Zobrazeno 1 - 10
of 127
pro vyhledávání: '"Colgate, Stirling A."'
Publikováno v:
ApJL v741, L15, Nov2011
We present radio emission, polarization, and Faraday rotation maps of the radio jet of the galaxy 3C303. From this data we derive the magnetoplasma and electrodynamic parameters of this 50 kpc long jet. For a {$\sim 2$} kpc segment of this jet we obt
Externí odkaz:
http://arxiv.org/abs/1106.1397
Autor:
Colgate, Stirling A., Li, Hui, Pariev, Vladimir, Finn, John, Beckley, Howard, Si, Jiahe, Martinic, Joe, Westpfahl, David, Slutz, James, Westrom, Cebastian, Klein, Brianna, Schendel, Paul, Scharle, Cletus, McKinney, Travis, Ginanni, Rocky, Bentley, Ian, Mickey, Timothy, Ferrel, Ragnar
The $\Omega$-phase of the liquid sodium $\alpha$-$\Omega$ dynamo experiment at NMIMT in cooperation with LANL has successfully demonstrated the production of a high toroidal field, $B_{\phi} \simeq 8\times B_r$ from the radial component of an applied
Externí odkaz:
http://arxiv.org/abs/1011.4029
Publikováno v:
Astrophys.J.658:129-160,2007
It is shown that a dynamo can operate in an Active Galactic Nuclei accretion disk due to the Keplerian shear and due to the helical motions of expanding and twisting plumes of plasma heated by many star passages through the disk. Each plume rotates a
Externí odkaz:
http://arxiv.org/abs/astro-ph/0611188
Publikováno v:
Astrophys.J.658:114-128,2007
A magnetic field dynamo in the inner regions of the accretion disk surrounding the supermassive black holes in AGNs may be the mechanism for the generation of magnetic fields in galaxies and in extragalactic space. We argue that the two coherent moti
Externí odkaz:
http://arxiv.org/abs/astro-ph/0611139
Autor:
Colgate, Stirling A., Li, Hui
Publikováno v:
C.R.Acad.Sci.IV Phys.Astrophys. 5 (2004) 431-440
We propose that nearly every accelerated CR was part of the parallel current that maintains all force-free (f-f) magnetic fields. Charged particles are accelerated by the E-parallel (to the magnetic filed B) produced by reconnection. The inferred tot
Externí odkaz:
http://arxiv.org/abs/astro-ph/0509054
Publikováno v:
Astrophys.J. 598 (2003) L7-L10
A scenario is put forth for the formation of supermassive black holes at the centers of galaxies. It depends upon the formation of a Mestel disk with a flat rotation curve, where the mass is proportional to r and thickness to 1/r. Such disks should f
Externí odkaz:
http://arxiv.org/abs/astro-ph/0310776
Autor:
Colgate, Stirling A., Li, Hui
Recent rotation measure observations of a dozen or so galaxy clusters have revealed a surprisingly large amount of magnetic fields, whose estimated energy and flux are, on average, $\sim 10^{58}$ ergs and $\sim 10^{41}$ G cm$^2$, respectively. These
Externí odkaz:
http://arxiv.org/abs/astro-ph/0001418
The mechanism for efficient and coherent angular momentum transport remains one of the unsolved puzzles in astrophysics despite the enormous efforts that have been made. We suggest that important new insight could be gained in this problem through an
Externí odkaz:
http://arxiv.org/abs/astro-ph/9909022
Autor:
Hahn, Paul, Qian, Ying, Dentchev, Tzvete, Chen, Lin, Beard, John, Harris, Zena Leah, Dunaief, Joshua L., Colgate, Stirling A.
Publikováno v:
Proceedings of the National Academy of Sciences of the United States of America, 2004 Sep . 101(38), 13850-13855.
Externí odkaz:
https://www.jstor.org/stable/3373297
Publikováno v:
Astrophys.J. 435 (1994) 339
Condensed Abstract: We present an extensive study of the inception of supernova explosions by following the evolution of the cores of two massive stars (15 Msun and 25 Msun) in two dimensions. Our calculations begin at the onset of core collapse and
Externí odkaz:
http://arxiv.org/abs/astro-ph/9404024