Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Perley, Rick"'
Radio interferometric (RI) data are noisy under-sampled spatial Fourier components of the unknown radio sky affected by direction-dependent antenna gains. Failure to model these antenna gains accurately results in a radio sky estimate with limited fi
Externí odkaz:
http://arxiv.org/abs/2102.00065
Autor:
Gendron-Marsolais, Marie-Lou, Hull, Charles L. H., Perley, Rick, Rudnick, Lawrence, Kraft, Ralph, Hlavacek-Larrondo, Julie, Fabian, Andrew C., Roediger, Elke, van Weeren, Reinout J., Richard-Laferrière, Annabelle, Golden-Marx, Emmet, Arakawa, Naoki, McBride, James D.
We present new deep, high-resolution, 1.5 GHz observations of the prototypical nearby Perseus galaxy cluster from the Karl G. Jansky Very Large Array. We isolate for the first time the complete tail of radio emission of the bent-jet radio galaxy NGC
Externí odkaz:
http://arxiv.org/abs/2101.05305
Autor:
Sebokolodi, M. Lerato, Perley, Rick, Eilek, Jean, Carilli, Chris, Smirnov, Oleg, Laing, Robert, Greisen, Eric, Wise, Michael
Publikováno v:
The Astrophysical Journal, Volume 903, 2020, 19 pp
We present results from deep, wideband, high spatial and spectral resolution observations of the nearby luminous radio galaxy Cygnus A with the Jansky Very Large Array. The high surface brightness of this source enables detailed polarimetric imaging,
Externí odkaz:
http://arxiv.org/abs/2009.06554
Autor:
de Gregory, Beatrice Terni, Feretti, Luigina, Giovannini, Gabriele, Govoni, Federica, Murgia, Matteo, Perley, Rick A., Vacca, Valentina
Aims. Narrow-angle tailed (NAT) sources in clusters of galaxies can show on the large scale very narrow tails that are unresolved even at arcsecond resolution. These sources could therefore be classified as one-sided jets. The aim of this paper is to
Externí odkaz:
http://arxiv.org/abs/1709.00223
This is the first of two papers describing the observations and cataloguing of deep 3-GHz observations of the Lockman Hole North using the Karl G. Jansky Very Large Array. The aim of this paper is to investigate, through the use of simulated images,
Externí odkaz:
http://arxiv.org/abs/1603.03084
Autor:
Vernstrom, Tessa, Scott, Douglas, Wall, Jasper, Condon, Jim, Cotton, Bill, Kellermann, Ken, Perley, Rick
This is the second of two papers describing the observations and source catalogues derived from sensitive 3-GHz images of the Lockman Hole North using the Karl G. Jansky Very Large Array. We describe the reduction and cataloguing process, which yield
Externí odkaz:
http://arxiv.org/abs/1603.03085
Autor:
O'Dea, Christopher P., Baum, Stefi A., Tremblay, Grant R., Kharb, Preeti, Cotton, William D., Perley, Rick A.
We present U, V, and I-band images of the host galaxy of Hercules A (3C 348) obtained with HST/WFC3/UVIS. We find a network of dusty filaments which are more complex and extended than seen in earlier HST observations. The filaments are associated wit
Externí odkaz:
http://arxiv.org/abs/1305.4935
Autor:
Perley, Rick A., Butler, Bryan J.
We develop an absolute flux density scale for cm-wavelength astronomy by combining accurate flux density ratios determined by the VLA between the planet Mars and a set of potential calibrators with the Rudy thermophysical emission model of Mars, adju
Externí odkaz:
http://arxiv.org/abs/1211.1300
Autor:
Dougherty, Sean M., Perley, Rick
The Very Large Array is undergoing a major upgrade that will attain an order of magnitude improvement in continuum sensitivity across 1 to 50 GHz with instantaneous bandwidths up to 8 GHz in both polarizations. The new WIDAR correlator provides a hig
Externí odkaz:
http://arxiv.org/abs/1011.0773
We describe a survey in the ELAIS N2 region with the VLA at 43.4 GHz, carried out with 1627 independent snapshot observations in D-configuration and covering about 0.5 square degrees. One certain source is detected, a previously-catalogued flat-spect
Externí odkaz:
http://arxiv.org/abs/1005.4903