Constraints on the black-hole charges of M87* and Sagittarius A* by changing rates of photon spheres can be relaxed
N Tsukamoto, R Kase - Physical Review D, 2024 - APS
The Event Horizon Telescope (EHT) Collaboration observed ring images called the
shadows of M87* and Sagittarius A*(Sgr A*), which are supermassive objects in M87 and …
shadows of M87* and Sagittarius A*(Sgr A*), which are supermassive objects in M87 and …
Continuum emission from within the plunging region of black hole discs
The thermal continuum emission observed from accreting black holes across X-ray bands
has the potential to be leveraged as a powerful probe of the mass and spin of the central …
has the potential to be leveraged as a powerful probe of the mass and spin of the central …
Plunging region emission in the X-ray binary MAXI J0637− 430
A Mummery, J Jiang, A Fabian - Monthly Notices of the Royal …, 2024 - academic.oup.com
On 2019 November 2, the black hole X-ray binary MAXI J0637− 430 went into outburst, at
the start of which it was observed in a thermal 'disc-dominated'state. High photon energy …
the start of which it was observed in a thermal 'disc-dominated'state. High photon energy …
The three-dimensional structure of black hole accretion flows within the plunging region
A Mummery, JM Stone - Monthly Notices of the Royal …, 2024 - academic.oup.com
We analyse, using new analytical models and numerical general relativistic
magnetohydrodynamic simulations, the three-dimensional properties of accretion flows …
magnetohydrodynamic simulations, the three-dimensional properties of accretion flows …
Cost of excursions until first crossing of the origin for random walk and Lévy flights: An exact general formula
We consider a discrete-time random walk on a line starting at x 0≥ 0 where a cost is
incurred at each jump. We obtain an exact analytical formula for the distribution of the total …
incurred at each jump. We obtain an exact analytical formula for the distribution of the total …
The stress at the ISCO of black-hole accretion discs is not a free parameter
Radiation from the" plunging region"(the space between the innermost stable circular orbit
(ISCO) and the black-hole (BH) surface) of an accretion flow onto a BH is supposed to add a …
(ISCO) and the black-hole (BH) surface) of an accretion flow onto a BH is supposed to add a …
Cost of excursions until first return for random walks and L\'evy flights: an exact general formula
We consider a discrete-time random walk where a cost is incurred at each jump. We obtain
an exact analytical formula for the distribution of the total cost of a trajectory until the process …
an exact analytical formula for the distribution of the total cost of a trajectory until the process …