4-8 July 2016
Kramer Law building
Africa/Johannesburg timezone
Paper Review: Initial screening in progress
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Calibration of a statistical method used to constrain pulsar geometries via light curve modelling

Presented by Mr. Tiaan BEZUIDENHOUT on 6 Jul 2016 from 16:10 to 18:00
Type: Poster Presentation
Track: Track D1 - Astrophysics
Board #: D1.391

Abstract

Since its launch in 2008, the Fermi Large Area Telescope (LAT) has detected over 200 gamma-ray pulsars above 100 MeV. This population of pulsars is characterised by a rich diversity of light curve morphologies. Researchers have been using both the radio and gamma-ray light curves to constrain the inclination and observer angles of each of these pulsars. At first, this was done using an "eyeball" technique and later on via statistical approaches. We have also been developing a novel statistical approach that places the radio and gamma-ray data on equal footing despite their disparate flux errors. We chose a dozen pulsars from the Second Fermi Pulsar Catalog, both old and young, and applied this new technique as well as the "eyeball" technique to constrain their geometric parameters. We will present first results on our comparison of the best-fit parameters yielded by each of the aforementioned techniques. This will assist us in determining the utility of our new statistical approach, and gauge the overlap of the best-fit parameters (plus errors) from each of the different methods. This technique will provide the means for further pulsar magnetospheric model development using light curve data.

Award

Yes

Level

Hons

Supervisor

Prof C. Venter christo.venter@nwu.ac.za North-West University

Paper

Yes

Permission

Yes

Place

Location: Kramer Law building
Address: UCT Middle Campus Cape Town
Room:


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