Results 131 to 140 of about 4,173,094 (217)
JWST Resolves Jet-driven H2 and Ionized Outflows in Radio Galaxy 3C 305
The Astrophysical JournalWe present JWST MIRI medium-resolution spectrometer (MRS), NIRSpec, NIRCam, and MIRI imaging observations of 3C 305, a radio galaxy with a compact jet that is confined within the galaxy. We utilize the H _2 0–0 S(1)–S(7) lines, several mid-infrared (MIR)
Biny Sebastian +19 more
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The Astrophysical Journal Supplement SeriesWe present a wide-area and deep optical identification catalog for radio sources based on the Very Large Array Sky Survey (VLASS) Epoch 2 catalog at 3 GHz.
Hisakazu Uchiyama +13 more
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Supplementary material to DESI's publication "Beyond Traditional Diagnostics: Identifying Active Galactic Nuclei with Spectral Energy Distribution Fitting in DESI Data" to comply with the data management plan.
Siudek, Malgorzata
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Deciphering Radio Emissions from Accretion Disk Winds in Radio-quiet Active Galactic Nuclei
The Astrophysical JournalUnraveling the origins of radio emissions from radio-quiet active galactic nuclei (RQ AGNs) remains a pivotal challenge in astrophysics. One potential source of this radiation is the shock interaction between AGN disk winds and the interstellar medium ...
Tomoya Yamada +3 more
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The Astrophysical JournalBased on the magnetization, an accretion disk with a large-scale magnetic field can be separated into either standard and normal evolution or magnetically arrested disk (MAD), which are difficult to identify from observations. It is still unclear whether
Shuang-Liang Li, Wenwen Zuo, Xinwu Cao
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Systematic Monitoring of Extreme X-Ray Variability from Weak-line Quasars
The Astrophysical JournalWe present the results of a multicycle Chandra program to systematically monitor the X-ray variability of 10 weak-line quasars (WLQs) that previously had limited multiepoch X-ray observations.
Madison Reich +7 more
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Constraining Star Formation in M87 Using Deep Hubble Space Telescope UV Data
The Astrophysical JournalWe analyzed the deepest Hubble Space Telescope F275W ultraviolet (UV) imaging of M87 to obtain the most robust constraints on its star formation rate (SFR) and star formation history (SFH).
Prathamesh Tamhane +13 more
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DUST IN ACTIVE GALACTIC NUCLEI: ANOMALOUS SILICATE TO OPTICAL EXTINCTION RATIOS?
, 2014 Dust plays a central role in the unification theory of active galactic nuclei (AGNs). However, little is known about the nature (e.g., size, composition) of the dust that forms a torus around the AGN. In this Letter, we report a systematic exploration of
Lyu, Jianwei, Hao, Lei, Li, Aigen
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Revisiting Radio Variability of the Blazar 3C 454.3
The Astrophysical JournalWe examine lengthy radio light curves of the flat spectrum radio galaxy 3C 454.3 for possible quasiperiodic oscillations (QPOs). The data used in this work were collected at five radio frequencies, 4.8, 8.0, 14.5, 22.0, and 37.0 GHz between 1979 and 2013
Ashutosh Tripathi +9 more
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RAiSERed: radio continuum redshifts for lobed active galactic nuclei
, 2020 Next-generation radio surveys are expected to detect tens of millions of active galactic nuclei (AGNs) with a median redshift of ≥ 1. Beyond targeted surveys, the vast majority of these objects will not have spectroscopic redshifts, while photometric ...
Seymour, N (15552026) +3 more
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