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Related papers: Single pulses from PSR B1641-45

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This paper reports on polarimetric radiation properties based on the switching modes of normal PSR B2020+28 by analysing the data acquired from the Nanshan 25-m radio telescope at 1556 MHz. With nearly 8 hours quasi-continuous observation,…

High Energy Astrophysical Phenomena · Physics 2016-07-20 Z. G. Wen , N. Wang , W. M. Yan , J. P. Yuan , Z. Y. Liu , M. Z. Chen , J. L. Chen

Recent observations of the polarisation of the optical pulses from the Crab pulsar motivated detailed comparative studies of the emission predicted by the polar cap, the outer gap and the two-pole caustics models. In this work, we study the…

Astrophysics · Physics 2008-11-26 J. Petri , J. Kirk

The long-standing assumption of symmetric radio emission beams from the two magnetic poles of pulsars is challenged by observational evidence of asymmetry and underfill. Direct testing of this symmetry remains difficult for most pulsars. As…

High Energy Astrophysical Phenomena · Physics 2026-05-01 Xiancong Wu , Hongguang Wang , Hao Tong , Rui Luo , Pengfei Wang , Chengbing Lyu , Hai Lei

The shapes of pulse profiles, especially their variations with respect to observing frequencies, are very important to understand emission mechanisms of pulsars, while no previous attempt has been made in interpreting the complicated…

Astrophysics · Physics 2009-11-07 G. J. Qiao , J. F. Liu , B. Zhang , J. L. Han

We present polarization profiles at 1.4 and 3.1 GHz for 14 young pulsars with characteristic ages less than 75 kyr. Careful calibration ensures that the absolute position angle of the linearly polarized radiation at the pulsar is obtained.…

Astrophysics · Physics 2009-11-11 Simon Johnston , Joel M. Weisberg

We establish that for PSR B0031-07 the orthogonal polarization modes switch at a single pulse level synchronously with the periodic drifting subpulses seen in total intensity. There are only four other pulsars known for which this…

High Energy Astrophysical Phenomena · Physics 2020-01-08 Cristina D. Ilie , Patrick Weltevrede , Simon Johnston , Tianyue Chen

The low frequency (110--180 MHz) capabilities of the Westerbork Synthesis Radio Telescope (WSRT) are used to characterise a large collection of single pulses from three low magnetic field pulsars. Using the Pulsar Machine II (PuMa-II) to…

Astrophysics of Galaxies · Physics 2015-05-20 Ramesh Karuppusamy , Ben Stappers , Maciej Serylak

We study the angular power spectra of the polarized component of the Galactic synchrotron emission in the 28-deg^2 Test Region of the Southern Galactic Plane Survey at 1.4 GHz. These data were obtained by the Australia Telescope Compact…

The Berezinskii-Kosterlitz-Thouless transition in 2D dipolar systems has been studied recently by path integral Monte Carlo (PIMC) simulations [A. Filinov et al., PRL 105, 070401 (2010)]. Here, we complement this analysis and study…

Quantum Gases · Physics 2012-11-02 Alexey Filinov , Michael Bonitz

The main idea and procedure are presented for a new synthetical method on constraining 3-D structure of emission regions of pulsars. With this method the emission regions can be synthetically constrained by fitting multi-wavelength…

Astrophysics · Physics 2007-05-23 H. G. Wang , H. Zhang , X. H. Cui , G. J. Qiao , K. J. Lee , Y. Liu , R. X. Xu

In this study, we report on a detailed single pulse polarimetric analysis of the radio emission from the pulsar J2321+6024 (B2319+60) observed with the Giant Metrewave Radio Telescope, over wide frequencies ranging between 300 to 500 MHz…

High Energy Astrophysical Phenomena · Physics 2022-08-15 Sk. Minhajur Rahaman , Rahul Basu , Dipanjan Mitra , George I. Melikidze

In this work, we point out that the Q/U Stokes parameters and E/B mode polarizations are the four components of a unique quaternion, which describes at the same time the directions and the parity states of spherical linear polarizations. We…

Cosmology and Nongalactic Astrophysics · Physics 2022-04-12 Hao Liu , James Creswell , Chao-Wei Tsai , Pavel Naselsky

In this paper, we investigate the emission properties of PSR J1727-2739, whose mean pulse profile has two main components, by analysing five single-pulse observations made using the Parkes 64-m radio telescope with a central frequency of…

High Energy Astrophysical Phenomena · Physics 2021-10-22 Rukiye Rejep , N. Wang , W. M. Yan , Z. G. Wen

We present the first polarization measurements of the radio emission from RRAT J1819$-$1458. Our observations, conducted in parallel to regular timing sessions, have yielded a small number of bright and polarized pulses. The polarization…

Solar and Stellar Astrophysics · Physics 2009-05-11 A. Karastergiou , A. W Hotan , W. van Straten , M. A McLaughlin , S. M Ord

We report on an analysis of the drifting subpulses of PSR B0320+39 that indicates a sudden step of ~180 degrees in subpulse phase near the centre of the pulse profile. The phase step, in combination with the attenuation of the periodic…

Astrophysics · Physics 2011-05-23 R. T. Edwards , B. W. Stappers , A. G. J. van Leeuwen

We analyze properties of excitations due to voltage pulses applied to a 1D noninteracting electron gas, assuming that the integral of the voltage over time is equal to the unit of flux. We show that the average charge transfer due to such…

Mesoscale and Nanoscale Physics · Physics 2011-10-05 Fabian Hassler , Bruno Küng , Gordey B. Lesovik , Gianni Blatter

We apply particle based kinetic simulations to explore the characteristics of a low-pressure gas discharge driven by high-voltage ( $\sim$ kV) pulses with alternating polarity, with a duty cycle of $\approx$ 1% and a repetition rate of 5…

We report on our analysis of a large sample of energy dependent pulse profiles of the X-ray binary pulsar Hercules X-1. We find that all data are compatible with the assumption of a slightly distorted magnetic dipole field as sole cause of…

Astrophysics · Physics 2009-10-31 S. Blum , U. Kraus

The availability of intense, ultrashort coherent radiation sources in the infrared region of the spectrum is enabling the generation of attosecond X-ray pulses via high harmonic generation, pump-probe experiments in the "molecular…

Pulsar dynamic spectra exhibit high visibility fringes arising from interference between scattered radio waves. These fringes may be random or highly ordered patterns, depending on the nature of the scattering or refraction. Here we…

Astrophysics · Physics 2009-11-10 Mark Walker , Dan Stinebring