S
Stefanie Komossa
Researcher at Max Planck Society
Publications - 274
Citations - 11602
Stefanie Komossa is an academic researcher from Max Planck Society. The author has contributed to research in topics: Galaxy & Active galactic nucleus. The author has an hindex of 48, co-authored 260 publications receiving 10491 citations. Previous affiliations of Stefanie Komossa include Kavli Institute for Theoretical Physics & Ruhr University Bochum.
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Journal ArticleDOI
The man behind the curtain: x-rays drive the uv through nir variability in the 2013 active galactic nucleus outburst in ngc 2617
Benjamin J. Shappee,J. L. Prieto,Dirk Grupe,Christopher S. Kochanek,Krzysztof Z. Stanek,G. De Rosa,Smita Mathur,Ying Zu,Bradley M. Peterson,Richard W. Pogge,Stefanie Komossa,Myungshin Im,Jacob Jencson,T W-S Holoien,U. Basu,John F. Beacom,D. M. Szczygiel,Joseph Brimacombe,Scott M. Adams,Abdo Campillay,Changsu Choi,Carlos Contreras,M. Dietrich,M. Dubberley,M. Elphick,S. Foale,Margherita Giustini,C. Gonzalez,E. Hawkins,D. A. Howell,D. A. Howell,Eric Hsiao,Michael Koss,Karen M. Leighly,Nidia Morrell,D. Mudd,D. Mullins,Jenna M. Nugent,J. Parrent,Mark M. Phillips,G. Pojmanski,Wayne Rosing,R. Ross,David J. Sand,Donald M. Terndrup,Stefano Valenti,Stefano Valenti,Z. Walker,Yosep Yoon +48 more
TL;DR: In this article, the authors reported that NGC 2617 went through a dramatic outburst, during which its X-ray flux increased by over an order of magnitude followed by an increase of its optical/ultraviolet (UV) continuum flux.
Journal ArticleDOI
Discovery of a Binary Active Galactic Nucleus in the Ultraluminous Infrared Galaxy NGC 6240 Using Chandra
TL;DR: In this paper, the authors reported the first high-resolution imaging spectroscopy of NGC 6240 in X-rays, which revealed the AGN character of both nuclei by the detection of absorbed, hard, luminous X-ray emission and two strong neutral Fe Kα lines.
Journal ArticleDOI
Discovery of a binary AGN in the ultraluminous infrared galaxy NGC 6240 using Chandra
TL;DR: In this article, the authors reported the first high-resolution imaging spectroscopy of NGC 6240 in X-rays, which led to the discovery of two hard nuclei, coincident with the optical-IR nuclei.
Journal ArticleDOI
The Northern ROSAT All-Sky (NORAS) Galaxy Cluster Survey. I. X-Ray Properties of Clusters Detected as Extended X-Ray Sources*
Hans Böhringer,Wolfgang Voges,John P. Huchra,Brian McLean,Riccardo Giacconi,Piero Rosati,R. Burg,J. Mader,Peter Schuecker,D. Simic,Stefanie Komossa,Thomas H. Reiprich,J. Retzlaff,Joachim Trümper +13 more
TL;DR: In this article, the authors used a new X-ray source characterization technique, termed growth curve analysis (GCA), to provide more precise values for the Xray flux and source extent than obtained from the standard processing.
Journal ArticleDOI
The Northern ROSAT All-Sky (NORAS) Galaxy Cluster Survey I: X-ray Properties of Clusters Detected as Extended X-ray Sources
Hans Boehringer,Wolfgang Voges,John P. Huchra,Brian McLean,Riccardo Giacconi,Piero Rosati,R. Burg,J. Mader,Peter Schuecker,D. Simic,Stefanie Komossa,Thomas H. Reiprich,J. Retzlaff,Joachim E. Truemper +13 more
TL;DR: In this paper, a sample of 495 X-ray sources found to show extended Xray emission in the first processing of the ROSAT All-Sky Survey was assembled for the construction of an Xray selected sample of galaxy clusters for cosmological studies.