…