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13 papers · 2 filters
Unifying the Zoo of Jet-Driven Stellar Explosions
Davide Lazzati, Brian J. Morsony, Christopher H. Blackwell +1
We present a set of numerical simulations of stellar explosions induced by relativistic jets emanating from a central engine sitting at the center of compact, dying stars. We explo…
Dissipation Efficiency of Reconfinement Shocks in Relativistic Jets
Krzysztof Nalewajko
We calculate the dissipation efficiency of relativistic reconfinement shocks. Building on previous work (Nalewajko & Sikora 2009), we consider different distributions of the extern…
Radiatively Inefficient Accretion: Breezes, Winds and Hyperaccretion
Mitchell C. Begelman
We reformulate the adiabatic inflow-outflow (ADIOS) model for radiatively inefficient accretion flows, treating the inflow and outflow zones on an equal footing. For purely adiabat…
Extreme particle acceleration in magnetic reconnection layers. Application to the gamma-ray flares in the Crab Nebula
Benoit Cerutti, Dmitri A. Uzdensky, Mitchell C. Begelman
The gamma-ray space telescopes AGILE and Fermi detected short and bright synchrotron gamma-ray flares at photon energies above 100 MeV in the Crab Nebula. This discovery suggests t…
Magnetars vs. high magnetic field pulsars: a theoretical interpretation of the apparent dichotomy
Jose A. Pons, Rosalba Perna
Highly magnetized neutron stars (NSs) are characterized by a bewildering range of astrophysical manifestations. Here, building on our simulations of the evolution of magnetic stres…
Emission geometry, radiation pattern, and magnetic topology of the magnetar XTE J1810-197 in its quiescent state
Federico Bernardini, Rosalba Perna, Eric Gotthelf +3
The return to the quiescent state of the Anomalous X-ray pulsar XTE J1810-197 following its 2003 outburst represents a unique opportunity to probe the surface emission properties o…