Journal article
First-principles Measurement of Ion and Electron Energization in Collisionless Accretion Flows
- Abstract:
- We present the largest 3D particle-in-cell shearing-box simulations of turbulence driven by the magnetorotational instability, for the first time employing the realistic proton-to-electron mass ratio. We investigate the energy partition between relativistically hot electrons and subrelativistic ions in turbulent accreting plasma, a regime relevant to collisionless, radiatively inefficient accretion flows around supermassive black holes such as those targeted by the Event Horizon Telescope. We provide a simple empirical formula to describe the measured heating ratio between ions and electrons, which can be used for more accurate global modeling of accretion flows with standard fluid approaches such as general-relativistic magnetohydrodynamics.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
Actions
Access Document
- Files:
-
-
(Preview, Version of Record, Version of record, pdf, 871.7KB, Terms of use)
-
- Publisher copy:
- 10.3847/2041-8213/adbca4
Authors
- Publisher:
- American Astronomical Society
- Journal:
- The Astrophysical Journal Letters More from this journal
- Volume:
- 982
- Issue:
- 1
- Article number:
- L28
- Publication date:
- 2025-03-19
- Acceptance date:
- 2025-03-05
- DOI:
- EISSN:
-
2041-8213
- ISSN:
-
2041-8205
- Language:
-
English
- Keywords:
- Source identifiers:
-
2784838
- Deposit date:
-
2025-03-19
This ORA record was generated from metadata provided by an external service. It has not been edited by the ORA Team.
If you are the owner of this record, you can report an update to it here: Report update to this record