58 citations · 157 across the 9 of their papers we have counts for
9 papers
Radio observations of four active galactic nuclei hosting intermediate-mass black hole candidates: studying the outflow activity and evolution
Xiaolong Yang, Prashanth Mohan, Jun Yang +5
Observational searches for intermediate-mass black holes (IMBHs; ) include relatively isolated dwarf galaxies. For those that host active galactic nuclei (AG…
Observational constraint on Dark Energy from Quantum Uncertainty
Long Huang, Xiao feng Yang, Xiang Liu
We explore the theoretical possibility that dark energy density is derived from the vacuum particle pairs together with the quantum fluctuation of space-time. By assuming the vacuu…
Intra-Day Variability Observations of Two Dozens of Blazars at 4.8 GHz
Xiang Liu, Xin Wang, Ning Chang +4
Two dozens of radio loud active galactic nuclei (AGNs) have been observed with Urumqi 25 m radio telescope in order to search for intra-day variability (IDV). The target sources ar…
Radio activity of supermassive black holes with extremely high accretion rates
Xiaolong Yang, Su Yao, Jun Yang +8
Radio emission from the high- and super-Eddington accreting active galactic nuclei (AGNs) has various origins: a persistent jet, the magnetized corona and the wind-like outflows. I…
The reconstruction of dark energy with Ridge Regression Approach
Long Huang, Xiaofeng Yang, Xiang Liu
It may be determined by non-parametric method if the dark energy evolves with time. We propose a method of combining PCA and biased estimation on the basis of ridge regression anal…
Catching butterflies in the sky: Extended catalog of winged or X-shaped radio sources from the latest FIRST data release
Xiaolong Yang, Ravi Joshi, Gopal-Krishna +8
We present a catalog of 290 "winged" or X-shaped radio galaxies (XRGs) extracted from the latest (2014 December 17) data release of the "Very Large Array Faint Images of the Radio…