scholarly journals Active galactic nuclei as seen by the Spitzer Space Telescope

2020 ◽  
Vol 4 (4) ◽  
pp. 352-363 ◽  
Author(s):  
Mark Lacy ◽  
Anna Sajina
Keyword(s):  
Active Galactic Nuclei ◽  
Galactic Nuclei ◽  
Spitzer Space Telescope ◽  
Space Telescope

scholarly journals Obscured and Unobscured Active Galactic Nuclei in the Spitzer Space Telescope First Look Survey

2004 ◽  
Vol 154 (1) ◽  
pp. 166-169 ◽  
Author(s):  
M. Lacy ◽  
L. J. Storrie‐Lombardi ◽  
A. Sajina ◽  
P. N. Appleton ◽  
L. Armus ◽  
...  
Keyword(s):  
Active Galactic Nuclei ◽  
Galactic Nuclei ◽  
Spitzer Space Telescope ◽  
Space Telescope

scholarly journals A Hubble Space Telescope Imaging Survey of Nearby Active Galactic Nuclei

1998 ◽  
Vol 117 (1) ◽  
pp. 25-88 ◽  
Author(s):  
Matthew A. Malkan ◽  
Varoujan Gorjian ◽  
Raymond Tam
Keyword(s):  
Active Galactic Nuclei ◽  
Hubble Space Telescope ◽  
Galactic Nuclei ◽  
Space Telescope

Emission Line Properties of Active Galactic Nuclei from a Post‐COSTAR Hubble Space Telescope Faint Object Spectrograph Spectral Atlas

2004 ◽  
Vol 150 (1) ◽  
pp. 165-180 ◽  
Author(s):  
Joanna K. Kuraszkiewicz ◽  
Paul J. Green ◽  
D. Michael Crenshaw ◽  
Jay Dunn ◽  
Karl Forster ◽  
...  
Keyword(s):  
Emission Line ◽  
Active Galactic Nuclei ◽  
Hubble Space Telescope ◽  
Galactic Nuclei ◽  
Space Telescope ◽  
Faint Object ◽  
Faint Object Spectrograph

scholarly journals A Survey of Extended Radio Jets in Active Galactic Nuclei withChandraand theHubble Space Telescope: First Results

2002 ◽  
Vol 571 (1) ◽  
pp. 206-217 ◽  
Author(s):  
Rita M. Sambruna ◽  
L. Maraschi ◽  
F. Tavecchio ◽  
C. Megan Urry ◽  
C. C. Cheung ◽  
...  
Keyword(s):  
Active Galactic Nuclei ◽  
Galactic Nuclei ◽  
Space Telescope ◽  
Radio Jets ◽  
Extended Radio ◽  
First Results

scholarly journals Distinguishing AGN from starbursts as the origin of double-peaked Lyman-alpha emitters in the reionization era

2021 ◽  
Vol 646 ◽  
pp. L10
Author(s):  
Hamsa Padmanabhan ◽  
Abraham Loeb
Keyword(s):  
Active Galactic Nuclei ◽  
Peak Velocity ◽  
High Redshift ◽  
Galactic Nuclei ◽  
Radio Observations ◽  
Space Telescope ◽  
X Ray ◽  
Lyman Alpha ◽  
Alpha Emitters ◽  
Lyman Alpha Emitters

We discuss the possible origin of the double-peaked profiles recently observed in Lyman-alpha emitters (LAEs) at the epoch of reionization (z  ≳  6.5) from obscured active galactic nuclei (AGN). In combining the extent of the Lyman-α near-zones estimated from the blue peak velocity offset in these galaxies, with the ionizing emissivity of quasars at z ≳ 6, we forecast the intrinsic UV and X-ray luminosities of the AGN needed to give rise to their double-peaked profiles. We also estimate the extent of the obscuration of the AGN by comparing their luminosities to those of similar quasar samples at these epochs. Future X-ray and radio observations, as well as those with the James Webb Space Telescope, will be valuable tools to test the AGN contribution to the intergalactic-scale ionization zones of high-redshift LAEs.

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