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Full-Text Articles in Physics
Hα Reverberation Mapping Of The Intermediate-Mass Active Galactic Nucleus In Ngc 4395, Hojin Cho, Jong-Hak Woo, Tommaso Treu, Peter R. Williams, Stephen F. Armen, Aaron J. Barth, Vardha N. Bennert, Wanjin Cho, Alexei V. Filippenko, Elena Gallo, Jaehyuk Geum, Diego González-Buitrago, Kayhan Gültekin, Edmund Hodges-Kluck, John C. Horst, Seong Hyeon Hwang, Wonseok Kang, Minjin Kim, Taewoo Kim, Douglas C. Leonard, Matthew A. Malkan, Raymond P. Remigio, David J. Sand, Jaejin Shin, Donghoon Son, Hyun-Il Sung, Vivian U
Hα Reverberation Mapping Of The Intermediate-Mass Active Galactic Nucleus In Ngc 4395, Hojin Cho, Jong-Hak Woo, Tommaso Treu, Peter R. Williams, Stephen F. Armen, Aaron J. Barth, Vardha N. Bennert, Wanjin Cho, Alexei V. Filippenko, Elena Gallo, Jaehyuk Geum, Diego González-Buitrago, Kayhan Gültekin, Edmund Hodges-Kluck, John C. Horst, Seong Hyeon Hwang, Wonseok Kang, Minjin Kim, Taewoo Kim, Douglas C. Leonard, Matthew A. Malkan, Raymond P. Remigio, David J. Sand, Jaejin Shin, Donghoon Son, Hyun-Il Sung, Vivian U
Physics
We present the results of a high-cadence spectroscopic and imaging monitoring campaign of the active galactic nucleus (AGN) of NGC 4395. High signal-to-noise-ratio spectra were obtained at the Gemini-N 8 m telescope using the GMOS integral field spectrograph (IFS) on 2019 March 7 and at the Keck I 10 m telescope using the Low-Resolution Imaging Spectrometer with slit masks on 2019 March 3 and April 2. Photometric data were obtained with a number of 1 m-class telescopes during the same nights. The narrow-line region (NLR) is spatially resolved; therefore, its variable contributions to the slit spectra make the standard procedure …
A Local Baseline Of The Black Hole Mass Scaling Relations For Active Galaxies. Iv. Correlations Between MBh And Host Galaxy Σ, Stellar Mass, And Luminosity, Vardha N. Bennert, Tommaso Treu, Xuheng Ding, Isak Stomberg, Simon Birrer, Tomas Snyder, Matthew A. Malkan, Andrew W. Stephens, Matthew W. Auger
A Local Baseline Of The Black Hole Mass Scaling Relations For Active Galaxies. Iv. Correlations Between MBh And Host Galaxy Σ, Stellar Mass, And Luminosity, Vardha N. Bennert, Tommaso Treu, Xuheng Ding, Isak Stomberg, Simon Birrer, Tomas Snyder, Matthew A. Malkan, Andrew W. Stephens, Matthew W. Auger
Physics
The tight correlations between the mass of supermassive black holes (MBH) and their host-galaxy properties have been of great interest to the astrophysical community, but a clear understanding of their origin and fundamental drivers still eludes us. The local relations for active galaxies are interesting in their own right and form the foundation for any evolutionary study over cosmic time. We present Hubble Space Telescope optical imaging of a sample of 66 local active galactic nuclei (AGNs); for 14 objects, we also obtained Gemini near-infrared images. We use state-of-the-art methods to perform surface photometry of the AGN host …
Space Telescope And Optical Reverberation Mapping Project. Ix. Velocity–Delay Maps For Broad Emission Lines In Ngc 5548, Keith Horne, G. De Rosa, B. M. Peterson, A. J. Barth, Vardha N. Bennert, Y. Zu
Space Telescope And Optical Reverberation Mapping Project. Ix. Velocity–Delay Maps For Broad Emission Lines In Ngc 5548, Keith Horne, G. De Rosa, B. M. Peterson, A. J. Barth, Vardha N. Bennert, Y. Zu
Physics
In this contribution, we achieve the primary goal of the active galactic nucleus (AGN) STORM campaign by recovering velocity–delay maps for the prominent broad emission lines (Lyα, C IV, He II, and Hβ) in the spectrum of NGC 5548. These are the most detailed velocity–delay maps ever obtained for an AGN, providing unprecedented information on the geometry, ionization structure, and kinematics of the broad-line region. Virial envelopes enclosing the emission-line responses show that the reverberating gas is bound to the black hole. A stratified ionization structure is evident. The He II response inside 5–10 lt-day has a broad single-peaked velocity …
Agn Jets And A Fanciful Trio Of Black Holes In The Abell 85 Brightest Cluster Galaxy, Juan P. Madrid
Agn Jets And A Fanciful Trio Of Black Holes In The Abell 85 Brightest Cluster Galaxy, Juan P. Madrid
Physics and Astronomy Faculty Publications and Presentations
A new radio map of the Abell 85 Brightest Cluster Galaxy (BCG) was obtained with the Karl G. Jansky Very Large Array. With a resolution of 002, this radio image shows two kiloparsec-scale bipolar active galactic nucleus jets emanating from the active galactic nucleus of the A85 BCG. The galaxy core appears as a single entity on the new radio map. It has been assumed that the A85 BCG contained a binary black hole in its core. However, Chandra X-ray data and the new high-resolution radio map show no evidence that the A85 BCG harbors a binary black hole. The …