Results 1 to 10 of about 3,454,371 (195)

PEARLS: Discovery of Point-source Features within Galaxies in the North Ecliptic Pole Time Domain Field

The Astrophysical Journal
The first public 0.9–4.4 μ m NIRCam images of the North Ecliptic Pole Time Domain Field uncovered galaxies displaying point-source features in their cores as seen in the longer-wavelength filters. We visually identified a sample of 66 galaxies (∼1 galaxy
Rafael Ortiz III, Rogier A. Windhorst, Seth H. Cohen, Steven P. Willner, Rolf A. Jansen, Timothy Carleton, Patrick S. Kamieneski, Michael J. Rutkowski, Brent M. Smith, Jake Summers, Cheng Cheng, Dan Coe, Christopher J. Conselice, Jose M. Diego, Simon P. Driver, Jordan C. J. D’Silva, Brenda L. Frye, Hansung B. Gim, Norman A. Grogin, Heidi B. Hammel, Nimish P. Hathi, Benne W. Holwerda, Minhee Hyun, Myungshin Im, William C. Keel, Anton M. Koekemoer, Juno Li, Madeline A. Marshall, Tyler J. McCabe, Noah J. McLeod, Stefanie N. Milam, Rosalia O’Brien, Nor Pirzkal, Aaron S. G. Robotham, Russell E. Ryan Jr., Christopher N. A. Willmer, Haojing Yan, Min S. Yun, Adi Zitrin   +38 more
doaj   +1 more source

ABSTRACTS

Precision Radiation Oncology, EarlyView.
wiley   +1 more source

Mid-infrared Variability in Nearby Galaxies from the MaNGA Sample

The Astrophysical Journal
We use mid-infrared variability in galaxies to search for active galactic nuclei (AGN) in the local universe. We use a sample of 10,220 galaxies from the Mapping Nearby Galaxies at Apache Point Observatory survey, part of the Sloan Digital Sky Survey ...
Aashay Pai, Michael R. Blanton, John Moustakas   +2 more
doaj   +1 more source

A Catalog of Broad Hα and Hβ Active Galactic Nuclei in MaNGA

The Astrophysical Journal
Broad H α and H β emission lines (FWHM > 1000 km s ^−1 ) are incredibly efficient tracers of the high-velocity clouds encircling active galactic nuclei (AGNs).
James Negus, Julia M. Comerford, Francisco Müller Sánchez   +2 more
doaj   +1 more source

Discovery of an Ultrafast Outflow and Insights into the Coronal Geometry of the Super-Eddington Active Galactic Nucleus IRAS F12397+3333

The Astrophysical Journal
We report the discovery of ultrafast outflows (UFOs) in the super-Eddington active galactic nucleus (AGN) IRAS F12397+3333, detected in both the hard- and soft-X-ray bands, and present an investigation of the coronal geometry and accretion flow ...
Deblina Lahiri, K. Sriram, Vivek K. Agrawal   +2 more
doaj   +1 more source

A Comprehensive Analysis of WISE Mid-infrared Colors for Obscured AGN Selection

The Astrophysical Journal
In this paper, we investigate the robustness of Wide-field Infrared Survey Explorer mid-IR color selection (W1 − W2) for identifying obscured (type 2) active galactic nuclei (AGNs) at low redshift ( z   0.5 selection emerges as optimal in terms of purity
Anika Goel, Samir Salim, Sara L. Ellison, Shobita Satyapal, Sheyda Salehirad, Robert W. Bickley, Christopher J. Agostino   +6 more
doaj   +1 more source

The QPO in RE J1034+396 Originates in the Hot Corona

The Astrophysical Journal
RE J1034+396 is one of the few active galactic nuclei (AGNs) with a significant quasiperiodic oscillation (QPO). The QPO has been observed in over 1 Ms of XMM-Newton observations spanning over a decade. We investigate the power spectral density function (
Chloe S. Taylor, Dan R. Wilkins, Steven W. Allen   +2 more
doaj   +1 more source

PACHA: Probing AGN Coronae with High-redshift AGN

The Astrophysical Journal
The X-ray emission of active galactic nuclei (AGN) is generally attributed to the inverse Compton scattering in a compact corona. In local AGN, directly constraining coronal properties is challenging because the key spectral signature, the high-energy ...
Xiurui Zhao, Elias Kammoun, Marco Ajello, Yanfei Jiang, Giorgio Lanzuisi, Anne Lohfink, Stefano Marchesi, Elena Bertola, Peter G. Boorman, Francesca Civano, Luca Comisso, Paolo Coppi, Isaiah S. Cox, Martin Elvis, Roberto Gilli, Fiona A. Harrison, Ross Silver, Daniel Stern, Nuria Torres-Albà, Qian Yang, Lizhong Zhang   +20 more
doaj   +1 more source

VLA FRAMEx. III. Circumnuclear Radio Emission Mechanisms in Hard X-Ray Selected Active Galactic Nuclei

The Astrophysical Journal
We present Stokes I continuum analysis for a volume-limited sample (
Andrew J. Sargent, Alexander J. van der Horst, Megan C. Johnson, Nathan J. Secrest, Travis C. Fischer, Onic I. Shuvo, Macon A. Magno, Luis C. Fernandez   +7 more
doaj   +1 more source

VLA FRAMEx. II. Radio Spectra of Nearby Active Galactic Nuclei at Subarcsecond Resolution

The Astrophysical Journal
We present 4–12 GHz in-band spectral energy distributions with accompanying 6 GHz and 10 GHz imaging results for a volume-complete sample ( 0) spectral indices.
Andrew J. Sargent, Alexander J. van der Horst, Megan C. Johnson, Travis C. Fischer, Nathan J. Secrest, Phil J. Cigan, Onic I. Shuvo, Krista L. Smith   +7 more
doaj   +1 more source