Zobrazeno 1 - 10
of 14
pro vyhledávání: '"K. C. Steenbrugge"'
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 454:3688-3696
We present the second extensive study of the coronal line variability in an active galaxy. Our data set for the well-studied Seyfert galaxy NGC 5548 consists of five epochs of quasi-simultaneous optical and near-infrared spectroscopy spanning a perio
Autor:
Missagh Mehdipour, S. Paltani, Jacobo Ebrero, Graziella Branduardi-Raymont, B. De Marco, Gerard A. Kriss, Gabriele Ponti, P.-O. Petrucci, Nahum Arav, Stefano Bianchi, Jelle Kaastra, Massimo Cappi, Elisa Costantini, K. C. Steenbrugge
Publikováno v:
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2016, 595, pp.A106. ⟨10.1051/0004-6361/201527956⟩
Astron.Astrophys.
Astron.Astrophys., 2016, 595, pp.A106. ⟨10.1051/0004-6361/201527956⟩
Astron.Astrophys., 2016, 595, pp.A106. 〈10.1051/0004-6361/201527956〉
Astronomy & Astrophysics (0004-6361), 595, A106
Astronomy & Astrophysics (0004-6361)
Astronomy and Astrophysics-A&A, EDP Sciences, 2016, 595, pp.A106. ⟨10.1051/0004-6361/201527956⟩
Astron.Astrophys.
Astron.Astrophys., 2016, 595, pp.A106. ⟨10.1051/0004-6361/201527956⟩
Astron.Astrophys., 2016, 595, pp.A106. 〈10.1051/0004-6361/201527956〉
Astronomy & Astrophysics (0004-6361), 595, A106
Astronomy & Astrophysics (0004-6361)
We model the broad emission lines present in the optical, UV and X-ray spectra of Mrk 509, a bright type 1 Seyfert galaxy. The broad lines were simultaneously observed during a large multiwavelength campaign, using the XMM-Newton-OM for the optical l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7931c33ec0a1407126f9594c3fcfe277
http://arxiv.org/abs/1606.06579
http://arxiv.org/abs/1606.06579
Autor:
Gerard A. Kriss, Gabriele Ponti, L. Di Gesu, Stefano Bianchi, Graziella Branduardi-Raymont, M. Cappi, M. Mehdipour, Jacobo Ebrero, K. C. Steenbrugge, Jelle Kaastra, P.-O. Petrucci, Hiromi Seta, M. Whewell, R. Boissay, F. Pozo-Nunez, Elisa Costantini
Publikováno v:
Astronomy & Astrophysics (0004-6361), 587, A129
(Abridged) The archetypal Seyfert 1 galaxy NGC 5548 was observed in 2013-2014 in the context of an extensive multiwavelength campaign, which revealed the source to be in an extraordinary state of persistent heavy obscuration. We re-analyzed the archi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::93ab867012b5ab024d4e6ce2fa0b9e0f
http://hdl.handle.net/20.500.12386/26414
http://hdl.handle.net/20.500.12386/26414
Autor:
M. Mehdipour, Francesco Ursini, Stefano Bianchi, Gabriele Ponti, Ciro Pinto, Justin Ely, N. Arav, M. Whewel, Carter Chamberlain, R. Boissay, K. C. Steenbrugge, C. de Vries, Dom Walton, M. Cappi, Hiromi Seta, B. De Marco, Etienne Behar, Giorgio Matt, F. Pozo Nuñez, Fiona A. Harrison, L. Di Gesu, P.-O. Petrucci, Jacobo Ebrero, Shai Kaspi, Gerard A. Kriss, S. Paltani, Bradley M. Peterson, K. Nandra, Elisa Costantini, A. de Rosa, Julien Malzac, Graziella Branduardi-Raymont, Jelle Kaastra
Publikováno v:
Astronomy & Astrophysics (0004-6361), 577, A37
ASTRONOMY & ASTROPHYSICS
ASTRONOMY & ASTROPHYSICS
(Abridged) Our deep multiwavelength campaign on NGC 5548 revealed an unusually strong X-ray obscuration. The resulting dramatic decrease in incident ionizing flux allowed us to construct a comprehensive physical, spatial and temporal picture for the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5db101c4b8507de340ef055925eea171
https://hdl.handle.net/1887/48411
https://hdl.handle.net/1887/48411
Autor:
Tahir Yaqoob, D. M. Crenshaw, Ian M. George, S. B. Kraemer, R. L. J. van der Meer, K. C. Steenbrugge, Nahum Arav, Jelle Kaastra, D. A. Liedahl, F. B. S. Paerels, T. J. Turner
Publikováno v:
Astronomy & Astrophysics. 434:569-584
We present the results from a 500 ks Chandra observation of the Seyfert 1 galaxy NGC 5548. We detect broadened emission lines of O VII and C VI in the spectra, similar to those observed in the optical and UV bands. The source was continuously variabl
Autor:
J. S. Kaastra, A. J. J. Raassen, R. Mewe, N. Arav, E. Behar, E. Costantini, J. R. Gabel, G. A. Kriss, D. Proga, M. Sako, K. C. Steenbrugge
Publikováno v:
Astronomy & Astrophysics, 428, 57-66. EDP Sciences
One of the main problems in modeling the ionised outflows in Active Galactic Nuclei is the unknown distance of the outflowing wind to the central source. Only if the density is known this distance can be determined through the ionisation parameter. H
Autor:
Gerard A. Kriss, S. M. Kahn, Masao Sako, Jelle Kaastra, M. J. Page, Ehud Behar, Graziella Branduardi-Raymont, K. C. Steenbrugge, A. J. Blustin
Publikováno v:
Astronomy & Astrophysics. 403:481-492
We present an XMM-Newton observation of NGC 7469, including studies of the X-ray and UV variability, 0.2-10 keV spectral continuum, Fe K-alpha emission line and the first-ever high-resolution X-ray spectrum of the soft X-ray warm absorber. We compare
Autor:
J S, Kaastra, G A, Kriss, M, Cappi, M, Mehdipour, P-O, Petrucci, K C, Steenbrugge, N, Arav, E, Behar, S, Bianchi, R, Boissay, G, Branduardi-Raymont, C, Chamberlain, E, Costantini, J C, Ely, J, Ebrero, L, Di Gesu, F A, Harrison, S, Kaspi, J, Malzac, B, De Marco, G, Matt, K, Nandra, S, Paltani, R, Person, B M, Peterson, C, Pinto, G, Ponti, F, Pozo Nuñez, A, De Rosa, H, Seta, F, Ursini, C P, de Vries, D J, Walton, M, Whewell
Publikováno v:
Science (New York, N.Y.). 345(6192)
Supermassive black holes in the nuclei of active galaxies expel large amounts of matter through powerful winds of ionized gas. The archetypal active galaxy NGC 5548 has been studied for decades, and high-resolution x-ray and ultraviolet (UV) observat
Autor:
C. Westhues, K. C. Steenbrugge, M. Murphy, Roland Lemke, Michael Ramolla, M. Haas, R. Chini, F. Pozo Nuñez, Wolfram Kollatschny, C. Bruckmann
We consider photometric reverberation mapping, where the nuclear continuum variations are monitored via a broad-band filter and the echo of emission line clouds of the broad line region (BLR) is measured with a suitable narrow-band (NB) filter. We in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::618a808d891b1dbe3814330d63c82fc2
http://resolver.sub.uni-goettingen.de/purl?gs-1/10929
http://resolver.sub.uni-goettingen.de/purl?gs-1/10929
Autor:
Michael Ramolla, Roland Lemke, M. Haas, C. Bruckmann, C. Westhues, K. C. Steenbrugge, F. Pozo Nuñez, R. Chini, M. Murphy
We present photometric reverberation mapping of the narrow-line Seyfert 1 galaxy ESO399-IG20 performed with the robotic 15 cm telescope VYSOS-6 at the Cerro Armazones Observatory. Through the combination of broad- and narrow-band filters we determine
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b9d3fe01bdc80ffb02878917d37690a2
http://arxiv.org/abs/1303.3653
http://arxiv.org/abs/1303.3653