NYPD Arrests Cyclist for Uncovering Obscured License Plate, Lets Driver Go
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Obscured Active Galactic Nuclei and Obscured Accretion
Most of the local active galactic nucleus (AGN) population is obscured and much of the X-ray background originates in obscured AGNs. The contribution of obscured accretion to the growth of massive black holes is discussed here. The recent identific...
Obscured Accretion and Black Holes
The evidence for obscured AGN and in particular for obscured quasars is discussed. The spectrum and source modelling of the X-ray Background suggests that most massive black holes grow by obscured accretion. A possible major growth phase which is C...
Extreme nature of four blue-excess dust-obscured galaxies revealed by optical sp…
We report optical spectroscopic observations of four blue-excess dust-obscured galaxies (BluDOGs) identified by Subaru Hyper Suprime-Cam. BluDOGs are a sub-class of dust-obscured galaxies (DOGs, defined with the extremely red color $(i-[22])_{\rm AB}...
High-redshift obscured quasars
Using mid-infrared and radio criteria, we select a sample of candidate z~2 obscured quasars. Optical spectroscopy confirms about half of these as type-2 quasars, and modelling the population suggests 50-80% of the quasars are obscured. We find some...
Hot, dust-obscured galaxy - Wikipedia
formation sites of high-z Hot Dust Obscured luminous quasars. Bibcode:2024eas..conf.1655V. Media related to Hot, dust-obscured galaxies at Wikimedia Commons
Characterizing the roles of transitory obscured phases and inner torus in shapin…
The origin of obscuration in Active Galactic Nuclei (AGN) is still a matter of contention. It is unclear whether obscured AGN are primarily due to line-of-sight effects, a transitory, dust-enshrouded phase in galaxy evolution, or a combination of bot...
The evolution of obscured accretion
Our current understanding of the evolution of obscured accretion onto supermassive black holes is reviewed. We consider the literature results on the relation between the fraction of moderately obscured, Compton-thin AGN and redshift, and discuss the...
Witnessing the key early phase of quasar evolution: an obscured AGN pair in the…
We report the discovery of an active galactic nucleus (AGN) pair in the interacting galaxy system IRAS 20210+1121 at z = 0.056. An XMM-Newton observation reveals the presence of an obscured (Nh ~ 5 x 10^{23} cm^-2), Seyfert-like (L_{2-10 keV} = 4.7 x...
X-ray and Near Infrared observations of the obscured accreting pulsar IGR J18179…
IGR J18179-1621 is an obscured accreting X-ray pulsar discovered by INTEGRAL on 2012 February 29. We report on our 20 ksec Chandra-High Energy Transmission Gratings Spectrometer observation of the source performed on 2012 March 17, on two short conte...
Far-infrared properties of infrared bright dust-obscured galaxies selected with…
We investigate the star forming activity of a sample of infrared (IR)-bright dust-obscured galaxies (DOGs) that show an extreme red color in the optical and IR regime, $(i - [22])_{\rm AB} > 7.0$. Combining an IR-bright DOG sample with the flux at 22...
NuSTAR Discovery of a Compton-thick Dust-obscured Galaxy WISE J0825+3002
We report the discovery of a Compton-thick (CT) dust-obscured galaxy (DOG) at $z$ = 0.89, WISE J082501.48+300257.2 (WISE0825+3002), observed by Nuclear Spectroscopic Telescope Array (NuSTAR). X-ray analysis with the XCLUMPY model revealed that hard X...
The Obscured Fraction of Quasars at Cosmic Noon
Statistical studies of X-ray selected Active Galactic Nuclei (AGN) indicate that the fraction of obscured AGN increases with increasing redshift, and the results suggest that a significant part of the accretion growth occurs behind obscuring material...
La Vallée (film) - Wikipedia
release the soundtrack album as Obscured by Clouds, rather than La Vallée. In response, the film was retitled La Vallée (Obscured by Clouds) on its release
A rich bounty of AGN in the 9 square degree Bootes survey: high-z obscured AGN a…
We use observations from the 9 square degree multiwavelength survey in Bootes to identify hundreds of obscured active galactic nuclei (AGN) with high redshifts (z > 0.7), luminosities (L_bol > 10^45 ergs/s), and moderate obscuring columns (N_H > 10...
Obscured by Clouds - Wikipedia
Obscured by Clouds is the seventh studio album, and second soundtrack album, by the English progressive rock band Pink Floyd, released on 2 June 1972 by
Obscured GOODS AGN and Their Host Galaxies at z < 1.25: The Slow Black Hole Grow…
We compute black hole masses and bolometric luminosities for 87 obscured AGN in the redshift range 0.25 < z < 1.25, selected from the GOODS deep multi-wavelength survey fields via their X-ray emission. We fit the optical images and obtain morphologic...
The incidence of obscuration in active galactic nuclei
We study the incidence of nuclear obscuration on a complete sample of 1310 AGN selected on the basis of their rest-frame 2-10 keV X-ray flux from the XMM-COSMOS survey, in the redshift range 0.3<z<3.5. We classify the AGN as obscured or un-obscured o...
Obscured AGN in Multiwavelength Surveys
Using a simple unification model for AGN, with a fixed ratio of obscured to unobscured AGN of 3:1, we explain the X-ray, optical and infrared properties of the X-ray sources in the GOODS fields. That is, the GOODS data are consistent with the exist...
A Census of the Most Obscured Galaxy Nuclei over Cosmic Time to be revealed by P…
Characterizing the growth of supermassive Black Holes (SMBHs) is critical to the evolution of galaxies, however the majority of this activity is obscured, rendering traditional tracers of active SMBHs, such as in the restframe optical/UV, ineffective...