搜索结果: 1-11 共查到“空间天文学 line”相关记录11条 . 查询时间(0.093 秒)
Off-Axis Energy Variability of AGNs: a New Paradigm for Broad-Line- and Continuum-Emitting Regions
accretion, accretion disks—black hole physics—galaxies: active— galaxies: Seyfert — polarization — quasars: emission lines
2011/10/17
The general picture of how thermal AGNs work has become clearer in recent years but major observational puzzles threaten to undermine this picture. These puzzles include AGNs with extremely asymmetric...
Narrow-line Seyfert 1 galaxies: an amasing class of AGN
Masers – Galaxies: active – Galaxies: nuclei – Galaxies: Seyfert – Radio lines: galaxies
2011/10/21
Narrow-line Seyfert 1 (NLS1) galaxies are a class of active galactic nuclei (AGN) that have all the properties of type 1 Seyfert galaxies but show peculiar characteristics, including the narrowest Bal...
A view of the narrow-line region in the infrared: active galactic nuclei with resolved fine-structure lines in the Spitzer archive
narrow-line region infrared: active galactic nuclei resolved fine-structure lines
2011/10/10
We queried the Spitzer archive for high-resolution observations with the Infrared Spectrograph of optically selected active galactic nuclei (AGN) for the purpose of identifying sources with resolved f...
Her X-1: the positive cyclotron line energy / luminosity correlation
pulsars: individual: – stars: neutron – stars: binaries
2011/9/28
Studies of some bright, super-Eddington transient pulsars show a negative correlation between the energy of the cyclotron resonance scattering feature (CRSF) and the bolometric luminosity. For Her X-1...
Keck Spectroscopy of Faint 3ies:- Evidence for a Declining Fraction of Emission Line Sources In the Redshift Range 6
Keck Spectroscopy Declining Fraction Emission Line Sources
2011/9/29
Using deep Keck spectroscopy of Lyman break galaxies selected from infrared imaging data taken with WFC3/IR onboard the Hubble Space Telescope, we present new evidence for a reversal in the redshift-d...
A Near-infrared view of the Narrow Line Region of AGN。
Hidden blazars and emission line variability of high redshift quasars
emission line high redshift quasars
2009/6/8
Hidden blazars and emission line variability of high redshift quasars。
Spectra from ASCA have provided the most detailed view to date of theX-ray spectral properties of stellar winds in massive X-ray binaries. Using de-tailed atomic mo dels that account for recombinat...
With the launch of the Chandra X-ray Observatory, high resolution X-rayspectroscopy of cosmic sources has begun. Early, deep observations of three stellarcoronal sources桟apella, Pro cyon, and HR 1099梐...
THE GRAVITATIONAL MICROLENS INFLUENCE ON X-RAY SPECTRAL LINE GENERATED BY AN AGN ACCRETION DISC
GRAVITATIONAL MICROLENS X-RAY SPECTRAL LINE AGN ACCRETION DISC
2009/3/13
The influence of gravitational microlensing on the X-ray spectral
line profiles originated from a relativistic accretion disc has been studied. Using
a disc model, we show that microlensing can indu...
THE GRAVITATIONAL MICROLENS INFLUENCE ON X-RAY SPECTRAL LINE GENERATED BY AN AGN ACCRETION DISC
GRAVITATIONAL MICROLENS X-RAY SPECTRAL LINE AGN ACCRETION DISC
2009/3/13
The influence of gravitational microlensing on the X-ray spectral
line profiles originated from a relativistic accretion disc has been studied. Using
a disc model, we show that microlensing can indu...