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22 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…
Discovery of slow X-ray pulsations in the high-mass X-ray binary 4U 2206+54
P. Reig, J. M Torrejon, I. Negueruela +3
The source 4U 2206+54 is one of the most enigmatic high-mass X-ray binaries. In spite of intensive searches, X-ray pulsations have not been detected in the time range 0.001-1000 s.…
On the Solution Space of Differentially Rotating Neutron Stars in General Relativity
Marcus Ansorg, Dorota Gondek-Rosińska, Loïc Villain
A highly accurate, multi-domain spectral code is used in order to construct sequences of general relativistic, differentially rotating neutron stars in axisymmetry and stationarity…
Giant magnetoresistance in ultra-small Graphene based devices
F. Muñoz-Rojas, J. Fernandez-Rossier, J. J. Palacios
By computing spin-polarized electronic transport across a finite zigzag graphene ribbon bridging two metallic graphene electrodes, we demonstrate, as a proof of principle, that dev…
Spectral evolution of superluminal components in parsec-scale jets
P. Mimica, M. A. Aloy, I. Agudo +3
(Abridged) We present numerical simulations of the spectral evolution and emission of radio components in relativistic jets. We have developed an algorithm (SPEV) for the transport…
High variability in Vela X-1: giant flares and off states
Ingo Kreykenbohm, Joern Wilms, Peter Kretschmar +6
We investigate the spectral and temporal behavior of the high mass X-ray binary Vela X-1 during a phase of high activity, with special focus on the observed giant flares and off st…