76 citations · 276 across the 24 of their papers we have counts for
24 papers
Unveiling the small-scale jets in the rapidly growing supermassive black hole IZw1
Xiaolong Yang, Su Yao, Luigi C. Gallo +10
Accretion of black holes at near-Eddington or super-Eddington rates is the most powerful episode that drives black hole growth, and it may work in several types of objects. However…
Intermediate-mass black holes: finding of episodic, large-scale and powerful jet activity in a dwarf galaxy
Jun Yang, Zsolt Paragi, Sándor Frey +10
Dwarf galaxies are characterised by a very low luminosity and low mass. Because of significant accretion and ejection activity of massive black holes, some dwarf galaxies also host…
Does a radio jet drive the massive multi-phase outflow in the ultra-luminous infrared galaxy IRAS 10565+2448?
Renzhi Su, Elizabeth K. Mahony, Minfeng Gu +14
We present new upgraded Giant Metrewave Radio Telescope (uGMRT) HI 21-cm observations of the ultra-luminous infrared galaxy IRAS 10565+2448, previously reported to show blueshifted…
How dark the sky: the JWST backgrounds
Jane R. Rigby, Paul A. Lightsey, Macarena García Marín +17
We describe the sources of stray light and thermal background that affect JWST observations, report actual backgrounds as measured from commissioning and early-science observations…
Neutrino Rocket Jet Model: An Explanation of High-velocity Pulsars and their Spin-down Evolution
Zheng Li, Qiu-He Peng, Miao Kang +4
The fact that the spatial velocity of pulsars is generally higher than that of their progenitor stars has bothered astronomers for nearly 50 years. It has been extensively argued t…
Explaining the 'outliers' track in Black Hole X-ray Binaries with the BZ-jet and inner-disk coupling
Ning Chang, Xiang Liu, Fu-Guo Xie +2
In this paper, we investigate the black hole (BH) spin contribution to jet power, especially for the magnetic arrested disk (MAD), where only inner accretion disk luminosity is clo…
Detection of a Parsec-Scale Jet in a Radio-Quiet Narrow-Line Seyfert 1 Galaxy with Highly Accreting Supermassive Black Hole
Su Yao, Xiaolong Yang, Minfeng Gu +7
The jet in active galactic nuclei (AGN) is a key ingredient in understanding the co-evolution of galaxies and their central supermassive black holes (SMBHs). Unfortunately, the mec…
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…
A model of neutron-star--white-dwarf collision for fast radio bursts
Xiang Liu
Fast radio bursts (FRBs) with unknown origin emit a huge luminosity (about 1 Jy at 1 GHz) with a duration of milliseconds or less at extragalactic distances estimated from their la…
Correlation analysis of radio properties and accretion-disk luminosity for low luminosity AGNs
Renzhi Su, Xiang Liu, Zhen Zhang
The correlation between the jet power and accretion disk luminosity is investigated and analyzed with our model for 7 samples of low luminosity active galactic nuclei (LLAGNs). The…
NGC5252: a pair of radio-emitting active galactic nuclei?
Xiaolong Yang, Jun Yang, Zsolt Paragi +7
The X-ray source CXO J133815.6+043255 has counterparts in the UV, optical, and radio bands. Based on the multi-band investigations, it has been recently proposed by Kim et al. (201…
The physical fundamental plane of black hole activity: revisited
Xiang Liu, Zhenhua Han, Zhen Zhang
The correlation between the jet power and accretion disk luminosity is investigated for active galactic nuclei (AGNs) and black hole X-ray binaries (BHXBs) from the literature. The…
4.8 GHz Intra-Day Variability of FSRQ 0507+179
Lang Cui, Jun Liu, Xiang Liu
As one of targets of many flux monitoring campaigns, the FSRQ 0507+179 shows various flux variation properties at almost all observing wavelengths, from radio to -ray. With Urum…
On the relation of accretion rate and spin induced jet power in low luminosity AGN
Xiang Liu, Zhen Zhang, Zhenhua Han
From Liu and Han (2014), the accretion-dominated jet power has a linear proportionality with the accretion rate, whereas the power law index is <=0.5 at lower accretion rate. Attri…
How to detect super-massive binary black holes at parsec scales
Xiang Liu
It is difficult to find or identifying the binary black holes in parsec scales, since the dual AGN may be merged quickly. It is required to explore more possibilities to identifyin…
Is radio jet power linearly proportional to the product of central black hole mass and Eddington ratio in AGN?
Xiang Liu, Zhenhua Han
A model for the relation between radio jet power and the product of central black hole (BH) mass and Eddington ratio of AGN is proposed, and the model is examined with data from th…
A search for binary black hole candidates from the VLBI images of AGNs
Xiang Liu
We have searched the core-jets pairs in the VLBI scales (1 kpc), from several VLBI catalogues, and find out 6 possible binary black hole (BBH) candidates. We present the search…
Position angle changes of inner-jets in a sample of blazars
Ligong Mi, Xiang Liu
We have carried out the Gaussian model-fitting to the 15 GHz VLBA cores for a sample of blazars from the MOJAVE database, analyzed the correlations in the model-fitted parameters a…
IDV Observations & Study of the Quasar 0917+624
Xiang Liu, Quanwei Li, Thomas P. Krichbaum +2
We carried out intra-day variability (IDV) observations from August 2005 to January 2010 with the Urumqi 25m radio telescope for a dozen IDV sources including the quasar 0917+624.…
VLBI observations of 10 CSO candidates: expansion velocities of hot spots
Tao An, Fang Wu, Jun Yang +11
Observations of ten Compact Symmetric Objects ({\rm CSO}) candidates have been made with the Very Long Baseline Array at 8.4 GHz in 2005 and with a combined Chinese and European VL…
Radio observations of the first three-month Fermi-AGN at 4.8 GHz
Xiang Liu, Hua-Gang Song, Jun Liu +6
Using the Urumqi 25m radio telescope, sources from the first three-month Fermi-LAT detected AGN catalog with declination >0 were observed in 2009 at 4.8 GHz. The radio flux density…
Radio variability of 1st 3-months Fermi blazars at 5 GHz: affected by interstellar scintillation?
X. Liu, Z. Ding, J. Liu +2
Blazars from the first-three-months Fermi-AGN list were observed with the Urumqi 25m radio telescope at 5GHz in IDV (Intra-Day Variability) mode and inter-month observation mode. A…
Structure, spectra and variability of some GPS radio sources
X. Liu, H. -G Song, L. Cui
We report the results of multifrequency-VLBI observations of GHz-Peaked-Spectrum (GPS) radio sources. The VLBI structure and component spectra of some GPS sources are presented. Ou…
The follow-up EVN observations of twelve GPS radio sources at 5 GHz
L. Cui, X. Liu, J. Liu +2
We defined a sub-sample of twelve GPS sources which have not been observed with the VLBI before, from the Parkes half-Jansky sample, and carried out VLBI observations at 1.6 GHz an…