17 citations · 35 across the 6 of their papers we have counts for
7 papers
Numerical modelling of recombination-driven stellar winds
Bestin James, Jiří Krtička
Low-temperature stars have a significant population of neutral hydrogen increasing with height in their atmospheres. This suggests eventual recombination as we move away from their…
Black hole outflows initiated by a large-scale magnetic field
Bestin James, Agnieszka Janiuk, Vladimir Karas
Accreting black hole sources show variable outflows at different mass scales. For instance, in the case of galactic nuclei, our own galactic center Sgr A* exhibits flares and outbu…
Can MAD accretion disks launching structured jets explain both GRB and AGN engines? Magnetically arrested accretion disks launching structured jets in application to GRB and AGN engines
A. Janiuk, B. James
We explore the formation, energetics, and geometry of relativistic jets along with the variability of their central engine. We study both fast and slowly rotating black holes and a…
Modeling the GRB jet properties with 3D general relativistic simulations of magnetically arrested accretion flows
Bestin James, Agnieszka Janiuk, Fatemeh Hossein Nouri
We investigate the dependence of the GRB jet structure and its evolution on the properties of the accreting torus in the central engine. Our models numerically evolve the accretion…
Variability of magnetically-dominated jets from accreting black holes
Agnieszka Janiuk, Bestin James, Ishika Palit
Structured jets are recently invoked to explain the complex emission of gamma ray bursts, such as GW 170817. Based on the accretion simulations, the jets are expected to have a str…
Cosmic Gamma Ray Bursts
A. Janiuk, B. James, K. Sapountzis
Gamma ray bursts (GRBs) are astronomical phenomena detected at highest energies. The gamma ray photons carry energies on the order of mega-electronovolts and arrive to us from the…