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The bell laboratories H I survey
- A. Stark, A. Stark, +5 authors M. Hurwitz
- Physics
- 1 March 1992
We present a galactic survey which to date consists of 73,000 positions covering −5° < l < 122°, −1° < b < 1° , observed in the J=1 → 0 line of 13CO to an rms noise level of 0.15 K in 0.68 km s−1…
Nonlinear Outcome of Gravitational Instability in Cooling, Gaseous Disks
- C. Gammie
- Physics
- 28 January 2001
Thin, Keplerian accretion disks generically become gravitationally unstable at large radii. I investigate the nonlinear outcome of such instability in cool disks using razor-thin, local, numerical…
Black Hole Spin Evolution
- C. Gammie, S. Shapiro, J. Mckinney
- Physics
- 30 October 2003
We consider a subset of the physical processes that determine the spin j ≡ a/M of astrophysical black holes. These include (1) Initial conditions. Recent models suggest that the collapse of a…
HARM: A NUMERICAL SCHEME FOR GENERAL RELATIVISTIC MAGNETOHYDRODYNAMICS
- C. Gammie, J. Mckinney, G. T'oth
- Physics
- 25 January 2003
We describe a conservative, shock-capturing scheme for evolving the equations of general relativistic magnetohydrodynamics. The fluxes are calculated using the Harten, Lax, & van Leer scheme. A…
A gas cloud on its way towards the supermassive black hole at the Galactic Centre
- S. Gillessen, R. Genzel, +9 authors T. Ott
- Physics, MedicineNature
- 14 December 2011
TLDR
Nonlinear outcome of gravitational instability in disks with realistic cooling
- Bryan M. Johnson, C. Gammie
- Physics
- 1 November 2003
We consider the nonlinear outcome of gravitational instability in optically thick disks with a realistic cooling function. We use a numerical model that is local, razor thin, and unmagnetized.…
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