Results 61 to 70 of about 1,087,488 (286)

New 20-cm Radio-Continuum Study of the Small Magellanic Cloud: Part I - Images [PDF]

open access: yesSerbian Astronomical Journal, 2011
We present and discuss new high-sensitivity and resolution radio-continuum images of the Small Magellanic Cloud (SMC) at $lambda$=20~cm($u$=1.4~GHz).
Payne J. L.   +6 more
doaj   +3 more sources

Optical Spectra of Radio Planetary Nebulae in the Small Magellanic Cloud [PDF]

open access: yesSerbian Astronomical Journal, 2008
We present preliminary results from spectral observations of four (4) candidate radio sources co-identified with known planetary nebulae (PNe) in the Small Magellanic Cloud (SMC).
Payne, J. L.   +5 more
doaj   +3 more sources

THE RT-32 RADIO TELESCOPE CONSTRUCTION BASED ON THE MARK-4B ANTENNA SYSTEM. 3. LOCAL OSCILLATORS AND SELF-NOISE OF THE RECEIVING SYSTEM [PDF]

open access: yesRadio Physics and Radio Astronomy, 2020
Purpose: High resolution investigation of spectral lines of space sources requires low intrinsic noise of the radio telescope receiving system. It is provided with both input cryogenic amplifiers and low phase noise of local oscillators. To make spectral
O. M. Ulyanov   +25 more
doaj   +1 more source

Flux density measurements of a complete sample of faint blazars [PDF]

open access: yes, 2011
We performed observations with the Effelsberg 100-m radio telescope to measure flux densities and polarised emission of sources selected from the "Deep X-ray Radio Blazar Survey" (DXRBS) to better define their spectral index behaviour in the radio band ...
Abdo   +22 more
core   +1 more source

The Sardinia Radio Telescope - From a technological project to a radio observatory [PDF]

open access: yes, 2017
[Abridged] The Sardinia Radio Telescope (SRT) is the new 64-m dish operated by INAF (Italy). Its active surface will allow us to observe at frequencies of up to 116 GHz.
I. Prandoni   +45 more
semanticscholar   +1 more source

The ALMA radio telescope [PDF]

open access: yesProceedings of 2nd MCCT-SKADS Training School. Radio Astronomy: fundamentals and the new instruments — PoS(2nd MCCT-SKADS), 2009
University of Bordeaux, LAB & European ALMA Project Office, E SOE-mail:baudry@obs.u-bordeaux1.frThe Atacama Large Millimeter/submillimeter Array (ALMA) is an imaging radio telescope of upto 64 12-m antennas which can be moved to fixed stations across the Atacama plateau of northernChile to form antenna configurations extending from 150 m to a bout 15 km ...
openaire   +2 more sources

Kinematics and physical conditions of H I in nearby radio sources. The last survey of the old Westerbork Synthesis Radio Telescope [PDF]

open access: yes, 2017
We present an analysis of the properties of neutral hydrogen (H I) in 248 nearby (0.02 30 mJy and for which optical spectroscopy is available. The observations were carried out with the Westerbork Synthesis Radio Telescope as the last large project ...
F. Maccagni   +4 more
semanticscholar   +1 more source

Sardinia Radio Telescope observations of Abell 194 [PDF]

open access: yesAstronomy & Astrophysics, 2017
Aims. We study the intra-cluster magnetic field in the poor galaxy cluster Abell 194 by complementing radio data, at different frequencies, with data in the optical and X-ray bands.Methods. We analyzed new total intensity and polarization observations of
F. Govoni   +32 more
semanticscholar   +1 more source

PSR B0329+54: Statistics of Substructure Discovered within the Scattering Disk on RadioAstron Baselines of up to 235,000 km

open access: yes, 2016
We discovered fine-scale structure within the scattering disk of PSR B0329+54 in observations with the RadioAstron ground-space radio interferometer.
Andrianov, A. S.   +17 more
core   +1 more source

Scheduling and calibration strategy for continuous radio monitoring of 1700 sources every three days [PDF]

open access: yes, 2014
The Owens Valley Radio Observatory 40 meter telescope is currently monitoring a sample of about 1700 blazars every three days at 15 GHz, with the main scientific goal of determining the relation between the variability of blazars at radio and gamma-rays ...
Max-Moerbeck, Walter
core   +2 more sources

Home - About - Disclaimer - Privacy