98 citations · 1.2k across the 93 of their papers we have counts for
5 papers · 1 filter
A differential-geometry approach to black hole characterization of megamaser systems in static spherically symmetric spacetimes
Santiago González-Salud, Rodrigo Bárcena-Ramos, Alfredo Herrera-Aguilar +1
We develop a geometry-first model that maps measured thin-disk water megamaser observables--sky angles, frequency shifts, their secular drifts and the angular redshift rate--to the…
Reviewing the GR Method for Estimating Black Hole Parameters of Megamaser Systems
Adriana González-Juárez, Alfredo Herrera-Aguilar
We review a General Relativistic (GR) method to determine the black hole (BH) parameters: mass-to-distance ratio, position and recessional velocity of active galactic nuclei (AGNs)…
Estimating the mass-to-distance ratio for a set of megamaser AGN black holes by employing a general relativistic method
A. González-Juárez, M. Momennia, A. Villalobos-Ramírez +1
Context. Motivated by the recent achievements of a full general relativistic method in determining black hole (BH) parameters, we continue to estimate the mass-to-distance ratio of…
A general relativistic estimation of the black hole mass-to-distance ratio at the core of TXS 2226-184
Artemisa Villalobos-Ramirez, Oswaldo Gallardo-Rivera, Alfredo Herrera-Aguilar +1
In this work we make use of a general relativistic method to estimate the mass-to-distance ratio M/D = 3.54^{+0.2}_{-0.2} X 10^4 M_{sun}/Mpc of the black hole hosted at the core of…
On the galactic rotation curves problem within an axisymmetric approach
Cesar Alvarez, Olindo Corradini, Alfredo Herrera-Aguilar +2
In U. Nucamendi et al. Phys. Rev. D63 (2001) 125016 and K. Lake, Phys. Rev. Lett. 92 (2004) 051101 it has been shown that galactic potentials can be kinematically linked to the obs…