Zobrazeno 1 - 10
of 36
pro vyhledávání: '"David S. De Young"'
Publikováno v:
The Astrophysical Journal. 618:609-617
A Chandra ACIS-S observation of PKS 2152-699 reveals thermal emission from a diffuse region around the core and a hotspot located 10" northeast from the core. This is the first detection of thermal X-ray radiation on kiloparsec scales from an extraga
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4de7e0467af825d9933d11a8c1cd2e71
https://doi.org/10.1086/426011
https://doi.org/10.1086/426011
Autor:
David S. De Young
Publikováno v:
The Astrophysical Journal. 507:161-172
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33ac1b5fcf6a9717f7aef8e65de1659f
https://doi.org/10.1086/306307
https://doi.org/10.1086/306307
Publikováno v:
The Astrophysical Journal. 496:803-807
We present BVRIK images and photometry of the z = 1.175 radio galaxy 3C 65 and its extended blue companion, along with a 6 cm radio map. These data are used to test the hypotheses that the companion is scattering the continuum of a hidden active nucl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26704662eae9eebe4b5b17d8371917c1
https://doi.org/10.1086/305430
https://doi.org/10.1086/305430
Autor:
David S. De Young
Publikováno v:
The Astrophysical Journal. 490:L55-L58
Readhead et al. have recently proposed that compact symmetric objects (CSOs) evolve into larger double sources many kiloparsecs in extent. They propose a detailed empirical model based on recent VLBI survey data that suggest a non-self-similar evolut
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a552be6c80596ffefb0004eafeb4b774
https://doi.org/10.1086/311002
https://doi.org/10.1086/311002
Publikováno v:
Solar Physics. 145:207-225
It is thought that the large-scale solar-cycle magnetic field is generated in a thin region at the interface of the radiative core (RC) and solar convection zone (SCZ). We show that the bulk of the SCZ virogoursly generates a small-scale turbulent ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::37f94bd589a37adebabf63ffd86fa0cf
https://doi.org/10.1007/bf00690652
https://doi.org/10.1007/bf00690652
Autor:
David S. De Young
Radio AGN feedback is often assumed to work, but detailed physical models of this process are not well developed. This paper examines a possible path for radio AGN feedback to heat the gas in and around galaxies and perhaps suppress star formation. N
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6370b8ec448cec710ddd755dbf10b28e
Publikováno v:
AIP Conference Proceedings.
In order to reproduce observational data, current cosmologies require some mechanism to suppress star formation in massive galaxies at the current epoch; this is usually accomplished by some form of energy “feedback” into the gas around galaxies.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::14eeda0cbe0f0e581f920a47f274fda2
https://doi.org/10.1063/1.3293049
https://doi.org/10.1063/1.3293049
Publikováno v:
AIP Conference Proceedings.
We present the results of numerical models of bubble dynamics and morphology in magnetized galaxy cluster environments. Our set of simulations follows the evolution of initially spherical bubbles that rise buoyantly through the intracluster medium. A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6c5951228d1db4d7db3e06cdc8ca565
https://doi.org/10.1063/1.3293072
https://doi.org/10.1063/1.3293072
Autor:
David S. De Young
Recent x-ray and radio data from radio sources in galaxy clusters are used to show that the pdV work required to inflate the radio lobes exceeds all other energy estimates deduced from the radio emission. If the required jet energy density has an iso
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ea7e1b8286b60c556dfaa8be6b6246f5
Autor:
David S. De Young
Publikováno v:
Physics of Fluids. 9:2168-2170
A simple analytic model based on experimental data is presented for the growth of large scale structures and the mass inflow into them in two-dimensional incompressible mixing layers. The model draws on the experimental evidence for persistent large
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e81ec07c9f913e75dc8dd29b45758bf2
https://doi.org/10.1063/1.869339
https://doi.org/10.1063/1.869339