Lazaridis, K., Wex, N., Jessner, A., Kramer, M., Stappers, B. W., Janssen, G. H., ...
We present results from the high precision timing analysis of the pulsar-white dwarf (WD) binary PSR J1012+5307 using 15 years of multi-telescope data. Observations were performed regularly by the...
A new technique for timing the double pulsar system (2009)
Freire, P. C. C., Wex, N., Kramer, M., Lorimer, D. R., McLaughlin, M. A., Stairs, I. H., ...
In 2004, McLaughlin et al. discovered a phenomenon in the radio emission of PSR J0737-3039B (B) that resembles drifting sub-pulses. The repeat rate of the sub-pulses is equal to the spin frequency of...
M. Kramer, N. Wex, R. Wielebinski, Alexander Potekhin, Gilles Chabrier, Yuri Shibanov
. We study equilibrium properties of partially ionized hydrogen atmospheres and subphotospheric layers of weakly (with magnetic eld B 10 9 G) and strongly (B 10 10 G) magnetized neutron stars. In...
V. D. Pal'shin, A. I. Tsygan (2007)
Ioffe Physical Technical, M. Kramer, N. Wex, R. Wielebinski, V. D. Pal'shin, A. I. Tsygan
. It is shown that X-ray binaries can be accelerated by their own radiation. It is possible if the magnetic field of a neutron star in a binary differs from the dipolar field. Asymmetric X-ray...
Emission of Particles and Photons in the Pulsar Polar Cap (2007)
Tsygan St Peterburg, M. Kramer, N. Wex, R. Wielebinski, A. I. Tsygan
. We study emission of particles and photons from the pulsar polar cap. The Goldreich-Julian model for the regime of free emission of charged particles from the neutron star surface is used. In this...
In this paper we develop a consistent, phenomenological methodology to measure preferred-frame effects (PFEs) in binary pulsars that exhibit a high rate of periastron advance. We show that in these...
Precision Timing Measurements of PSR J1012+5307 (2001)
Lange, Ch., Camilo, F., Wex, N., Kramer, M., Backer, D. C., Lyne, A. G., ...
We present results and applications of high precision timing measurements of the millisecond pulsar J1012+5307. Combining our radio observations with results based on optical observations, we derive...
The 1997 periastron passage of the binary pulsar PSR B1259-63 (2000)
Johnston, Simon, Wex, N., Nicastro, L., Manchester, R. N., Lyne, A. G.
We report here on multifrequency radio observations of the pulsed emission from PSR B1259-63 around the time of the closest approach to its B2e companion star. There was a general increase in the...
Small-eccentricity binary pulsars and relativistic gravity (2000)
Small-eccentricity binary pulsars with white dwarf companions provide excellent test laboratories for various effects predicted by alternative theories of gravity, in particular tests for the...
Geodetic Precession and the Binary Pulsar B1913+16 (2000)
Karastergiou, A., Kramer, M., Wex, N., Von Hoensbroech, A.
A change of the component separation in the profiles of the binary pulsar PSR B1913+16 has been observed for the first time (Kramer 1998) as expected by geodetic precession. In this work we extend...
Heat and Charge Transport in Envelopes of Weakly and Strongly Magnetized Neutron Stars (2000)
M. Kramer, N. Wex, R. Wielebinski, Alexander Potekhin
. Thermal and electrical electron conductivities are calculated for a broad range of physical parameters typical for envelopes of neutron stars. An appropriate eective electron-ion scattering...
A 1400-MHz pilot search for young pulsars (1999)
Lorimer, D. R., Kramer, M., Mueller, P., Wex, N., Jessner, A., Lange, C., ...
We have used the Effelsberg 100-m radio telescope to conduct a 1400-MHz ($\lambda$ 21-cm) search for young and rapidly rotating radio pulsars along a 2 deg$^2$ strip of the northern Galactic plane...
Constraints on Supernova Kicks from the Double Neutron Star System PSR B1913+16 (1999)
Wex, N., Kalogera, V., Kramer, M.
We use recent information on geodetic precession of the binary pulsar B1913+16 along with measurements of its orbital parameters and proper motion to derive new constraints on the immediate...
Frame dragging in black hole-pulsar binaries (1999)
The discovery of frame-dragging effects in binary pulsar timing experiments requires a compact companion with sufficiently large spin. A pulsar orbiting a fast rotating black hole could provide an...
Binary Eclipsing Millisecond Pulsars: A Decade of Timing (1999)
M. Kramer, N. Wex, R. Wielebinski, David J. Nice, Zaven Arzoumanian, Stephen E. Thorsett
. We present results of long-term timing of eclipsing binaries PSR B1744 24A and PSR B1957+20 at Arecibo, the VLA, and Green Bank. Both pulsars exhibit irregularities in pulsar rotation and orbital...
Frame dragging and other precessional effects in black hole-pulsar binaries (1998)
For radio pulsars in orbit with a compact companion, pulsar timing observations have proved to be a powerful tool for identifying the physical nature of the companion. Unfortunately, perhaps the most...
Timing models for the long-orbital period binary pulsar PSR B1259-63 (1998)
Wex, N., Johnston, S., Manchester, R. N., Lyne, A. G., Stappers, B. W., Bailes, M.
The pulsar PSR B1259-63 is in a highly eccentric 3.4-yr orbit with the Be star SS 2883. Timing observations of this pulsar, made over a 7-yr period using the Parkes 64-m radio telescope, cover two...
A timing formula for main-sequence star binary pulsars (1997)
In binary radio pulsars with a main-sequence star companion, the spin-induced quadrupole moment of the companion gives rise to a precession of the binary orbit. As a first approximation one can model...
Microlensing of pulsar radiation in the Galactic Center (1995)
We investigate the possibility of identifying massive objects (lenses) in the Galactic Center region (GC) by means of pulsar timing. The well known intensity change due to microlensing is found to be...