The spectral energy distribution of the low-luminosity AGN NGC 3115
| Full text | |
| Author(s): |
Nemmen, Rodrigo
;
Vemado, Artur
;
Almeida, Ivan
;
Garcia, Javier
;
Motta, Pedro N.
Total Authors: 5
|
| Document type: | Journal article |
| Source: | Monthly Notices of the Royal Astronomical Society; v. 531, n. 1, p. 10-pg., 2024-05-17. |
| Abstract | |
Stellar mass black holes in X-ray binaries (XRBs) are known to display different states characterized by different spectral and timing properties, understood in the framework of a hot corona coexisting with a thin accretion disc whose inner edge is truncated. There are several open questions related to the nature and properties of the corona, the thin disc, and dynamics behind the hard state. This motivated us to perform 2D hydrodynamical simulations of accretion flows onto a 10M(circle dot) black hole. We consider a two-temperature plasma, incorporate radiative cooling with bremmstrahlung, synchrotron, and Comptonization losses and approximate the Schwarzschild space-time via a pseudo-Newtonian potential. We varied the mass accretion rate in the range 0.02 <= M/M-Edd <= 0.35. Our simulations show the natural emergence of a colder truncated thin disc embedded in a hot corona, as required to explain the hard state of XRBs. We found that as M increases, the corona contracts and the inner edge of the thin disc gets closer to the event horizon. At a critical accretion rate 0.02 <= M-erit /M-Edd <= 0.06, the thin disc disappears entirely. We discuss how our simulations compare with XRB observations in the hard state. (AU) | |
| FAPESP's process: | 21/01563-5 - Simulating black hole binaries |
| Grantee: | Pedro Naethe Motta |
| Support Opportunities: | Scholarships in Brazil - Master |
| FAPESP's process: | 22/10460-8 - Unveiling how black hole jets are born and sustained |
| Grantee: | Rodrigo Nemmen da Silva |
| Support Opportunities: | Scholarships abroad - Research |
| FAPESP's process: | 17/01461-2 - The extreme universe: black holes and the Fermi telescope |
| Grantee: | Rodrigo Nemmen da Silva |
| Support Opportunities: | Research Grants - Young Investigators Grants |
| FAPESP's process: | 22/07456-9 - Simulating galactic black hole binaries |
| Grantee: | Pedro Naethe Motta |
| Support Opportunities: | Scholarships abroad - Research Internship - Master's degree |
| FAPESP's process: | 17/25710-1 - Radiative cooling in black hole accretion flows |
| Grantee: | Artur Vemado |
| Support Opportunities: | Scholarships in Brazil - Master |
| FAPESP's process: | 19/10054-7 - Black hole winds and feedback |
| Grantee: | Ivan Carlos de Almeida |
| Support Opportunities: | Scholarships in Brazil - Doctorate |