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107 papers
How Pulsars Shine II: TeV emission
Andrei Gruzinov
Recent discovery of 20 TeV radiation from the Vela pulsar confirms (tentatively, at the level of crude estimates) the Aristotelian Electrodynamics picture of pulsar radiation: puls…
Simulating cosmic string loop captured by a rotating black hole
Heling Deng, Andrei Gruzinov, Yuri Levin +1
We study the dynamics of a cosmic string loop captured by a rotating black hole, ignoring string reconnections. A loop is numerically evolved in Kerr spacetime, with the result tha…
Shapes of non-Gaussianity in warm inflation
Mehrdad Mirbabayi, Andrei Gruzinov
Sphaleron heating has been recently proposed as a mechanism to realize warm inflation when inflaton is an axion coupled to pure Yang-Mills. As a result of heating, there is a frict…
Subsonic Wind Accretion
Andrei Gruzinov
The rate of subsonic wind accretion (accretion on a point Newtonian mass moving through uniform gas) is shown to be independent of the wind velocity and equal to the spherical Bond…
Fast Afterglows of Fast Radio Bursts
Andrei Gruzinov
The main FRB event may leave behind a clump of relativistic plasma with high ``free energy'' density. As the plasma undergoes collisionless relaxation, it emits coherent electromag…
Spinning black holes as cosmic string factories
Hengrui Xing, Yuri Levin, Andrei Gruzinov +1
We consider the evolution of a cosmic string loop that is captured by a much more massive and compact black hole. We show that after several reconnections that produce ejections of…