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Correlations between pulsed X-ray flux and radio arrival time in the Vela pulsar

2007/01/04 by A. N. Lommen, J. Donovan, Lommen, A. N. +23
Earth and Planetary Sciences · Engineering · Physics and Astronomy · #Astrophysics (astro-ph) #Earthquake Detection and Analysis #FOS: Physical sciences #Geophysics and Sensor Technology #Pulsars and Gravitational Waves Research #Seismic Waves and Analysis #astro-ph

paper · pdf · doi:10.48550/arxiv.astro-ph/0701103

Proceedings of the 363. WE-Heraeus Seminar on: Neutron Stars and Pulsars (Posters and contributed talks) Physikzentrum Bad Honnef, Germany, May.14-19, 2006, eds. W.Becker, H.H.Huang, MPE Report 291, pp.16-19

arxiv created 2007/01/04 · openalex publication_date 2007/01/04 · arxiv updated 2009/12/01 · openalex created_date 2019/06/27 · openalex updated_date 2026/07/28

Abstract

We report the results of simultaneous observations of the Vela pulsar in X-rays and radio from the RXTE satellite and the Mount Pleasant Radio Observatory in Tasmania. We sought correlations between the Vela's X-ray and radio flux densities and radio arrival times on a pulse by pulse basis. We found significantly higher flux density in Vela's main X-ray peak during radio pulses that arrived early. This excess flux shifts to the 'trough' following the 2nd X-ray peak during radio pulses that arrive later. We suggest that the mechanism producing the radio pulses is intimately connected to the mechanism producing X-rays. Current models using resonant absorption in the outer magnetosphere as a cause of the radio emission, and less directly of the X-ray emission, are explored as a possible explanation for the correlation.

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