Publications (22)
Streaming instability in neutron star magnetospheres: No indication of soliton-like waves
Jan BenáÄek, Patricio A. Muñoz, Jörg Büchner +1
Coherent radiation of pulsars, magnetars, and fast radio bursts could, in theory, be interpreted as radiation from solitons and soliton-like waves. The solitons are meant to contai…
Preserving your skies since 1988 -- Committee on Radio Astronomy Frequencies (CRAF) -- Periodic Review 2011-2021
Committee on Radio Astronomy Frequencies, Benjamin Winkel, Simon Garrington +43
The Committee on Radio Astronomy Frequencies (CRAF) is an Expert Committee of the European Science Foundation. It aims to provide a cost-effective single voice on frequency protect…
Compatibility Between Wind Turbines and the Radio Astronomy Service
Benjamin Winkel, Axel Jessner
Modern radio astronomical facilities are able to detect extremely weak electromagnetic signals not only from the universe but also from man-made radio frequency interference of var…
A multiwavlength study of PSR B0628-28: The first overluminous rotation-powered pulsar?
Werner Becker, Axel Jessner, Michael Kramer +2
The ROSAT source RX J0630.8-2834 was suggested by positional coincidence to be the X-ray counterpart of the old field pulsar PSR B0628-28. This association, however, was regarded t…
A Multi-wavelength study of the Pulsar PSR B1929+10 and its X-ray trail
Werner Becker, Michael Kramer, Axel Jessner +8
We report on the emission properties of PSR B1929+10 and its putative X-ray trail from a multi-wavelength study performed with XMM-Newton, the ESO NTT, the HST, the Effelsberg 100m…
On Beaming due to coherent inverse Compton scattering
Thomas Kunzl, Harald Lesch, Axel Jessner
We calculate the beaming of coherent emission by means of geometrical optics. When spherical elementary waves are phase-coupled in that way that constructive interference occurs al…
Linear acceleration emission of pulsar relativistic streaming instability and interacting plasma bunches
Jan BenáÄek, Patricio A. Muñoz, Jörg Büchner +1
Linear acceleration emission is one of the mechanisms that might explain intense coherent emissions of radio pulsars. This mechanism is not well understood, however, because the ef…
Poynting flux transport channels formed in polar cap regions of neutron star magnetospheres
Jan BenáÄek, Andrey Timokhin, Patricio A. Muñoz +4
Pair cascades in polar cap regions of neutron stars are considered to be an essential process in various models of coherent radio emissions of pulsars. The cascades produce pair pl…
The effect of HII regions on rotation measure of pulsars
Dipanjan Mitra, Richard Wielebinski, Michael Kramer +1
We have obtained new rotation measure for 11 pulsars observed with the Effelsberg 100-m radio telescope, in the direction of the Perseus arm. Using a combination of 34 published an…
A 2.1 Solar Mass Pulsar Measured by Relativistic Orbital Decay
David J. Nice, Eric M. Splaver, Ingrid H. Stairs +4
PSR J0751+1807 is a millisecond pulsar in a circular 6 hr binary system with a helium white dwarf secondary. Through high precision pulse timing measurements with the Arecibo and E…
Radio emission from a pulsar's magnetic pole revealed by general relativity
Gregory Desvignes, Michael Kramer, Kejia Lee +7
Binary pulsars are affected by general relativity (GR), causing the spin axes of each pulsar to precess. We present polarimetric radio observations of PSR J1906+0746 that demonstra…
A new limit on local Lorentz invariance violation of gravity from solitary pulsars
Lijing Shao, R. Nicolas Caballero, Michael Kramer +3
Gravitational preferred frame effects are generally predicted by alternative theories that exhibit an isotropic violation of local Lorentz invariance of gravity. They are described…
Origin of radio polarization in pulsar polar caps
Jan BenáÄek, Axel Jessner, Martin Pohl +2
It is crucial to know the polarization properties of coherent radio waves that escape from pulsar polar caps to calculate the radiative transfer through the magnetosphere and to pr…
Revealing the X-ray emission processes of old rotation-powered pulsars: XMM-Newton Observations of PSR B0950+08,PSR B0823+26 and PSR J2043+2740
Werner Becker, Martin C. Weisskopf, Allyn F. Tennant +4
We have completed part of a program to study the X-ray emission properties of old rotation-powered pulsars with XMM-Newton in order to probe and identify the origin of their X-radi…
Precision timing of PSR J1012+5307 and strong-field GR tests
Kosmas Lazaridis, Norbert Wex, Axel Jessner +10
We report on the high precision timing analysis of the pulsar-white dwarf binary PSR J1012+5307. Using 15 years of multi-telescope data from the European Pulsar Timing Array (EPTA)…
Revisiting profile instability of J1022+1001
Prajwal V. Padmanabh, Ewan D. Barr, David J. Champion +4
Millisecond pulsars in timing arrays can act as probes for gravitational wave detection and improving the solar system ephemerides among several other applications. However, the st…
The European Pulsar Timing Array: current efforts and a LEAP toward the future
Robert D. Ferdman, Rutger van Haasteren, Cees G. Bassa +22
The European Pulsar Timing Array (EPTA) is a multi-institutional, multi-telescope collaboration, with the goal of using high-precision pulsar timing to directly detect gravitationa…
Measuring Data Loss resulting from Radio Frequency Interference
Willem A. Baan, Axel Jessner, Jaap Steenge
This paper presents an observing methodology for calibrated measurements of radio interference levels and compare these with threshold interference limits that have been establishe…
Autonomous Spacecraft Navigation With Pulsars
Werner Becker, Mike G. Bernhardt, Axel Jessner
An external reference system suitable for deep space navigation can be defined by fast spinning and strongly magnetized neutron stars, called pulsars. Their beamed periodic signals…
On Pair Production in the Crab Pulsar
Thomas Kunzl, Harald Lesch, Axel Jessner +1
We consider the widespread assumption that coherent pulsar radio emission is based on extended pair production leading to plasma densities highly exceeding the Goldreich-Julian den…
Single pulse analysis of PSR B1133+16 at 8.35 GHz and carousel circulation time
Sneha Honnappa, Wojciech Lewandowski, Jaroslaw Kijak +4
A successful attempt was made to analyse about 6000 single pulses of PSR B1133+16 obtained with the 100-meter Effelsberg radio-telescope. The high resolution (60 micro-seconds) dat…
Giant Pulses with Nanosecond Time Resolution detected from the Crab Pulsar at 8.5 and 15.1 GHz
Axel Jessner, Mikhail V. Popov, Vladislav I. Kondratiev +6
We present a study of shape, spectra and polarization properties of giant pulses (GPs) from the Crab pulsar at the very high frequencies of 8.5 and 15.1 GHz. Studies at 15.1 GHz we…