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142 papers
Strong low-frequency radio flaring from Cygnus X-3 observed with LOFAR
J. W. Broderick, T. D. Russell, R. P. Fender +12
We present Low-Frequency Array (LOFAR) 143.5-MHz radio observations of flaring activity during 2019 May from the X-ray binary Cygnus X-3. Similar to radio observations of previous…
Distinct accretion modes of Cygnus X-1 revealed from hard X-rays
Piotr Lubiński, Alexandros Filothodoros, Andrzej A. Zdziarski +1
Thanks to recurrent observations of the black hole binary Cyg X-1 carried out over 15 years the INTEGRAL satellite has collected the largest data set in the hard X-ray band for thi…
A comprehensive study of high-energy gamma-ray and radio emission from Cyg X-3
Andrzej A. Zdziarski, Denys Malyshev, Guillaume Dubus +6
We study high-energy -rays observed from Cyg X-3 by the Fermi Large Area Telescope and the 15-GHz emission observed by the Ryle Telescope and the Arcminute Microkelvin Imager. W…
9C spectral-index distributions and source-count estimates from 15 to 93 GHz - a re-assessment
E. M. Waldram, R. C. Bolton, J. M. Riley +1
In an earlier paper (2007), we used follow-up observations of a sample of sources from the 9C survey at 15.2 GHz to derive a set of spectral-index distributions up to a frequency o…
AMI-CL J0300+2613: a Galactic anomalous-microwave-emission ring masquerading as a galaxy cluster
Yvette C. Perrott, Therese M. Cantwell, Steve H. Carey +17
The Arcminute Microkelvin Imager (AMI) carried out a blind survey for galaxy clusters via their Sunyaev-Zel'dovich effect decrements between 2008 and 2011. The first detection, kno…
A Digital Correlator Upgrade for the Arcminute MicroKelvin Imager
Jack Hickish, Nima Razavi-Ghods, Yvette C. Perrott +18
The Arcminute Microkelvin Imager (AMI) telescopes located at the Mullard Radio Astronomy Observatory near Cambridge have been significantly enhanced by the implementation of a new…