| Name: | Priyesh Kumar Tripathi |
| Affiliation: | Aryabhatta Research Institute of Observational Sciences, Nainital |
| Conference ID: | ASI2025_364 |
| Title: | Isolated black holes accreting through dense environments |
| Authors: | Priyesh Kumar Tripathi (1,2),
Indranil Chattopadhyay (1),
Raj Kishor Joshi (1) |
| Authors Affiliation: | (1) Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, Nainital, 263001, India
(2) Department of Applied Physics, Mahatma Jyotiba Phule Rohilkhand University, Bareilly, 243006, India |
| Mode of Presentation: | Oral |
| Abstract Category: | High Energy Phenomena, Fundamental Physics and Astronomy |
| Abstract: | We investigate accretion onto an isolated black hole under two wind configurations: (a) uniform winds directed towards the black hole and (b) winds streaming past the black hole. This study employs a non-relativistic 2D simulation code that incorporates the relativistically correct equation of state. A continuous parallel wind having different compositions, such as electron-proton flow or a charge-neutral mixture of electron, positron, and proton, was injected into the simulation domain through an inflow boundary. We found that no disc-like structures form within the accretion flow when uniform winds are directed toward the black hole. However, in the case of winds streaming past the black hole, the flow initially encircles the accretor, creating a disc-like structure. This disc later transforms into a shock cone due to the inflow pressure but reappears at a later time depending on the angular momentum distribution in different cases. These alternating phases of disc-like structure and shock cone significantly affect the bolometric luminosity of the system, causing variation by an order of magnitude. |
