5 citations · 10 across the 3 of their papers we have counts for
3 papers
astro-ph.HE2018★ 5 cited
Central accumulation of magnetic flux in massive Seyfert galaxies as a possible engine to trigger ultrahigh energy cosmic rays
R. C. Anjos, C. H. Coimbra-Araujo
In the present paper we investigate the production of ultrahigh energy cosmic rays (UHECRs) from Seyferts. We discuss the UHECR luminosities obtained by two possible engine trigger…
gr-qc2016★ 2 cited
Stability of perturbed geodesics in axisymmetric spacetimes
C. H. Coimbra-Araujo, R. C. Anjos
The effect of self-gravity of a disk matter is evaluated by the simplest modes of oscillation frequencies for perturbed circular geodesics. It is plotted the radial profiles of fre…
astro-ph.HE2015★ 3 cited
Luminosity of ultrahigh energy cosmic rays and bounds on magnetic luminosity of radio-loud active galactic nuclei
C. H. Coimbra-Araújo, R. C. Anjos
We investigate the production of magnetic flux from rotating black holes in active galactic nuclei (AGNs) and compare it with the upper limit of ultrahigh energy cosmic ray (UHECR)…