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近日，广西大学物理科学与工程技术学院硕士生李国鹏研究致密双星并合起源的工作，论文以“Time-dependent Stellar-mass Binary Black Hole Mergers in AGN Disks:Mass Distribution of Hierarchical Mergers”为题被《Physical Review D》杂志接收发表。
The conference will be held at Jianguo Hotel. This hotel locates in downtown Shanghai, close to Subway Xujiahui station, and is also about 200 meters away from Shanghai Astronomical Observatory.
X-ray properties expected from AGN feedback in elliptical galaxies
X-ray properties expected feedback elliptical galaxies
2011/10/11
The ISM evolution of elliptical galaxies experiencing feedback from accretion onto a central black hole was studied recently with high-resolution 1D hydrodynamical simulations including radiative heat...
Determination of a magnetization parameter of the parsec-scale AGN jets
Determination magnetization parameter parsec-scale AGN jets
2011/9/27
The observed shift of the core of the relativistic AGN jets as a function of frequency allows us to evaluate the number density of outflowing plasma and, hence, the magnetization parameter. New analys...
Multiwavelength campaign on Mrk 509. III. The 600 ks RGS spectrum: unravelling the inner region of an AGN
Active Galactic Nuclei – X-ray spectroscopy – XMM-Newton – outfl ows – individual: Mrk 509 – galaxies: Seyfert
2011/9/27
We present the results of our 600 ks RGS observation as part of the multiwavelength campaign on Mrk 509. The very high quality of the spectrum allows us to investigate the ionized outflow with an unpr...
Demography of obscured and unobscured AGN: prospects for a Wide Field X-ray Telescope
unobscured AGN prospects Wide Field X-ray Telescope
2011/1/13
We discuss some of the main open issues in the evolution of Active Galactic Nuclei which can be solved by the sensitive, wide area surveys to be performed by the proposed Wide Field X-ray Telescope mi...
Based on previous spectral and temporal optical studies, Q2122-444 has been classified as a naked AGN or true type 2 AGN, that is, an AGN that genuinely lacks a broad line region (BLR). Its optical sp...
Anisotropic AGN Outflows and Enrichment of the Intergalactic Medium. II. Metallicity
cosmology — galaxies active — galaxies jets — intergalactic medium — methods
2010/11/15
We investigate the large-scale influence of outflows from AGNs in enriching the IGM with metals in a cosmological context. We combine cosmological simulations of large-scale structure formation with a...
Fe-K line probing of material around the AGN central engine with Suzaku
galaxies active — galaxies Seyfert — X-rays galaxies
2010/11/11
We systematically analyzed the high-quality Suzaku data of 88 Seyfert galax-ies, about 31% of which are Compton-thick AGNs. We obtained a clear relation between the absorption column density and the e...
The Origin of [OII] Emission in Recently Quenched AGN Hosts
galaxies active — galaxies clusters general — galaxies evolution X-rays galaxies
2010/11/11
We have employed emission-line diagnostics derived from DEIMOS and NIRSPEC spectroscopy to
determine the origin of the [OII] emission line observed in six AGN hosts at z 0.9. These galaxies are a s...
The Ultraviolet-X-ray connection in AGN outflows
X-ray Spectroscopy UV spectroscopy Active Galactic Nuclei absorption lines
2010/11/15
In this paper I review the recent progress in understanding the physics of the gas outflowing from active galactic nuclei and its impact on the surrounding environment, using the combined information ...
The Production of Ultra High Energy Cosmic Rays during the Early Epochs of Radio-loud AGN
High Energy Astrophysical Phenomena (astro-ph.HE)
2011/1/4
Powerful radio-loud active galactic nuclei (AGN) with large Mpc-scale jets have been theoretically motivated as emitters of high-energy cosmic rays. Recent radio observations have established a populo...
Comparison of AGN and Nuclear Starburst Activity in Seyfert 1 and 2 Galaxies over a Wide Luminosity Range Based on Near-infrared 2-4 micrometer Spectroscopy
Galaxy Astrophysics (astro-ph.GA)
2011/1/4
We present near-infrared K- (1.9-2.5 micrometer) and L- (2.8-4.2 micrometer) band spectroscopy of 22 Seyfert nuclei. We use two methods to investigate the presence of nuclear starbursts.
PAH and Emission Line Ratios in AGN and Starburst Galaxies
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/28
We study the Polycyclic Aromatic Hydrocarbons (PAH) bands, ionic emission lines, and Mid-infrared continuum properties, in a sample of 171 emission line galaxies taken from literature plus 15 new acti...
Suzaku and SWIFT-BAT observations of a newly discovered Compton-thick AGN
Cosmology and Extragalactic Astrophysics (astro-ph.CO) High Energy Astrophysical Phenomena (astro-ph.HE)
2010/12/28
Obscured AGN are fundamental to understand the history of Super Massive Black Hole growth and their influence on galaxy formation. However, the Compton-thick AGN (NH>1e24 cm^-2) population is basicall...