Radio emission by particles due to pulsar spin

Free access article

Issue		A&A Volume 437, Number 2, July II 2005


Page(s)		537 - 543
Section		Stellar structure and evolution
DOI		http://dx.doi.org/10.1051/0004-6361:20041319

A&A 437, 537-543 (2005)
DOI: 10.1051/0004-6361:20041319

Radio emission by particles due to pulsar spin

R. M. C. Thomas and R. T. Gangadhara

Indian Institute of Astrophysics, Bangalore - 560034, India
e-mail: [mathew;ganga]@iiap.res.in

(Received 19 May 2004 / Accepted 15 February 2005)

Abstract
We present a relativistic model for the motion of charged particles in rotating magnetic field lines projected onto a plane perpendicular to the rotation axis. By making an approximation that the projected field lines are straight, an analytical expression is obtained for the particle trajectory. The motive behind developing this model is to elucidate some of the effects of rotation in pulsar profiles. There is significant contribution to the curvature of a particle trajectory due to the rotation of the pulsar, which is in addition to the inherent curvature of the field lines. The asymmetry in the observed pulse shapes can be explained by considering the aberration-retardation effects. The single sign circular polarization observed in many pulsars might be due to the relative orientation of sight line with respect to the particle trajectory plane.

Key words: pulsars general -- radiation mechanisms: non-thermal -- stars: rotation -- magnetic fields -- radio continuum: general

What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access. An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.

If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
You can define your own OpenURL resolver with your EDPS Account. In this case your choice will be given priority over that of your library.
You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.