搜索结果: 16-30 共查到“星系与宇宙学 radio”相关记录36条 . 查询时间(0.165 秒)
The VLA Survey of the Chandra Deep Field South. V. Evolution and Luminosity Functions of sub-mJy radio sources and the issue of radio emission in radio-quiet AGN
Chandra Deep Field Luminosity Functions radio sources radio emission
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2011/10/9
We present the evolutionary properties and luminosity functions of the radio sources belonging to the Chandra Deep Field South VLA survey, which reaches a flux density limit at 1.4 GHz of 43 microJy a...
Deep imaging of Fanaroff-Riley Class I radio galaxies with lobes
galaxies: jets – radio continuum:general – magnetic fi elds – polarization
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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...
Optical Properties of High-Frequency Radio Sources from the Australia Telescope 20 GHz (AT20G) Survey
catalogues – radio continuum:galaxies – galaxies:active – galax-ies:evolution
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2011/10/8
Our current understanding of radio-loud AGN comes predominantly from studies at frequencies of 5 GHz and below. With the recent completion of the Australia Telescope 20 GHz (AT20G) survey, we can now ...
A hidden radio halo in A1682?
galaxies: clusters: general – galaxies: clusters: individual: A1682 – radio continuum: general
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2011/10/8
High sensitivity observations of radio halos in galaxy clusters at frequencies lower than 330 MHz are still relatively rare, and very little is known compared to the classical 1.4 GHz images. The few ...
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
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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...
On the pulse-width statistics in radio pulsars. II. Importance of the core profile components
stars:pulsars:general – stars:neutron – stars:rotation
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2011/9/27
We performed a statistical analysis of half-power pulse-widths of the core components in average pulsar profiles. We confirmed an existence of the lower bound of the distribution of half-power pulse-w...
The Na D profiles of nearby low-power radio sources: Jets powering outflows
galaxies: active — galaxies:radio continuum — galaxies:ISM
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2011/9/28
We have analyzed the properties of the Na D doublet lines in a large sample of 691 radio galaxies using the Sloan Digital Sky Survey (SDSS). These radio galaxies are resolved in the FIRST survey, have...
Radio emission models of Colliding-Wind Binaries
Radio emission models Colliding-Wind Binaries
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2009/6/15
Radio emission models of Colliding-Wind Binaries。
VLA radio continuum observations of WR ring nebulae。
Biodiversity loss in the orion radio zoo?
The texox cluster survey：using radio sources as galaxy cluster signposts
texox cluster survey galaxy cluster signposts
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2009/6/8
The texox cluster survey：using radio sources as galaxy cluster signposts。
Radio Continuum and H I Observations of the Remarkable Planetary Nebula KJPN 8
Radio Continuum Planetary Nebulae
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2009/6/4
Radio Continuum and H I Observations of the Remarkable Planetary Nebula KJPN 8
The Multiwavelength Study of Two Unique Radio Galaxies
Galaxies clusters individual (Hercules A, 3 C310)
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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
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Associated HI Absorption in the z = 3.4 Radio Galaxy B2 0902+343 Observed with the GMRT
absorption lines radio lines galaxies radio galaxies individual (0902 C 343)
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2009/5/14
We have made observations of the associated HI absorption of a
high redshift radio galaxy 0902C34 at z D 3:395 with the Giant Meterwave
Radio Telescope in the 3231MHz band.We find a narrowabsorptio...
Radio Continuum and Far-infrared Emission from the Galaxies in the Eridanus Group
radio continuum radio–FIR correlation galaxies
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2009/5/12
The Eridanus galaxies follow the well-known radio–FIR
correlation. The majority (70%) of these galaxies have their star formation
rates below that of the Milky Way. The galaxies that have a signific...