B. Olivera,1 C. Salgado,2 J. L. Lado,3 A. Karimi,4 V. Henkel,4 E. Scheer,4 J. Fernández-Rossier,1,5 J. J. Palacios,6 and C. Untiedt1 1Departamento de Fı́sica Aplicada and Unidad Asociada del CSIC, Facultad de Ciencias, Universidad de Alicante, San Vicente del Raspeig E-03690, Spain 2Departamento de Fı́sica de la Materia Condensada, Universidad Autónoma de Madrid, Madrid E-28049, Spain 3Internatio...

Analysis of ten years of high-precision timing data on the millisecond pulsar PSR J0437−4715 has resulted in a model-independent kinematic distance based on an apparent orbital period derivative, Ṗb, determined at the 1.5% level of precision (Dk = 157.0±2.4 pc), making it one of the most accurate stellar distance estimates published to date. The discrepancy between this measurement and a previo...

X-ray emission from many rotation-powered millisecond pulsars (MSPs) is observed to be of predominantly thermal nature. In PSR J0437–4715, the nearest MSP known, an additional faint power-law tail is observed above 2.5 keV, commonly attributed to non-thermal magnetospheric radiation. We propose that the hard emission in this and other similar MSPs is instead due to weak Comptonization of the th...

PSR J0437-4715 is a millisecond pulsar (MSP) thought to be “pair formation starved” (having limited pair cascades due to magnetic photon absorption). Fortunately the general relativistic (GR) electrodynamical model under consideration applicable to this pulsar have few free parameters. We model PSR J0437-4715’s visibility [1], using a 3D model which incorporates the variation of the GR E-field ...

A new phase-coherent technique for the calibration of polarimetric data is presented. Similar to the one-dimensional form of convolution, data are multiplied by the response function in the frequency domain. Therefore, the system response may be corrected with arbitrarily high spectral resolution, effectively treating the problem of bandwidth depolarization. As well, the original temporal resol...

We propose a novel model for radio-wave scattering in the interstellar medium, on the basis of observations of PSR J0437-4715. We find that, although our estimates of the scintillation velocity and the distance to the scattering material agree with previous estimates, the decorrelation bandwidth and time scale of scintillation for this pulsar differ by an order of magnitude from those extrapola...

Analysis of ten years of high-precision timing data on the millisecond pulsar PSR J0437−4715 has resulted in a model-independent kinematic distance based on an apparent orbital period derivative, Ṗb, determined at the 1.5% level of precision (Dk = 157.0±2.4 pc), making it one of the most accurate stellar distance estimates published to date. The discrepancy between this measurement and a previo...

We present model spectra and lightcurves of thermal emission from hot spots on the surface of a compact star with an unmagnetized light-element atmosphere. An application to X-ray observations of the nearest known rotation-powered millisecond pulsar (MSP) PSR J0437–4715 reveals that the thermal emission from this pulsar is fully consistent with such a model, enabling constraints on important pr...