Results 31 to 40 of about 97,661 (176)
Bondi Accretion onto a Luminous Object
, 2008 Spherical accretion of ionized gas onto a gravitating object is examined under the influence of central radiation. In classical Bondi accretion onto a non-luminous source with mass M, the accretion rate M_B is expressed as M_B = lambda(gamma) x 4piG^2M^2
FUKUE, Jun
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Fluid accretion onto a spherical black hole: Relativistic description versus the Bondi model [PDF]
, 1999 We describe general relativistically a spherically symmetric stationary fluid accretion onto a black hole. Relativistic effects enhance mass accretion, in comparison to the Bondi model predictions, in the case when back reaction is neglected.
Malec, Edward
core +1 more source
Migratory divides highlight intraspecific flexibility in the stopover tactic of black kites
Journal of Avian Biology, Volume 2026, Issue 5, September 2026.In migrating raptors, route choice can be influenced by multiple factors, including geography, weather conditions, energy constraints, and social interactions. The selected route may in turn be associated with different patterns of stopover habitat use, yet the relationship between the two remains poorly understood.
Ugo Mellone +5 more
wiley +1 more source
Blind Spots in Traditional Approaches to Conservation Prioritization in a Climate Change Context
Diversity and Distributions, Volume 32, Issue 9, September 2026.ABSTRACT Aim Climate change affects biodiversity faster than conservation assessments can be conducted. This issue calls for approaches that support decisions on conservation prioritization, such as species phylogenetic relationships and diversity and endemism metrics. However, these traditional approaches often neglect some important aspects, limiting
Luiz Bondi +4 more
wiley +1 more source
Generalized Bondi Accretion Flow with and without Outflow
The Astrophysical JournalThe properties of accretion flows are affected by the angular momentum of the accreting gas. M.-G. Park found that the mass accretion rate, specifically, decreases significantly as the gas angular momentum increases. However, R. Narayan & A. C.
Dongho Han, Myeong-Gu Park
doaj +1 more source
The Astrophysical Journal Letters, 2023 In this letter, we investigate Bondi-like accretion flows with zero or low specific angular momentum by performing 3D general relativistic magnetohydrodynamic simulations.
Tom M. Kwan +2 more
doaj +1 more source
Prospective study on physical activity and Alzheimer's disease–related biomarkers
Alzheimer's &Dementia, Volume 22, Issue 8, August 2026.Abstract INTRODUCTION Evidence regarding the association between physical activity (PA) and Alzheimer's disease (AD)–related biomarkers is scarce and inconsistent. METHODS At ages 56 and 67, 564 men from the Vietnam Era Twin Study of Aging reported their PA during the preceding week from which metabolic equivalent of energy expenditure (MET) hours were
Paula Iso‐Markku +11 more
wiley +1 more source
ACCRETION ONTO A MAGNETIC DIPOLE: RESULTS OF 2D NUMERICAL SIMULATIONS
Odessa Astronomical Publications, 2017 Different regimes of accretion to a star with a dipole magnetic field were investigated using 2D numerical axisymmetric resistive MHD simulations. Numerical technique was improved over our recently published results (Toropin et al., 1999, referred as T99
Yu. M. Toropin, O. D. Toropina
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Galaxies, 2021 We investigate the non-isothermal Bondi accretion onto a supermassive black hole (SMBH) for the unexplored case when the adiabatic index is varied in the interval ...
Jose M. Ramírez-Velásquez +4 more
doaj +1 more source
, 2017 One of the most active fields of research of modern-day astrophysics is that of massive black hole formation and coevolution with the host galaxy.
L. Ciotti +3 more
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