Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Chinese Academy of SciencesCN5.9k papers
- University of Chinese Academy of SciencesCN2.2k papers
- Peking UniversityCN1.2k papers
- Centre National de la Recherche ScientifiqueFR759 papers
- Yunnan ObservatoriesCN679 papers
- Shanghai Astronomical ObservatoryCN633 papers
- Beijing Normal UniversityCN629 papers
- Purple Mountain ObservatoryCN616 papers
- Tsinghua UniversityCN578 papers
- Kavli Institute for Theoretical SciencesCN552 papers
- Nanjing UniversityCN462 papers
- Center for Astrophysics Harvard & SmithsonianUS455 papers
73 papers · 2 filters
The Reionization History in the Lognormal Model
Ji-Ren Liu, Li-Zhi Fang, Long-Long Feng +1
We study the evolution of baryonic gas before the reionization in the lognormal (LN) model of cosmic clustering. We show that the thermal history of the universe around the reioniz…
Comparing Geometrical and Delay Radio Emission Heights in Pulsars
Dipanjan Mitra, X. H. Li
We use a set of carefully selected published average multifrequency polarimetric observations for six bright cone dominated pulsars and devise a method to combine the multifrequenc…
Weak lensing of the Sunyaev-Zel'dovich sky
Xiang-Ping Wu
We address the question of whether the angular power spectrum of the thermal Sunyaev-Zel'dovich (SZ) sky is further distorted by weak gravitational lensing of foreground large-scal…
Pre-Processing of Galaxies before Entering a Cluster
Yutaka Fujita
We consider several mechanisms that possibly affect the evolution of disk galaxies in clusters using analytical models based on a hierarchical clustering scenario. We especially fo…
Chemical compositions of four barium stars
Y. C. Liang, G. Zhao, Y. Q. Chen +2
Chemical compositions of four barium stars HD 26886, HD 27271, HD 50082 and HD 98839 are studied based on high resolution, high signal-to-noise Echelle spectra. Results show that a…
Joint X-Ray and Optical Measurements of the Mass Distribution of the Distant Galaxy Cluster CLJ 0152.7-1357
Zhi-Ying Huo, Sui-Jian Xue, Haiguang Xu +2
We present joint X-ray and optical observations of the high redshift (z~0.83) lensing cluster CLJ0152.7-1357 made with the Chandra X-ray Observatory and the Keck telescope. We conf…
Optically bright Active Galactic Nuclei in the ROSAT-Faint Source Catalogue
M. -P. Veron-Cetty, S. K. Balayan, A. M. Mickaelian +8
To build a large, optically bright, X-ray selected AGN sample we have correlated the ROSAT-FSC catalogue of X-ray sources with the USNO catalogue limited to objects brighter than O…
Stationary perturbation configurations in a composite system of stellar and coplanarly magnetized gaseous singular isothermal discs
Yu-Qing Lou, Yue Zou
We construct aligned and unaligned stationary perturbation configurations in a composite system of stellar and coplanarly magnetized gaseous singular isothermal discs (SIDs) couple…
Chandra Observations of ULIRGs: Extended Hot Gas Halos in Merging Galaxies
Z. Y. Huo, X. Y. Xia, S. J. Xue +2
We study the properties of hot gaseous halos in 10 nearby ultraluminous IRAS galaxies observed with the ACIS instrument on board Chandra. For all sample galaxies, diffuse soft X-ra…
The amplitude of mass fluctuations and mass density of the Universe constrained by strong gravitational lensing
Da-Ming Chen
We investigate the linear amplitude of mass fluctuations in the universe, , and the present mass density parameter of the Universe, , from the statistical strong…
Rhombic cell analysis II. Application to the IRAS/PSCz Catalogue
T. Kiang, Yongfeng Wu, X. F. Zhu
Rhombic cell analysis as outlined in the first paper of the present series is applied to samples of varying depths and liming luminosities of the IRAS/PSCz Catalogue. Numerical ind…
Sulphur and zinc abundances in Galactic stars and damped Lyman-alpha systems
P. E. Nissen, Y. Q. Chen, M. Asplund +1
High resolution spectra of 34 halo population dwarf and subgiant stars have been obtained with VLT/UVES and used to derive sulphur abundances from the 8694.0, 8694.6 A and 9212.9,…
Observations of the pulsating subdwarf B star Feige 48: Constraints on evolution and companions
M. D. Reed, S. D. Kawaler
Since pulsating subdwarf B (sdBV or EC14026) stars were first discovered (Kilkenny et al, 1997), observational efforts have tried to realize their potential for constraining the in…
Optical and Infrared Photometry of the Nearby Type Ia Supernovae 1999ee, 2000bh, 2000ca, and 2001ba
Kevin Krisciunas, Mark M. Phillips, Nicholas B. Suntzeff +20
We present near infrared photometry of the Type Ia supernova 1999ee; also, optical and infrared photometry of the Type Ia SNe 2000bh, 2000ca, and 2001ba. For SNe 1999ee and 2000bh…
Can the Bump be Observed in the Early Afterglow of GRBS with X-Ray Line Emission Features?
W. H. Gao, D. M. Wei
Extremely powerful emission lines are observed in the X-ray afterglow of several GRBs. The energy contained in the illuminating continuum which is responsible for the line producti…
Envelope Expansion with Core Collapse. I. Spherical Isothermal Similarity Solutions
Yu-Qing Lou, Yue Shen
We investigate self-similar dynamical processes in an isothermal self-gravitational fluid with spherical symmetry. In reference to earlier complementary solution results of Larson,…
Strong GeV Emission Accompanying TeV Blazar H1426+428
Y. Z. Fan, Z. G. Dai, D. M. Wei
For High frequency BL Lac objects (HBLs) like H1426+428, a significant fraction of their TeV gamma-rays emitted are likely to be absorbed in interactions with the diffuse IR backgr…
Quasi-Local Evolution of the Cosmic Gravitational Clustering in Halo Model
Long-Long Feng, Li-Zhi Fang
We show that the nonlinear evolution of the cosmic gravitational clustering is approximately spatial local in the - (position-scale) phase space if the initial perturbations…
Binary black holes in Mkns as sources of gravitational radiation for space based interferometers
F. De Paolis, G. Ingrosso, A. A. Nucita +1
The possibility that some Markarian objects (e.g. Mkn 501, Mkn 421 and Mkn 766) host massive binary black hole systems with eccentric orbits at their centers has been considered. T…
Cross-correlation between the soft X-ray background and SZ Sky
Ling-Mei Cheng, Xiang-Ping Wu, Asantha Cooray
While both X-ray emission and Sunyaev-Zel'dovich (SZ) temperature fluctuations are generated by the warm-hot gas in dark matter halos, the two observables have different dependence…
Contamination of Cluster Radio Sources in the Measurement of the Thermal Sunyaev-Zel'dovich Angular Power Spectrum
Wei Zhou, Xiang-Ping Wu
We present a quantitative estimate of the confusion of cluster radio halos and galaxies in the measurement of the angular power spectrum of the thermal Sunyaev-Zel'dovich (SZ) effe…
Difference of -disks between Seyfert 1 galaxies and Quasars
W. Bian, Y. Zhao
In a previous paper (Bian & Zhao 2002), it was suggested that contamination to the luminosity of galactic nucleus from the host galaxies play an important role in determining param…
The black hole--bulge relation in AGNs
W. Bian, Y. Zhao
We used the widths of H and [OIII] emission lines to investigate the black hole--bulge relation in radio-loud AGNs, radio-quiet AGNs and NLS1s. The central black hole mass, $M_{…
Large-Field Multicolor Study of Abell 168 : Subclusters, Dynamics and Luminosity Functions
Yanbin Yang, Xu Zhou, Qirong Yuan +4
This paper presents a multicolor study of the nearby cluster of galaxies Abell 168 (z=0.045) with 13 intermediate-band filters in the Beijing-Arizona-Taiwan-Connecticut (BATC) filt…