40 citations · 113 across the 8 of their papers we have counts for
8 papers
Unbound geodesics from the ergosphere and the M87 jet profile
J. Gariel, G. Marcilhacy, N. O. Santos
Assuming that the spin of the black hole, presumably located at the core of the active galactic nuclei Messier 87 (M87), takes the value which maximises the ergospheric volume…
Gravitational Model of High Energy Particles in a Collimated Jet
J. A. de Freitas Pacheco, J. Gariel, G. Marcilhacy +1
Observations suggest that relativistic particles play a fundamental role in the dynamics of jets emerging from active galactic nuclei as well as in their interaction with the intra…
Model of collimated jets with high energy particles
C. Barbachoux, J. Gariel, G. Marcilhacy +1
The increasing data set of precise observations of very energetic and collimated jets, with black hole (BH) as putative central engine, at different astrophysical scales and in var…
Kerr Geodesics, the Penrose Process and Jet Collimation by a Black Hole
J. Gariel, M. A. H. MacCallum, G. Marcilhacy +1
We re-examine the possibility that astrophysical jet collimation may arise from the geometry of rotating black holes and the presence of high-energy particles resulting from a Penr…
Static cylindrical symmetry and conformal flatness
L. Herrera, G. Le Denmat, G. Marcilhacy +1
We present the whole set of equations with regularity and matching conditions required for the description of physically meaningful static cylindrically symmmetric distributions of…
On the pre-nucleosynthesis cosmological period
R. Aldrovandi, J. Gariel, G. Marcilhacy
Physics, as known from our local, around--earth experience, meets some of its applicability limits at the time just preceding the period of primeval nucleosynthesis. Attention is f…