Results 21 to 30 of about 7,995,271 (350)

The ATESP 5 GHz radio survey. II. Physical properties of the faint radio population [PDF]

open access: yes, 2006
One of the most debated issues about sub-mJy radio sources, which are responsible for the steepening of the 1.4 GHz source counts, is the origin of their radio emission.
de Ruiter, H. R.   +7 more
core   +5 more sources

Evolution of faint radio sources in the VIDEO-XMM3 field [PDF]

open access: yes, 2013
It has been speculated that low luminosity radio-loud AGN have the potential to serve as an important source of AGN feedback, and may be responsible for suppressing star-formation activity in massive elliptical galaxies at late times.
K. Mcalpine   +3 more
semanticscholar   +1 more source

Fermi Large Area Telescope Observations of Misaligned AGN [PDF]

open access: yes, 2010
Analysis is presented on 15 months of data taken with the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope for 11 non-blazar AGNs, including 7 FRI radio galaxies and 4 FRII radio sources consisting of 2 FRII radio galaxies and 2 steep ...
A. A. Abdo   +218 more
core   +4 more sources

Physical properties of young radio sources: VLBA observations of high-frequency peaking radio sources [PDF]

open access: yes, 2013
Multifrequency Very Long Baseline Array (VLBA) observations were performed tostudy the radio morphology and the synchrotron spectra of four high frequency peak-ing radio sources.
M. Orienti   +3 more
semanticscholar   +1 more source

An Injection System for the CHIME/FRB Experiment

open access: yesThe Astronomical Journal, 2023
Dedicated surveys searching for fast radio bursts (FRBs) are subject to selection effects that bias the observed population of events. Software injection systems are one method of correcting for these biases by injecting a mock population of synthetic ...
Marcus Merryfield   +21 more
doaj   +1 more source

Sample variance, source clustering and their influence on the counts of faint radio sources [PDF]

open access: yes, 2013
The shape of the curves defined by the counts of radio sources per unit area as a function of their flux density was one of the earliest cosmological probes.
I. Heywood, M. Jarvis, J. Condon
semanticscholar   +1 more source

VLA radio continuum observations of a new sample of high redshift radio galaxies [PDF]

open access: yes, 2000
We present new deep multi-frequency radio-polarimetric images of a sample of high redshift radio galaxies (HzRGs), having redshift between 1.7 and 4.1.
Carilli, C. L.   +4 more
core   +3 more sources

Inferring the Energy and Distance Distributions of Fast Radio Bursts Using the First CHIME/FRB Catalog

open access: yesThe Astrophysical Journal, 2023
Fast radio bursts (FRBs) are brief, energetic, typically extragalactic flashes of radio emission whose progenitors are largely unknown. Although studying the FRB population is essential for understanding how these astrophysical phenomena occur, such ...
Kaitlyn Shin   +20 more
doaj   +1 more source

Temporal and Spectral Properties of the Persistent Radio Source Associated with FRB 20190520B with the VLA

open access: yesThe Astrophysical Journal, 2023
Among more than 800 known fast radio bursts (FRBs), only two, namely FRB 20121102A and FRB 20190520B, are confirmed to be associated with persistent radio sources (PRSs).
Xian Zhang   +14 more
doaj   +1 more source

Multiwavelength characterization of faint ultra steep spectrum radio sources: a search for high-redshift radio galaxies [PDF]

open access: yes, 2014
Context. Ultra steep spectrum (USS) radio sources are one of the efficient tracers of powerful high-z radio galaxies (HzRGs). In contrast to searches for powerful HzRGs from radio surveys of moderate depths, fainter USS samples derived from deeper radio ...
A. Basu   +133 more
core   +3 more sources

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