WFRF:(Pizzo R. F.)
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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 11543naa a2201489 4500 | |
| 001 | oai:DiVA.org:lnu-51525 | |
| 003 | SwePub | |
| 008 | 160329s2015 | |||||||||||000 ||eng| | |
| 009 | oai:research.chalmers.se:cc3cdb4c-1aaf-4e86-8a19-f141dd27f3c2 | |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-515252 URI |
| 024 | 7 | a https://doi.org/10.1051/0004-6361/2015265012 DOI |
| 024 | 7 | a https://research.chalmers.se/publication/2310532 URI |
| 040 | a (SwePub)lnud (SwePub)cth | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a ref2 swepub-contenttype |
| 072 | 7 | a art2 swepub-publicationtype |
| 100 | 1 | a Orrù, E.u Radboud Universiteit,Radboud University,Netherlands Institute for Radio Astronomy (ASTRON)4 aut |
| 245 | 1 0 | a Wide-field LOFAR imaging of the field around the double-double radio galaxy B1834+620 :b A fresh view on a restarted AGN and doubeltjes |
| 264 | c 2015-12-01 | |
| 264 | 1 | b EDP Sciences,c 2015 |
| 338 | a print2 rdacarrier | |
| 520 | a Context. The existence of double-double radio galaxies (DDRGs) is evidence for recurrent jet activity in active galactic nuclei (AGN), as expected from standard accretion models. A detailed study of these rare sources provides new perspectives for investigating the AGN duty cycle, AGN-galaxy feedback, and accretion mechanisms. Large catalogues of radio sources, on the other hand, provide statistical information about the evolution of the radio-loud AGN population out to high redshifts.Aims. Using wide-field imaging with the LOFAR telescope, we study both a well-known DDRG as well as a large number of radio sources in the field of view.Methods. We present a high resolution image of the DDRG B1834+620 obtained at 144 MHz using LOFAR commissioning data. Our image covers about 100 square degrees and contains over 1000 sources.Results. The four components of the DDRG B1834+620 have been resolved for the first time at 144 MHz. Inner lobes were found to point towards the direction of the outer lobes, unlike standard FR II sources. Polarized emission was detected at +60 rad m-2 in the northern outer lobe. The high spatial resolution allows the identification of a large number of small double-lobed radio sources; roughly 10% of all sources in the field are doubles with a separation smaller than 1′.Conclusions. The spectral fit of the four components is consistent with a scenario in which the outer lobes are still active or the jets recently switched off, while emission of the inner lobes is the result of a mix-up of new and old jet activity. From the presence of the newly extended features in the inner lobes of the DDRG, we can infer that the mechanism responsible for their formation is the bow shock that is driven by the newly launched jet. We find that the density of the small doubles exceeds the density of FR II sources with similar properties at 1.4 GHz, but this difference becomes smaller for low flux densities. Finally, we show that the significant challenges of wide-field imaging (e.g., time and frequency variation of the beam, directional dependent calibration errors) can be solved using LOFAR commissioning data, thus demonstrating the potential of the full LOFAR telescope to discover millions of powerful AGN at redshift z ~ 1. | |
| 650 | 7 | a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng |
| 653 | a instrumentation | |
| 653 | a interferometers | |
| 653 | a interferometric | |
| 653 | a galaxies | |
| 653 | a radiation mechanisms | |
| 653 | a non-thermal | |
| 653 | a radio continuum | |
| 653 | a astroparticle physics | |
| 653 | a Astroparticle Physics | |
| 653 | a Astropartikelfysik | |
| 700 | 1 | a van Velzen, S.u Johns Hopkins University,Radboud Universiteit,Radboud University4 aut |
| 700 | 1 | a Pizzo, R. F.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut |
| 700 | 1 | a Yatawatta, S.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut |
| 700 | 1 | a Paladino, R.u Universita di Bologna,University of Bologna,Istituto nazionale di astrofisica (INAF)4 aut |
| 700 | 1 | a Iacobelli, M.u Netherlands Institute for Radio Astronomy (ASTRON),Netherlands Institute for Space Research (SRON)4 aut |
| 700 | 1 | a Murgia, M.u Istituto nazionale di astrofisica (INAF),Commonwealth Scientific and Industrial Research Organisation (CSIRO),Universiteit Twente,University of Twente,Netherlands Institute for Radio Astronomy (ASTRON),Universität Hamburg,University of Hamburg,Universiteit Leiden (UL),Leiden University (UL),Thüringer Landessternwarte Tautenburg,National Astronomical Observatory of Japan,Observatoire de Lyon,Lyon Observatory,University Of Oxford,Leibniz-Institut Für Astrophysik Potsdam,Leibniz Institute for Astrophysics Potsdam,Universite d'Orleans,University of Orléans,Universiteit Van Amsterdam,University of Amsterdam4 aut |
| 700 | 1 | a Falcke, H.u Radboud Universiteit,Radboud University,Max-Planck Institut für Radioastronomie,Max-Planck Institute for Radio Astronomy,Netherlands Institute for Radio Astronomy (ASTRON)4 aut |
| 700 | 1 | a Morganti, R.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut |
| 700 | 1 | a de Bruyn, A. G.u Netherlands Institute for Radio Astronomy (ASTRON),Shell Technology Center4 aut |
| 700 | 1 | a Ferrari, C.u Université Nice Sophia Antipolis (UNS)4 aut |
| 700 | 1 | a Anderson, J.u Deutsches GeoForschungsZentrum (GFZ),German Research Centre for Geosciences (GFZ),George Washington University4 aut |
| 700 | 1 | a Bonafede, A.u Universität Hamburg,University of Hamburg4 aut |
| 700 | 1 | a Mulcahy, D.u University of Manchester4 aut |
| 700 | 1 | a Asgekar, A.u Radboud Universiteit,Radboud University,Netherlands Institute for Radio Astronomy (ASTRON),Commonwealth Scientific and Industrial Research Organisation (CSIRO),University of Manchester,University Of Oxford4 aut |
| 700 | 1 | a Avruch, I. M.4 aut |
| 700 | 1 | a Beck, R.u Max-Planck Institut für Radioastronomie,Max-Planck Institute for Radio Astronomy4 aut |
| 700 | 1 | a Bell, M. E.4 aut |
| 700 | 1 | a van Bemmel, I.u Netherlands Institute for Radio Astronomy (ASTRON),Joint Institute for VLBI in Europe (JIVE)4 aut |
| 700 | 1 | a Bentum, M. J.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut |
| 700 | 1 | a Bernardi, G.u Harvard-Smithsonian Center for Astrophysics4 aut |
| 700 | 1 | a Best, P.u University of Edinburgh4 aut |
| 700 | 1 | a Breitling, F.u Leibniz-Institut Für Astrophysik Potsdam,Leibniz Institute for Astrophysics Potsdam4 aut |
| 700 | 1 | a Broderick, J. W.u University of Southampton4 aut |
| 700 | 1 | a Brüggen, M.4 aut |
| 700 | 1 | a Butcher, H. R.u Australian National University,Universiteit Leiden (UL),Leiden University (UL)4 aut |
| 700 | 1 | a Ciardi, B.u Max-Planck-Institut für Astrophysik,Max Planck Institute for Astrophysics4 aut |
| 700 | 1 | a Conway, John,d 1963u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)jconway |
| 700 | 1 | a Corstanje, A.4 aut |
| 700 | 1 | a de Geus, E.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut |
| 700 | 1 | a Deller, A.4 aut |
| 700 | 1 | a Duscha, S.u Netherlands Institute for Radio Astronomy (ASTRON),Universität Bielefeld,Bielefeld University4 aut |
| 700 | 1 | a Eislöffel, J.u Thüringer Landessternwarte Tautenburg,Ruhr-Universität Bochum4 aut |
| 700 | 1 | a Engels, D.4 aut |
| 700 | 1 | a Frieswijk, W.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut |
| 700 | 1 | a Garrett, M. A.u Leibniz-Institut Für Astrophysik Potsdam,Leibniz Institute for Astrophysics Potsdam,Universiteit Leiden (UL),Leiden University (UL),Universiteit Van Amsterdam,University of Amsterdam4 aut |
| 700 | 1 | a Grießmeier, J.u Universite d'Orleans,University of Orléans4 aut |
| 700 | 1 | a Gunst, A. W.4 aut |
| 700 | 1 | a Hamaker, J. P.u Netherlands Institute for Radio Astronomy (ASTRON),Rijksuniversiteit Groningen,University of Groningen4 aut |
| 700 | 1 | a Heald, G.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut |
| 700 | 1 | a Hoeft, M.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut |
| 700 | 1 | a van der Horst, A. J.4 aut |
| 700 | 1 | a Intema, H.u National Radio Astronomy Observatory,Universiteit Leiden (UL),Leiden University (UL)4 aut |
| 700 | 1 | a Juette, E.4 aut |
| 700 | 1 | a Kohler, J.u Max-Planck Institut für Radioastronomie,Max-Planck Institute for Radio Astronomy4 aut |
| 700 | 1 | a Kondratiev, V. I.u Astro Space Center of Lebedev Physical Institute,Radboud Universiteit,Radboud University4 aut |
| 700 | 1 | a Kuniyoshi, M.4 aut |
| 700 | 1 | a Kuper, G.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut |
| 700 | 1 | a Loose, M.4 aut |
| 700 | 1 | a Maat, P.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut |
| 700 | 1 | a Mann, G.4 aut |
| 700 | 1 | a Markoff, S.u Universiteit Van Amsterdam,University of Amsterdam4 aut |
| 700 | 1 | a McFadden, R.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut |
| 700 | 1 | a McKay-Bukowski, D.u Oulun Yliopisto,University of Oulu,STFC Rutherford Appleton Laboratory4 aut |
| 700 | 1 | a Miley, G.4 aut |
| 700 | 1 | a Moldon, J.4 aut |
| 700 | 1 | a Molenaar, G.4 aut |
| 700 | 1 | a Munk, H.4 aut |
| 700 | 1 | a Nelles, A.4 aut |
| 700 | 1 | a Paas, H.4 aut |
| 700 | 1 | a Pandey-Pommier, M.4 aut |
| 700 | 1 | a Pandey, V. N.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut |
| 700 | 1 | a Pietka, G.u University Of Oxford4 aut |
| 700 | 1 | a Polatidis, A. G.4 aut |
| 700 | 1 | a Reich, W.u Max-Planck Institut für Radioastronomie,Max-Planck Institute for Radio Astronomy,Harvard-Smithsonian Center for Astrophysics4 aut |
| 700 | 1 | a Röttgering, H.4 aut |
| 700 | 1 | a Rowlinson, A.4 aut |
| 700 | 1 | a Scaife, A.4 aut |
| 700 | 1 | a Schoenmakers, A.4 aut |
| 700 | 1 | a Schwarz, D.4 aut |
| 700 | 1 | a Serylak, M.4 aut |
| 700 | 1 | a Shulevski, A.4 aut |
| 700 | 1 | a Smirnov, O.u Rhodes University4 aut |
| 700 | 1 | a Steinmetz, M.4 aut |
| 700 | 1 | a Stewart, A.4 aut |
| 700 | 1 | a Swinbank, J.u Universiteit Van Amsterdam,University of Amsterdam4 aut |
| 700 | 1 | a Tagger, M.4 aut |
| 700 | 1 | a Tasse, C.u Observatoire de Paris-Meudon4 aut |
| 700 | 1 | a Thoudam, Satyendrau Radboud University, The Netherlands,Radboud Universiteit4 aut0 (Swepub:lnu)sathaa |
| 700 | 1 | a Toribio, M. C.4 aut |
| 700 | 1 | a Vermeulen, R.u Netherlands Institute for Radio Astronomy (ASTRON)4 aut |
| 700 | 1 | a Vocks, C.u Leibniz-Institut Für Astrophysik Potsdam,Leibniz Institute for Astrophysics Potsdam4 aut |
| 700 | 1 | a van Weeren, R. J.4 aut |
| 700 | 1 | a Wijers, R. A. M. J.u Universiteit Van Amsterdam,University of Amsterdam4 aut |
| 700 | 1 | a Wise, M. W.4 aut |
| 700 | 1 | a Wucknitz, O.u Max-Planck Institut für Radioastronomie,Max-Planck Institute for Radio Astronomy4 aut |
| 710 | 2 | a Radboud Universiteitb Netherlands Institute for Radio Astronomy (ASTRON)4 org |
| 773 | 0 | t Astronomy and Astrophysicsd : EDP Sciencesg 584, s. 1-12q 584<1-12x 0004-6361x 1432-0746 |
| 856 | 4 | u https://www.aanda.org/articles/aa/pdf/2015/12/aa26501-15.pdf |
| 856 | 4 | u http://publications.lib.chalmers.se/records/fulltext/231053/local_231053.pdfx primaryx freey FULLTEXT |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-51525 |
| 856 | 4 8 | u https://doi.org/10.1051/0004-6361/201526501 |
| 856 | 4 8 | u https://research.chalmers.se/publication/231053 |
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