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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Chinese Academy of SciencesCN1.5k papers
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- Centre National de la Recherche ScientifiqueFR138 papers
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33 papers · 1 filter
A Search for Infall Evidence in EGOs I: the Northern Sample
Xi Chen, Zhi-Qiang Shen, Jing-jing Li +2
We report the first systematic survey of molecular lines (including HCO+ (1-0) and 12CO, 13CO, C18O (1-0) lines at 3 mm band) towards a new sample of 88 massive young stellar objec…
X-ray Radiation Mechanisms and Beaming Effect of Hot Spots and Knots in Active Galactic Nuclear Jets
Jin Zhang, J. M. Bai, Liang Chen +1
The observed radio-optical-X-ray spectral energy distributions (SEDs) of 22 hot spots and 45 knots in the jets of 35 active galactic nuclei are complied from literature and modeled…
WD + He star systems as the progenitors of Type Ia supernovae and their surviving companion stars
Bo Wang, Zhanwen Han
Employing Eggleton's stellar evolution code with an optically thick wind assumption, we have systematically studied the WD + He star channel of Type Ia supernovae (SNe Ia), in whic…
Mechanism of very high energy radiation in BL Lacertae object 3C 66A
Jianping Yang, Jiancheng Wang
Our goal is to understand the nature of blazars and the mechanisms for the generation of high-energy -rays, through the investigation of the blazar 3C 66A. We model the high ene…
Companion stars of Type Ia supernovae and hypervelocity stars
Bo Wang, Zhanwen Han
{Context} Recent investigations of the white dwarf (WD) + He star channel of Type Ia supernovae (SNe Ia) imply that this channel can produce SNe Ia with short delay times. The comp…
On the DB gap of white dwarf evolution: effects of hydrogen mass fraction and convective overshooting
Jie Su, Yan Li
We investigate the spectral evolution of white dwarfs by considering the effects of hydrogen mass in the atmosphere and convective overshooting above the convection zone. We notice…
Estimating Black Hole Masses in Active Galactic Nuclei Using the MgII 2800 Emission Line
Jian-Guo Wang, Xiao-Bo Dong, Ting-Gui Wang +6
We investigate the relationship between the linewidths of broad Mg II \lambda2800 and Hbeta in active galactic nuclei (AGNs) to refine them as tools to estimate black hole (BH) mas…
CO J=3-2 Emission from the "Water Fountain" Sources IRAS 16342-3814 and IRAS 18286-0959
Hiroshi Imai, Jin-Hua He, Jun-ichi Nakashima +3
We observed CO J=3-2 emission from the "water fountain" sources, which exhibit high-velocity collimated stellar jets traced by water maser emission, with the Atacama Submillimeter…
The hard to soft spectral transition in LMXBs - affected by recondensation of gas into an inner disk
E. Meyer-Hofmeister, B. F. Liu, F. Meyer
Soft and hard spectral states of X-ray transient sources reflect two modes of accretion, accretion via a geometrically thin, optically thick disk or an advection-dominated accretio…
Application of the Disk Evaporation Model to AGNs
B. F. Liu, Ronald E. Taam
The disk corona evaporation model extensively developed for the interpretation of observational features of black hole X-ray binaries (BHXRBs) is applied to AGNs. Since the evapora…
GRB081028 and its late-time afterglow re-brightening
R. Margutti, F. Genet, J. Granot +19
Swift captured for the first time a smoothly rising X-ray re-brightening of clear non-flaring origin after the steep decay in a long gamma-ray burst (GRB): GRB081028. A rising phas…
Evolution of binary stars and its implications for evolutionary population synthesis
Z. Han, X. Chen, F. Zhang +1
Most stars are members of binaries, and the evolution of a star in a close binary system differs from that of an ioslated star due to the proximity of its companion star. The compo…
Primordial Binary Evolution and Blue Stragglers
X. Chen, Z. Han
Blue stragglers have been found in all populations. These objects are important in both stellar evolution and stellar population synthesis. Much evidence shows that blue stragglers…
The progenitors of Type Ia supernovae with long delay times
Bo Wang, Xiang-Dong Li, Zhan-Wen Han
The nature of the progenitors of Type Ia supernovae (SNe Ia) is still unclear. In this paper, by considering the effect of the instability of accretion disk on the evolution of whi…
GRB090111: extra soft steep decay emission and peculiar re-brightening
R. Margutti, T. Sakamoto, G. Chincarini +8
We present a detailed study of GRB090111, focusing on its extra soft power-law photon index Gamma>5 at the very steep decay phase emission (power-law index alpha=5.1, steeper than…
GRB 080916C and GRB 090510: the high energy emission and the afterglow
Wei-Hong Gao, Jirong Mao, Dong Xu +1
We constrain the physical composition of the outflows of GRBs 080916C and 090510 with the prompt emission data and find that the former is likely magnetic while the latter may be b…
Metal-Enriched Outflows in the Ultra-Luminous infrared Quasar Q1321+058
Tinggui Wang, Hongyan Zhou, Weimin Yuan +3
Quasar outflows may play important role in the evolution of its host galaxy and central black hole. In this paper, we present a detailed study of multiple outflows in the obscured…
The new model of fitting the spectral energy distributions of Mkn 421 and Mkn 501
Xiaoyan Gao, Jiancheng Wang, Jianping Yang
The spectral energy distribution (SED) of TeV blazars has a double-humped shape that is usually interpreted as Synchrotron Self Compton (SSC) model. The one zone SSC model is used…
Eddington ratio governs the equivalent width of MgII emission line in active galactic nuclei
Xiao-Bo Dong, Ting-Gui Wang, Jian-Guo Wang +4
We have investigated the ensemble regularities of the equivalent widths (EWs) of MgII 2800 emission line of active galactic nuclei (AGNs), using a uniformly selected sample of 2092…
Implications of Bulk Velocity Structures in AGN Jets
Jianping Yang, Jiancheng Wang, Benzhong Dai +1
The synchrotron self-Compton (SSC) models and External Compton (EC) models of AGN jets with continually longitudinal and transverse bulk velocity structures are constructed. The ob…
Nonaxisymmetric Rossby Vortex Instability with Toroidal Magnetic Fields in Radially Structured Disks
Cong Yu, Hui Li
We investigate the global nonaxisymmetric Rossby vortex instability in a differentially rotating, compressible magnetized accretion disk with radial density structures. Equilibrium…
Evolving to Type Ia Supernovae with Short Delay Times
Bo Wang, Xuefei Chen, Xiangcun Meng +1
The single-degenerate model is currently a favourable progenitor model for Type Ia supernovae (SNe Ia). Recent investigations on the WD + He star channel of the single-degenerate m…
Numerical Experiments of Wave-Like Phenomena Caused by the Disruption of an Unstable Magnetic Configuration
Hongjuan Wang, Chengcai Shen, Jun Lin
The origin of the Moreton wave observed in the chromosphere and the EIT wave observed in the corona during the eruption remains being an active research subject for a while. We inv…
The correlated optical and radio variability of BL Lacertae. WEBT data analysis 1994-2005
M. Villata, C. M. Raiteri, V. M. Larionov +2
Since 1997, BL Lacertae has undergone a phase of high optical activity, with the occurrence of several prominent outbursts. Starting from 1999, the Whole Earth Blazar Telescope (WE…