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Four pulsars, PSRs J1838+1523, J1901+0510, J1909+0007 and J1929+1844, are found to exhibit bright and weak emission states from sensitive FAST observations. New FAST observations have measured their polarization properties for the two…

High Energy Astrophysical Phenomena · Physics 2023-06-28 Yi Yan , P. F. Wang , J. L. Han

The spin density matrix for spin-3/2 hole systems can be decomposed into a sequence of multipoles which has important higher-order contributions beyond the ones known for electron systems [R. Winkler, Phys. Rev. B \textbf{70}, 125301…

Other Condensed Matter · Physics 2009-11-11 Dimitrie Culcer , C. Lechner , R. Winkler

Orbital parameters of binary radio pulsars reveal the history of the pulsars' formation and evolution including dynamic interactions with other objects. Advanced technology has enabled us to determine these orbital parameters accurately in…

Solar and Stellar Astrophysics · Physics 2015-03-14 Manjari Bagchi

Some characteristics of the inverse Compton scattering (ICS) model are reviewed. At least the following properties of radio pulsars can be reproduced in the model: core or central emission beam, one or two hollow emission cones, different…

Astrophysics · Physics 2016-01-27 G. J. Qiao , R. X. Xu , J. F. Liu , J. L. Han , B. Zhang

Accurately measuring the magnetic field in the ISM is essential for understanding star-formation processes. We searched archival data of the Submillimeter Array (SMA) for evidence of circular polarization in common molecular tracers, most…

Instrumentation and Methods for Astrophysics · Physics 2018-08-21 Mohammed Chamma , Martin Houde , Josep Miquel Girart , Ramprasad Rao

Trains of ultrashort laser pulses separated by the time of rotational revival (typically, tens of picoseconds) have been exploited for creating ensembles of aligned molecules. In this work we introduce a chiral pulse train - a sequence of…

Quantum Physics · Physics 2013-05-29 S. Zhdanovich , A. A. Milner , C. Bloomquist , J. Floß , I. Sh. Averbukh , J. W. Hepburn , V. Milner

A new search of globular clusters for millisecond pulsars is in progress at Parkes. In this paper we describe the motivation, the new hardware and software systems adopted, the survey plan and the preliminary results. So far, we have…

Astrophysics · Physics 2009-11-06 N. D'Amico , A. Possenti , R. N. Manchester , J. Sarkissian , A. G. Lyne , F. Camilo

Recent measurements of the four pulsar timing arrays were interpreted as a signal of the low frequency stochastic gravitational wave background. We show that the amplitude and angular correlations of pulsar timing residuals can be…

General Physics · Physics 2025-10-23 Davor Palle

We investigate the changes in polarization position angle in radiation from pulsar A around the eclipse in the Double Pulsar system PSR J0737-3039A/B at the 20 cm and 50 cm wavelengths using the Parkes 64-m telescope. The changes are…

Solar and Stellar Astrophysics · Physics 2015-06-05 R. Yuen , R. N. Manchester , M. Burgay , F. Camilo , M. Kramer , D. B. Melrose , I. H. Stairs

It has long been known that rotation can have an appreciable impact on stellar pulsation --- by modifying the usual p and g modes found in the non-rotating case, and by introducing new classes of mode. However, it's only relatively recently…

Solar and Stellar Astrophysics · Physics 2015-06-17 Rich Townsend

The diverse polarization properties in pulsars are in conflict with applying a unique emission mechanism to the population. The polarization position angle (PPA) traverse in most pulsars shows a S-shaped curve that can be interpreted using…

High Energy Astrophysical Phenomena · Physics 2023-03-01 Dipanjan Mitra , George I. Melikidze , Rahul Basu

It is now known that the emission from radio pulsars can vary over a wide range of timescales, from fractions of seconds to decades. However, it is not yet known if long- and short-term emission variability are caused by the same physical…

High Energy Astrophysical Phenomena · Physics 2019-08-28 Paul Brook , Aris Karastergiou , Simon Johnston

We calculate circularly polarized luminescence emitted parallel (vertical emission) and perpendicular (edge emission) to the growth direction from a quantum well in a spin light-emitting diode (spin-LED) when either the holes or electrons…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Z. G. Yu , W. H. Lau , M. E. Flatte'

Mesoscopic correlations are observed in the polarization of microwave radiation transmitted through a random waveguide. These measurements, supported by diagrammatic theory, permit the unambiguous identification of short, long, and infinite…

Disordered Systems and Neural Networks · Physics 2009-11-10 A. A. Chabanov , N. P. Tregoures , B. A. van Tiggelen , A. Z. Genack

We present the first results from a programme of multi-frequency simultaneous single pulse observations carried out as part of the European Pulsar Network. We detail the main data analysis methods and apply them to simultaneous observations…

About two years ago, Wolszczan and Frail announced the detection of a possible planetary system consisting of two Earth-mass planets around a millisecond pulsar. It was pointed out shortly thereafter that the mutual gravitational…

Astrophysics · Physics 2007-05-23 Renu Malhotra

In this work we present a revised measurement of the phase-averaged optical polarisation of the Vela pulsar (PSR B0833-45), for which only one value has been published so far (Wagner & Seifert 2000). Our measurement has been obtained…

Astrophysics · Physics 2009-11-13 R. P. Mignani , S. Bagnulo , J. Dyks , G. Lo Curto , A. Slowikowska

Measurements of average pulse profiles made with a single linear polarization over the range 41-112 MHz are presented for PSR B0950+08. We show that the observed variable structure of the pulse profiles is a result of Faraday sinusoidal…

Astrophysics · Physics 2009-11-10 T. V. Shabanova , Yu. P. Shitov

We report two phenomena detected in PSR J0344$-$0901 from two observations conducted at frequency centered at 1.25 GHz using the Five-hundred-meter Aperture Spherical radio Telescope (FAST). The first phenomenon manifests as shifting in the…

High Energy Astrophysical Phenomena · Physics 2024-02-26 H. M. Tedila , R. Yuen , N. Wang , D. Li , Z. G. Wen , W. M. Yan , J. P. Yuan , X. H. Han , P. Wang , W. W. Zhu , S. J. Dang , S. Q. Wang , J. T. Xie , Q. D. Wu , Sh. Khasanov , FAST Collaboration

Terrestrial timescales show instabilities due to the physical limitations of the atomic clocks. Stricter environmental isolation and increased numbers of improved cesium clocks and cavity-tuned hydrogen masers have resulted in time scales…

Astrophysics · Physics 2007-05-23 Demetrios N. Matsakis , Roger S. Foster
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