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6 papers · 2 filters
Instabilities in the Gamma Ray Burst central engine. What makes the jet variable?
Agnieszka Janiuk, Ye-Fei Yuan, Rosalba Perna +1
Both types of long and short gamma ray bursts involve a stage of a hyper-Eddington accretion of hot and dense plasma torus onto a newly born black hole. The prompt gamma ray emissi…
Relativistic slim disks with vertical structure
Aleksander Sadowski, Marek Abramowicz, Michal Bursa +3
We report on a scheme for incorporating vertical radiative energy transport into a fully relativistic, Kerr-metric model of optically thick, advective, transonic alpha disks. Our c…
Leaving the ISCO: the inner edge of a black-hole accretion disk at various luminosities
Marek A. Abramowicz, Michal Jaroszynski, Shoji Kato +3
The "radiation inner edge" of an accretion disk is defined as the inner boundary of the region from which most of the luminosity emerges. Similarly, the "reflection edge" is the sm…
Measurement of the energy spectrum of cosmic rays above 10^18 eV using the Pierre Auger Observatory
The Pierre Auger Collaboration
We report a measurement of the flux of cosmic rays with unprecedented precision and statistics using the Pierre Auger Observatory. Based on fluorescence observations in coincidence…
Measurement of the Depth of Maximum of Extensive Air Showers above 10^18 eV
The Pierre Auger Collaboration
We describe the measurement of the depth of maximum, Xmax, of the longitudinal development of air showers induced by cosmic rays. Almost four thousand events above 10^18 eV observe…
Launching of jets by cold, magnetized disks in Kerr Metric
Aleksander Sadowski, Marek Sikora
We confirm recent discovery by Cao that in the vicinity of fast rotating black holes jets can be launched centrifugally by cold, magnetized disks even for nearly vertically shaped…