Open Access Repository
Correlation Between X-Ray Light-Curve Shape and Radio Arrival Time in the Vela Pulsar
Downloads
Downloads per month over past year
![]() |
PDF
3745.pdf | Request a copy Full text restricted Available under University of Tasmania Standard License. |
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 Vela’s X-ray emission and
radio arrival times on a pulse-by-pulse basis. At a confidence level of 99.8% we have 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 second X-ray peak during radio pulses that arrive later. Our results suggest that the mechanism producing
the radio pulses is intimately connected to the mechanism producing X-rays. Current models using resonant absorption
of radio emission in the outer magnetosphere as a cause of the X-ray emission are explored as a possible explanation
for the correlation.
Item Type: | Article |
---|---|
Authors/Creators: | Lommen, AN and Donovan, J and Gwinn, C and Arzoumanian, Z and Harding, A and Strickman, M and Dodson, R and McCulloch, PM and Moffett, D |
Journal or Publication Title: | The Astrophysical Journal |
Publisher: | University of Chicago Press |
ISSN: | 0004-637X |
DOI / ID Number: | 10.1086/510797 |
Item Statistics: | View statistics for this item |
Actions (login required)
![]() |
Item Control Page |