104 citations · 200 across the 4 of their papers we have counts for
4 papers
On the duration of long GRBs: effects of black hole spin
Agnieszka Janiuk, Rafal Moderski, Daniel Proga
In the frame of the collapsar model for long gamma ray bursts (GRBs), we investigate the formation of a torus around a spinning BH and we check what rotational properties a progeni…
The nature of the intranight variability of radio-quiet quasars
B. Czerny, A. Siemiginowska, A. Janiuk +1
We select a sample of 10 radio-quiet quasars with confirmed intranight optical variability and with available X-ray data. We compare the variability properties and the broad band s…
Low angular momentum accretion in the collapsar: how long can a long GRB be?
Agnieszka Janiuk, Daniel Proga
The collapsar model is the most promising scenario to explain the huge release of energy associated with long duration gamma-ray-bursts (GRBs). Within this scenario GRBs are believ…
Instabilities in the time-dependent neutrino disc in Gamma-Ray Bursts
Agnieszka Janiuk, Ye-Fei Yuan, Rosalba Perna +1
We investigate the properties and evolution of accretion tori formed after the coalescence of two compact objects. At these extreme densities and temperatures, the accreting torus…