Timeline for Understanding the notion of lose or win of angular momentum in accretion disk
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
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| May 3, 2019 at 19:29 | comment | added | thunderbolt | No, $v_\phi$ does not remain constant. The answer by @BowlofRed explains it well. | |
| May 3, 2019 at 18:02 | comment | added | user87745 | Hello, could you take a look please quickly at my UPADTE1 ? thanks | |
| May 2, 2019 at 15:21 | vote | accept | CommunityBot | ||
| May 2, 2019 at 15:20 | comment | added | user87745 | thanks, I will to take a look on the link to understand better the 2 possible motions for the mass of a given ring : motion to lower orbit and motion to upper orbit. Regards | |
| May 2, 2019 at 14:56 | comment | added | thunderbolt | Yes, the molecular viscosity alone would not sufficient to drive the angular momentum transport. Earlier models attributed this to turbulence enhanced viscosity but there were problems understanding the origin of turbulence in the disks since it is mostly a laminar flow. Current paradigm is the Magnetorotational Instability. Have a look here: en.wikipedia.org/wiki/Magnetorotational_instability | |
| May 2, 2019 at 13:49 | comment | added | user87745 |
thanks for your explantation : what do you think about the remarks of above Farcher's answer : your reasoning seems to be correct, especially when you say that disk gains kinetic energy (even friction forces are not conservative , I mena the total energy is not constant). Also, when you say this is not mediated by a process as simple as molecular friction, you mean that others processes occurs like Magneto instability" to explain this transfer of angular momentum ? Regards
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| May 2, 2019 at 9:40 | history | edited | thunderbolt | CC BY-SA 4.0 |
added 45 characters in body
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| May 2, 2019 at 9:34 | history | answered | thunderbolt | CC BY-SA 4.0 |