Bibliographic Details
| Title: |
Geometric Correction for Wind Accretion in Binary Systems |
| Authors: |
Emilio Tejeda, Jesús A. Toalá |
| Source: |
The Astrophysical Journal, Vol 980, Iss 2, p 226 (2025) |
| Publisher Information: |
IOP Publishing, 2025. |
| Publication Year: |
2025 |
| Collection: |
LCC:Astrophysics |
| Subject Terms: |
Binary stars, Stellar accretion, Stellar winds, High mass x-ray binary stars, Symbiotic binary stars, Astrophysics, QB460-466 |
| More Details: |
The Bondi–Hoyle–Lyttleton (BHL) accretion model is widely used to describe how a compact object accretes material from a companion's stellar wind in binary systems. However, its standard implementation becomes inaccurate when the wind velocity ( v _w ) is comparable to or less than the orbital velocity ( v _o ), predicting nonphysical accretion efficiencies above unity. This limits its applicability to systems with low wind-to-orbital velocity ratios ( w = v _w / v _o ≤ 1), such as symbiotic systems. We revisit the implementation of the BHL model and introduce a geometric correction factor that accounts for the varying orientation of the accretion cylinder relative to the wind direction. This correction ensures physically plausible accretion efficiencies ( η ≤ 1) for all w in circular orbits. Our new implementation naturally predicts the flattening of the accretion efficiency observed in numerical simulations for w |
| Document Type: |
article |
| File Description: |
electronic resource |
| Language: |
English |
| ISSN: |
1538-4357 |
| Relation: |
https://doaj.org/toc/1538-4357 |
| DOI: |
10.3847/1538-4357/ada953 |
| Access URL: |
https://doaj.org/article/439494f05a144f76bbf252cc1f04e48c |
| Accession Number: |
edsdoj.439494f05a144f76bbf252cc1f04e48c |
| Database: |
Directory of Open Access Journals |
