Zobrazeno 1 - 10
of 20
pro vyhledávání: '"J Patrick Leahy"'
Autor:
Stuart E Harper, Adam Barr, C Dickinson, M W Peel, Roke Cepeda-Arroita, C J Copley, R D P Grumitt, J Patrick Leahy, J L Jonas, Michael E Jones, J Leech, T J Pearson, A C S Readhead, Angela C Taylor
Publikováno v:
Monthly Notices of the Royal Astronomical Society.
The Andromeda galaxy (M31) is our closest neighbouring spiral galaxy, making it an ideal target for studying the physics of the interstellar medium in a galaxy very similar to our own. Using new observations of M31 at 4.76GHz by the C-Band All-Sky Su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cc1649903dba5e8d84fe12eb39d8ff67
https://doi.org/10.1093/mnras/stad1539
https://doi.org/10.1093/mnras/stad1539
The reconstruction of Faraday depth structure from incomplete spectral polarization radio measurements using the RM Synthesis technique is an under-constrained problem requiring additional regularisation. In this paper we present cs-romer: a novel ob
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fcfaa896ef3ed226f9ea00bc789ce7db
The next generation of radio telescopes will strive for unprecedented dynamic range across wide fields of view, and direction-dependent gains such as the gain from the primary-beam pattern, or leakage of one Stokes product into another, must be remov
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6486b2f92697201df7802e6d2acfb9be
Autor:
Eric S. Perlman, David J. Axon, David J. E. Floyd, Robert Beswick, Neal Jackson, J. Patrick Leahy, Christopher P. O'Dea, William B. Sparks
Publikováno v:
The Astrophysical Journal. 639:23-36
We present the new HST near-infrared polarimetry, broad and narrow-band imaging, and MERLIN 4.5GHz Multi-Frequency Synthesis radio imaging of 3C 293, a unique radio galaxy whose host is an obvious merger remnant, in an exceptionally under-dense regio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f21038af269453b5edb8ef02a717c1fb
https://doi.org/10.1086/499295
https://doi.org/10.1086/499295
Publikováno v:
The Astrophysical Journal. 551:206-222
We present 1998 HST observations of M87 which yield the first single-epoch optical and radio-optical spectral index images of the jet at $0.15''$ resolution. We find $ \approx 0.67$, comparable to previous measurements, and $ \approx 0.9$ ($F_\nu \pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::053c9a6a9aa77b6a8eb414d2e3b634f4
https://doi.org/10.1086/320052
https://doi.org/10.1086/320052
Autor:
T. J. Pearson, Anthony C. S. Readhead, Angela C. Taylor, Justin L. Jonas, Richard J. Davis, Stephen Muchovej, O. G. King, Matthew A. Stevenson, Rod D. Davies, C. M. Holler, J. Patrick Leahy, M. Jones, J. J. John, Yaser A. Hafez, Charles Copley, Clive Dickinson
The C-Band All-Sky Survey (C-BASS) aims to produce sensitive, all-sky maps of diffuse Galactic emission at 5 GHz in total intensity and linear polarization. These maps will be used (with other surveys) to separate the several astrophysical components
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b10fe06aa413240c11d18da6a86f6f30
Autor:
Diana M Worrall, Mark Birkinshaw, F. Dulwich, C. A. Padgett, Sebastian Jester, Stefi A. Baum, Alessandro Capetti, Christopher P. O'Dea, John Biretta, André R. Martel, Eric S. Perlman, J. Patrick Leahy, William B. Sparks, Markos Georganopoulos
Publikováno v:
University of Bristol-PURE
We present an overview of new HST imaging polarimetry of six nearby radio galaxies with optical jets. These observations triple the number of extragalactic jets with subarcsecond-resolution optical polarimetry. We discuss the polarization characteris
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ae6abc7d8fd405b435ea28ef0a574d16
Recent investigations of how the median size of extragalactic radio sources change with redshift have produced inconsistent results. Eales compared the radio and optical properties of a bright 3C and faint 6C sample and concluded that $D\propto(1+z)^
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2897a5caa0d40e13eb62b727546136f0
http://arxiv.org/abs/astro-ph/9508036
http://arxiv.org/abs/astro-ph/9508036
Publikováno v:
The Astrophysical Journal. 381:63
It has been reported recently that in many extended high-luminosity extragalactic radio sources, the lobe on the jet side shows less depolarization than the lobe on the counterjet side. This depolarization asymmetry has been interpreted as being prod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0550e7d0a1b9d9824848f4ba7882b355
https://doi.org/10.1086/170628
https://doi.org/10.1086/170628
Publikováno v:
Miguel C\'arcamo, Anna M M Scaife, Emma L Alexander, J Patrick Leahy, CS-ROMER: A novel compressed sensing framework for Faraday depth reconstruction, Monthly Notices of the Royal Astronomical Society, 2022;, stac3031
The reconstruction of Faraday depth structure from incomplete spectral polarization radio measurements using the RM Synthesis technique is an under-constrained problem requiring additional regularisation. In this paper we present cs-romer: a novel ob
Externí odkaz:
http://arxiv.org/abs/2205.01413