搜索结果: 1-14 共查到“天文学 radio galaxies”相关记录14条 . 查询时间(0.187 秒)
Evolution in the clustering strength of radio galaxies
galaxies active Galaxies galaxies evolution Galaxies
2011/10/20
We cross match the NVSS and FIRST surveys with three large photometric catalogues of luminous red galaxies (LRGs) to define radio-loud samples. These have median redshifts 0.35, 0.55 and 0.68 and, by ...
Broad Line Radio Galaxies Observed with Fermi-LAT: The Origin of the GeV Gamma-Ray Emission
Broad Line Radio Galaxies Fermi-LAT:OriginGeV Gamma-Ray Emission
2011/10/10
We report on a detailed investigation of the gamma-ray emission from 18 broad line radio galaxies (BLRGs) based on two years of Fermi Large Area Telescope (LAT) data. We confirm the previously reporte...
Deep imaging of Fanaroff-Riley Class I radio galaxies with lobes
galaxies: jets – radio continuum:general – magnetic fi elds – polarization
2011/10/8
We present deep, high-resolution imaging of the nearby Fanaroff-Riley Class I (FR I) radio galaxies NGC 193, B2 0206+35, B2 0755+37 and M 84 at frequencies of 4.9 and 1.4 GHz using new and archival mu...
The Evolution of Radio Galaxies and X-ray Point Sources in Coma Cluster Progenitors Since z~1.2
Evolution Radio Galaxies Point Sources Cluster Progenitors Since
2011/9/30
Using Chandra imaging spectroscopy and Very Large Array (VLA) L-band radio maps, we have identified radio sources at P_{1.4GHz} >=5x10^{23} W Hz^{-1} and X-ray point sources (XPSs) at L_{0.3-8keV}>=5x...
The 1.6 micron near infrared nuclei of 3C radio galaxies: Jets, thermal emission or scattered light?
infrared nuclei 3C radio galaxies
2011/1/11
Using HST NICMOS 2 observations we have measured 1.6-micron near infrared nuclear luminosities of 100 3CR radio galaxies with z<0.3, by modeling and subtracting the extended emission from the host gal...
Starburst radio galaxies: general properties, evolutionary histories and triggering
galaxies active – galaxies jets – galaxies starburst – galaxies:interactions
2010/11/12
In this paper we discuss the results of a programme of spectral synthesis modelling of
a sample of starburst radio galaxies in the context of scenarios for the triggering of the
activity and the evo...
An optical spectroscopic survey of the 3CR sample of radio galaxies with z<0.3. III. Completing the sample
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/27
We present optical nuclear spectra for nine 3CR radio sources obtained with the Telescopio Nazionale Galileo, that complete our spectroscopic observations of the sample up to redshifts $<$ 0.3. We mea...
Evidence for a maximum jet efficiency for the most powerful radio galaxies
High Energy Astrophysical Phenomena (astro-ph.HE) Cosmology and Extragalactic Astrophysics (astro-ph.CO) Galaxy Astrophysics (astro-ph.GA)
2010/12/24
We use new mid-infrared (mid-IR) photometry from the Spitzer Space Telescope to study the relations between low-frequency radio luminosity density L_151MHz, mid-IR (12um rest-frame) luminosity L_12um,...
Large scale absorbers in the environment of high-z radio-galaxies。
The most luminous radio galaxies。
The emission line regions of redshift one radio galaxies
emission line regions redshift radio galaxies
2009/6/10
The emission line regions of redshift one radio galaxies。
Evidence for jet-cloud interactions in high-redshift radio galaxies
jet-cloud interactions high-redshift radio galaxies
2009/6/10
Evidence for jet-cloud interactions in high-redshift radio galaxies。
The ionization of the emission line gas in nearby powerful radio galaxies
radio galaxies emission line gas ionization
2009/6/10
The ionization of the emission line gas in nearby powerful radio galaxies。
The Multiwavelength Study of Two Unique Radio Galaxies
Galaxies clusters individual (Hercules A, 3 C310)
2009/5/19
We present the usage of multi-frequency and multi-band
radio, VLA, observations as well as X-ray observations in order to study
the environment around two powerful radio galaxies, namely Hercules A
...