Table 3
Spherical accretion model parameters (ne,∞ and T∞) with the corresponding mass accretion rate (Eq. (2)), the speed of sound at infinity, and the Faraday rotation measures (RM) for assumed radial, coherent, moderate (β = 1), and weak (β = 107) magnetic fields.
| ρ∞ | T∞ | Ṁ | cs,∞ | RMGC (β = 1) | RMGC (β = 107) | RMPulsar (β = 1) | RMPulsar (β = 100) |
| [cm-3] | [keV] | [M⊙ yr-1] | [cm s-1] | [rad/m2] | [rad/m2] | [rad/m2] | [rad/m2] |
|
|
|||||||
| 1 | 1 | 4.6 × 10-7 | 3.9 × 107 | 4.4 × 108 | 1.4 × 105 | 4.5 × 102 | 40 |
| 1 | 3.5 | 7.1 × 10-8 | 7.4 × 107 | 2.6 × 107 | 8.4 × 103 | 6.6 × 102 | 70 |
| 1 | 4 | 5.8 × 10-8 | 7.9 × 107 | 2.0 × 107 | 6.2 × 103 | 7.1 × 102 | 70 |
| 1 | 5 | 4.1 × 10-8 | 8.9 × 107 | 1.2 × 107 | 3.8 × 103 | 7.8 × 102 | 80 |
| 1 | 6 | 3.1 × 10-8 | 9.7 × 107 | 7.9 × 106 | 2.5 × 103 | 8.4 × 102 | 80 |
| 1 | 8 | 2.0 × 10-8 | 1.1 × 108 | 4.1 × 106 | 1.3 × 103 | 9.6 × 102 | 1.0 × 102 |
| 1 | 16 | 7.2 × 10-9 | 1.5 × 108 | 9.0 × 105 | 3.0 × 102 | 1.3 × 103 | 1.3 × 102 |
|
|
|||||||
| 18.3 | 3.5 | 1.3 × 10-6 | 7.4 × 107 | 2.1 × 109 | 6.6 × 105 | 5.2 × 104 | 5.2 × 103 |
| 18.4 | 3.5 | 1.3 × 10-6 | 7.4 × 107 | 2.1 × 109 | 6.6 × 105 | 5.3 × 104 | 5.3 × 103 |
|
|
|||||||
| 35 | 1 | 1.6 × 10-5 | 3.9 × 107 | 9.1 × 1010 | 2.9 × 107 | 9.3 × 104 | 9.3 × 103 |
| 35 | 3.5 | 2.4 × 10-6 | 7.4 × 107 | 5.5 × 109 | 1.7 × 106 | 1.4 × 105 | 1.4 × 104 |
| 35 | 4 | 2.0 × 10-6 | 7.9 × 107 | 4.1 × 109 | 1.3 × 106 | 1.5 × 105 | 1.5 × 104 |
| 35 | 5 | 1.4 × 10-6 | 8.9 × 107 | 2.5 × 109 | 7.8 × 105 | 1.6 × 105 | 1.6 × 104 |
| 35 | 6 | 1.1 × 10-6 | 9.7 × 107 | 1.6 × 109 | 5.2 × 105 | 1.7 × 105 | 1.7 × 104 |
| 35 | 8 | 7.2 × 10-7 | 1.1 × 108 | 8.6 × 108 | 2.7 × 105 | 2.0 × 105 | 2.0 × 104 |
| 35 | 16 | 2.5 × 10-7 | 1.5 × 108 | 1.8 × 108 | 5.8 × 104 | 2.8 × 105 | 2.8 × 104 |
|
|
|||||||
| 60 | 1 | 2.8 × 10-5 | 3.9 × 107 | 2.0 × 1011 | 6.4 × 107 | 2.1 × 105 | 2.1 × 104 |
| 60 | 3.5 | 4.2 × 10-6 | 7.4 × 107 | 1.2 × 1010 | 3.9 × 106 | 3.1 × 105 | 3.1 × 104 |
| 60 | 4 | 3.4 × 10-6 | 7.9 × 107 | 9.1 × 109 | 2.9 × 106 | 3.3 × 105 | 3.3 × 104 |
| 60 | 5 | 2.5 × 10-6 | 8.9 × 107 | 5.5 × 109 | 1.7 × 106 | 3.6 × 105 | 3.6 × 104 |
| 60 | 6 | 1.9 × 10-6 | 9.7 × 107 | 3.7 × 109 | 1.2 × 106 | 3.9 × 105 | 3.9 × 104 |
| 60 | 8 | 1.2 × 10-6 | 1.1 × 108 | 1.9 × 109 | 6.1 × 105 | 4.4 × 105 | 4.5 × 104 |
| 60 | 16 | 4.6 × 10-7 | 1.5 × 108 | 4.1 × 108 | 1.3 × 105 | 6.2 × 105 | 6.2 × 104 |
Notes. Columns 5 and 6 show RM GC computed towards the Galactic centre, while Cols. 7 and 8 represent RMPulsar computed towards pulsar PSR J1745-2900, located 3′′ away from Sgr A* in the projected distance. For comparison, the measured value of RM
rad/m2 (Marrone et al. 2007), and RM
rad/m2 (Eatough et al. 2013).
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