EVN observations of Seyfert galaxies

作者: M. Giroletti , F. Panessa

DOI:

关键词: Very-long-baseline interferometryPopulationPhysicsResolution (electron density)GalaxyAstrophysics

摘要: In this contribution, we report on dual-frequency EVN observations of six nuclei Seyfert galaxies imaged previously at arcsecond resolution with the VLA. These are part a distancelimited sample Seyferts, for which VLBI available only brightest objects. Our consider first time sources flux density around S ∼ 1 mJy (VLA cores), represents significant step to lower levels respect previous works. They thus an important towards understanding emission mechanism in as population.

参考文章(10)
Luis C. Ho, James S. Ulvestad, Radio Continuum Survey of an Optically Selected Sample of Nearby Seyfert Galaxies Astrophysical Journal Supplement Series. ,vol. 133, pp. 77- 118 ,(2001) , 10.1086/319185
Jean-Pierre Lasota, Jean-Pierre Lasota, Marek Sikora, Marek Sikora, Łukasz Stawarz, Łukasz Stawarz, Łukasz Stawarz, Radio Loudness of Active Galactic Nuclei: Observational Facts and Theoretical Implications The Astrophysical Journal. ,vol. 658, pp. 815- 828 ,(2007) , 10.1086/511972
M. Cappi, F. Panessa, L. Bassani, M. Dadina, G. DiCocco, A. Comastri, R. Della Ceca, A. V. Filippenko, F. Gianotti, L. C. Ho, G. Malaguti, J. S. Mulchaey, G. G. C. Palumbo, E. Piconcelli, W. L. W. Sargent, J. Stephen, M. Trifoglio, K. A. Weaver, X-ray spectral survey with XMM–Newton of a complete sample of nearby Seyfert galaxies Astronomy & Astrophysics. ,vol. 446, pp. 459- 470 ,(2006) , 10.1051/0004-6361:20053893
Heino Falcke, Neil M. Nagar, James S. Ulvestad, Andrew S. Wilson, Radio sources in low-luminosity active galactic nuclei. III. ``AGNs'' in a distance-limited sample of ``LLAGNs'' Astronomy and Astrophysics. ,vol. 392, pp. 53- 82 ,(2002) , 10.1051/0004-6361:20020874
Christopher P. O’Dea, Jack F. Gallimore, Jack F. Gallimore, Stefi A. Baum, THE PARSEC-SCALE RADIO STRUCTURE OF NGC 1068 AND THE NATURE OF THE NUCLEAR RADIO SOURCE The Astrophysical Journal. ,vol. 613, pp. 794- 810 ,(2004) , 10.1086/423167
James S. Ulvestad, Diane S. Wong, Gregory B. Taylor, Jack F. Gallimore, Carole G. Mundell, VLBA Identification of the Milliarcsecond Active Nucleus in the Seyfert Galaxy NGC 4151 The Astronomical Journal. ,vol. 130, pp. 936- 944 ,(2005) , 10.1086/432034
F. Panessa, X. Barcons, L. Bassani, M. Cappi, F. J. Carrera, L. C. Ho, S. Pellegrini, The X-ray and radio connection in low-luminosity active nuclei Astronomy and Astrophysics. ,vol. 467, pp. 519- 527 ,(2007) , 10.1051/0004-6361:20066943
Luis C. Ho, On the Relationship between Radio Emission and Black Hole Mass in Galactic Nuclei The Astrophysical Journal. ,vol. 564, pp. 120- 132 ,(2002) , 10.1086/324399
Marcello Giroletti, Francesca Panessa, Xavier Barcons, Luis Ho, Francisco Carrera, Silvia Pellegrini, Massimo Cappi, Loredana Bassani, The X-ray and radio connection in local Seyfert galaxies 37th COSPAR Scientific Assembly. ,vol. 37, pp. 2340- ,(2008)