443 citations · 6.2k across the 89 of their papers we have counts for
31 papers · 1 filter
Magneto--thermal evolution of neutron stars
J. A. Pons, J. A. Miralles, U. Geppert
We study the mutual influence of thermal and magnetic evolution in a neutron star's crust in axial symmetry. Taking into account realistic microphysical inputs, we find the heat re…
Neutron star long term cooling - Joule heating in magnetized neutron stars
Deborah N. Aguilera, José A. Pons, Juan A. Miralles
We present two-dimensional simulations for the cooling of neutron stars with strong magnetic fields (B > 1e13 Gauss). We study how the cooling curves are influenced by magnetic fie…
Relativistic models of magnetars: structure and deformations
A. Colaiuda, V. Ferrari, L. Gualtieri +1
We find numerical solutions of the coupled system of Einstein-Maxwell's equations with a linear approach, in which the magnetic field acts as a perturbation of a spherical neutron…
The impact of magnetic field on the thermal evolution of neutron stars
Deborah N. Aguilera, José A. Pons, Juan A. Miralles
The impact of strong magnetic fields B>10e13 G on the thermal evolution of neutron stars is investigated, including crustal heating by magnetic field decay. For this purpose, we pe…
Joule heating in the cooling of magnetized neutron stars
Deborah N. Aguilera, Jose A. Pons, Juan A. Miralles
We present 2D simulations of the cooling of neutron stars with strong magnetic fields (B \geq 10^{13} G). We solve the diffusion equation in axial symmetry including the state of t…
2D Cooling of Magnetized Neutron Stars
Deborah N. Aguilera, José A. Pons, Juan A. Miralles
Context: Many thermally emitting isolated neutron stars have magnetic fields larger than 10^13 G. A realistic cooling model that includes the presence of high magnetic fields shoul…
Magnetic field dissipation in neutron star crusts: from magnetars to isolated neutron stars
J. A. Pons, U. Geppert
We study the non--linear evolution of magnetic fields in neutron star crusts with special attention to the influence of the Hall drift. Our goal is to understand the conditions for…
Evidence for Heating of Neutron Stars by Magnetic Field Decay
J. A. Pons, B. Link, J. A. Miralles +1
We show the existence of a strong trend between neutron star surface temperature and the dipolar component of the magnetic field extending through three orders of field magnitude,…
The exact solution of the Riemann problem in relativistic MHD with tangential magnetic fields
Roberto Romero, Jose M. Marti, Jose A. Pons +2
We have extended the procedure to find the exact solution of the Riemann problem in relativistic hydrodynamics to a particular case of relativistic magnetohydrodynamics in which th…
Numerical 3+1 general relativistic magnetohydrodynamics: a local characteristic approach
L. Anton, O. Zanotti, J. A. Miralles +4
We present a general procedure to solve numerically the general relativistic magnetohydrodynamics (GRMHD) equations within the framework of the 3+1 formalism. The work reported her…
Relativistic r-modes and Shear viscosity: regularizing the continuous spectrum
J. A. Pons, L. Gualtieri, J. A. Miralles +1
Within a fully relativistic framework, we derive and solve numerically the perturbation equations of relativistic stars, including the stresses produced by a non-vanishing shear vi…
Thermal radiation from magnetic neutron star surfaces
J. F. Perez--Azorin, J. A. Miralles, J. A. Pons
We investigate the thermal emission from magnetic neutron star surfaces in which the cohesive effects of the magnetic field have produced the condensation of the atmosphere and the…
Gravitational Waves from Rotating Proto-Neutron Stars
V. Ferrari, L. Gualtieri, J. A. Pons +1
We study the effects of rotation on the quasi normal modes (QNMs) of a newly born proto neutron star (PNS) at different evolutionary stages, until it becomes a cold neutron star (N…
Evolutionary sequences of rotating protoneutron stars
Loic Villain, Jose A. Pons, Pablo Cerda-Duran +1
We investigate the evolution of rigidly and differentially rotating protoneutron stars (PNSs) during the first twenty seconds of their life. We solve the equations describing stati…
Gravitational waves from newly born, hot neutron stars
Valeria Ferrari, Giovanni Miniutti, Jose' A. Pons
We study the gravitational radiation associated to the non--radial oscillations of newly born, hot neutron stars. The frequencies and damping times of the relevant quasi--normal mo…
Non-radial oscillation modes as a probe of density discontinuities in neutron stars
G. Miniutti, J. A. Pons, E. Berti +2
A phase transition occurring in the inner core of a neutron star could be associated to a density discontinuity that would affect the frequency spectrum of the non-radial oscillati…
Hydromagnetic instabilities in protoneutron stars
Juan A. Miralles, Jose A. Pons, V. Urpin
The stability properties of newly born neutron stars, or proto--neutron stars, are considered. We take into account dissipative processes, such as neutrino transport and viscosity,…
Towards a Mass and Radius Determination of the Nearby Isolated Neutron Star RX J185635-3754
Jose A. Pons, Frederick M. Walter, James M. Lattimer +3
We discuss efforts to determine the mass, radius, and surface composition of the nearby compact object RX J185635-3754 from its multi-wavelength spectral energy distribution. We co…
The likelihood of GODs' existence: Improving the SN1987a constraint on the size of large compact dimensions
Christoph Hanhart, Jose A. Pons, Daniel R. Phillips +1
The existence of compact dimensions which are accessible only to gravity represents an intriguing possible solution to the hierarchy problem. At present the strongest constraint on…
Evolution of Proto-Neutron Stars with Quarks
Jose A. Pons, Andrew W. Steiner, Madappa Prakash +1
Neutrino fluxes from proto-neutron stars with and without quarks are studied. Observable differences become apparent after 10--20 s of evolution. Sufficiently massive stars contain…
Evolution of a Neutron Star From its Birth to Old Age
M. Prakash, J. M. Lattimer, J. A. Pons +2
The main stages in the evolution of a neutron star, from its birth as a proto-neutron star, to its old age as a cold, catalyzed configuration, are described. A proto-neutron star i…
Evolution of Proto-Neutron stars with kaon condensates
Jose A. Pons, Juan A. Miralles, M. Prakash +1
We present simulations of the evolution of a proto-neutron star in which kaon-condensed matter might exist, including the effects of finite temperature and trapped neutrinos. The p…
Convective instability in proto-neutron stars
Juan A. Miralles, Jose A. Pons, V. Urpin
The linear hydrodynamic stability of proto-neutron stars (PNSs) is considered taking into account dissipative processes such as neutrino transport and viscosity. We obtain the gene…
Hyperbolic character of the angular moment equations of radiative transfer and numerical methods
Jose A. Pons, J. Ma. Ibanez, Juan A. Miralles
We study the mathematical character of the angular moment equations of radiative transfer in spherical symmetry and conclude that the system is hyperbolic for general forms of the…