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Table A.1.
Model parameters and their meaning.
| large scale disk | CND | NGC 1068 | |
|---|---|---|---|
| vrot(20 pc) | 100 km s−1 | 100 km s−1 | rotation velocity |
| (Guesten et al. 1987; Hicks et al. 2009) | |||
| vA, 0 | 1.0 km s−1 | 1.5 km s−1 | Alfven velocity (Vollmer & Davies 2013) |
| Mdyn(20 pc) | 4.4 × 107 M⊙ | 4.4 × 107 M⊙ | total enclosed (dynamical) mass |
| (Genzel et al. 2010; Hicks et al. 2009) | |||
| Mgas | 4.5 × 104 M⊙ | 3.6 × 105 M⊙ | total gas mass (this work) |
| vturb | 20 km s−1 | 50 km s−1 | gas turbulent velocity dispersion |
| (Guesten et al. 1987; Hicks et al. 2009) | |||
| Q | 300 | 30 | disk Toomre parameter (Eq. A.1) |
| Ṁ | 3.8 M⊙yr−1 | 2 × 10−3 M⊙yr−1 | disk mass accretion rate (this work) |
| η | 0.1 | 0.1 | dissipated energy fraction per cloud-cloud |
| collision (Sect. 2.1) | |||
| α | 3.7 × 1013 cm3s−1g−1 | 3.7 × 1013 cm3s−1g−1 | gas particle collision coefficient |
| (Draine 1983) | |||
| γ |
 |
 |
ion-neutral coupling |
| (Williams et al. 1998, McKee et al. 2010) | |||
| ζCR | 2 × 10−15 s−1 | 2 × 10−13 s−1 | cosmic ray ionization rate |
| (Yusef-Zadeh et al. 2013, this work) | |||
| LX | 0 | 5 × 1043 erg s−1 | X-ray luminosity (Bauer et al. 2015) |
| MBH | 4 ×106 M⊙ | 1 ×107 M⊙ | black hole mass (Genzel et al. 2010 |
| Greenhill et al. 1996) | |||
| R | galactic radius | ||
| Ω | angular velocity | ||
| ρ | disk midplane density | ||
| Σ | disk surface density | ||
| H | disk height | ||
| ldriv | turbulent driving lengthscale | ||
| ΦV | cloud volume filling factor (Eq. A.5) | ||
| ΦA | cloud area filling factor (Eq. A.8) | ||
| xi | ionization fraction (Eq. A.4) | ||
| ζX | X-ray ionization rate (Eq. 10) | ||
| Γg | gas heating rate (Eq. 5) | ||
| Γturb | turbulent heating rate (Eq. 6) | ||
| ΓCR | cosmic ray heating rate (Eq. 8) | ||
| ΓX | X-ray heating rate (Eq. 7) | ||
| HX | X-ray energy deposition rate per | ||
| particle (Eq. 9) | |||
| small scale clouds | |||
| rsh | compression rate of the C-shock (Eq. A.2) | ||
| Mcl | cloud mass | ||
| rcl | cloud radius (Eq. A.3) | ||
| lcl | cloud size | ||
| ρcl | cloud density | ||
| Ncl | cloud surface density | ||
| cs | local sound speed | ||
 |
cloud free fall time | ||
| Tg | gas temperature | ||
| B | magnetic field | ||
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