Results 41 to 50 of about 101,827 (259)
Radio Physics and Radio Astronomy, 2017 Purpose: From April 2017, a monitoring program of observations has been started at the RT-16 telescope of Ventspils Radio Astronomy Center (frequencies 5, 6.1, 6.7, 8.4 GHz) to study the intraday and interdiurnal variability of extragalactic radio ...
A. L. Sukharev +4 more
doaj +1 more source
Spectral ageing in the lobes of FR-II radio galaxies: new methods of analysis for broad-band radio data [PDF]
, 2013 The broad-bandwidth capabilities of next generation telescopes such as the Jansky Very Large Array (JVLA) mean that the spectrum of any given source varies significantly within the bandwidth of any given observation.
Goodger, J. L. +7 more
core +1 more source
Luminous Radio Emission from the Superluminous Supernova 2017ens at 3.3 yr after Explosion
The Astrophysical Journal Letters, 2023 We present the results from a multiyear radio campaign of the superluminous supernova (SLSN) SN 2017ens, which yielded the earliest radio detection of an SLSN to date at the age of ∼3.3 yr after explosion. SN 2017ens was not detected at radio frequencies
Raffaella Margutti +19 more
doaj +1 more source
BROADBAND RADIO POLARIMETRY AND FARADAY ROTATION OF 563 EXTRAGALACTIC RADIO SOURCES [PDF]
, 2015 We present a broadband spectropolarimetric survey of 563 discrete, mostly unresolved radio sources between 1.3 and 2.0 GHz using data taken with the Australia Telescope Compact Array.
C. Anderson +3 more
semanticscholar +1 more source
Spectral variability of radio sources at low frequencies [PDF]
Monthly notices of the Royal Astronomical Society, 2020 Spectral variability of radio sources encodes information about the conditions of intervening media, source structure, and emission processes. With new low-frequency radio interferometers observing over wide fractional bandwidths, studies of spectral ...
K. Ross +9 more
semanticscholar +1 more source
A search for candidate radio supernova remnants in the nearby irregular starburst galaxies NGC 4214 and NGC 4395 [PDF]
Serbian Astronomical Journal, 2005 We present the results of a search for new candidate radio supernova remnants (SNRs) in the nearby starburst irregular galaxies NGC 4214 and NGC 4395 using archived radio observations made with the Very Large Array (VLA) at the wavelengths of 3.5 cm, 6 ...
Vukotić B. +3 more
doaj +1 more source
THE CATALOG OF POSITIONS OF OPTICALLY BRIGHT EXTRAGALACTIC RADIO SOURCES OBRS–2 [PDF]
, 2013 It is expected that the European Space Agency mission Gaia will make it possible to determine coordinates in the optical domain of more than 500,000 quasars.
L. Petrov
semanticscholar +2 more sources
Depolarization of Extragalactic Radio Sources [PDF]
Symposium - International Astronomical Union, 1982 In the last decade correlations of the depolarization parameter λd with several parameters, i.e., the radio luminosity L, redshift z, and source size D have been investigated by several authors, where λd is the wavelength at which the percentage polarization drops to its half maximum. Kronberg ET AL.
M. Inoue, H. Tabara
openaire +1 more source
Extragalactic radio sources with sharply inverted spectrum at metre wavelengths [PDF]
, 2014 We present the first results of a systematic search for the rare extragalactic radio sources showing an inverted (integrated) spectrum, with spectral index $\alpha \ge +2.0$, a previously unexplored spectral domain. The search is expected to yield strong
Gopal-Krishna +7 more
semanticscholar +1 more source
A galactic microquasar mimicking winged radio galaxies
Nature Communications, 2017 Winged radio galaxies possess wing features detectable at radio wavelengths, yet the physical interpretation of such extragalactic radio sources remains elusive.
Josep Martí +3 more
doaj +1 more source