15–20 Oct 2017
Congress Center Garmisch-Partenkirchen
Europe/Berlin timezone
The proceedings of the 7th Fermi Symposium are available at https://pos.sissa.it/312/

Blind Search Methods for Binary Gamma-ray Pulsars

Not scheduled
15m
GaPa/2-1 - Konzertsaal (Garmisch-Partenkirchen)

GaPa/2-1 - Konzertsaal

Garmisch-Partenkirchen

300
Poster Pulsars Pulsars

Speaker

Lars Nieder

Description

Gamma-ray observations by the Fermi Large Area Telescope have been used very successfully in the last 9 years to detect more than 200 gamma-ray pulsars. 60 of these have been found by directly searching for pulsations in the gamma-ray data, but only one binary MSP has been found this way. Pulsars in binaries are often difficult to detect in radio data because of large eclipses, and some binary MSPs may even be radio quiet. For those, a gamma-ray blind search might be the only possibility for detection. While searches for isolated pulsars up to kilohertz frequencies are already computationally very challenging, blind searches for binary gamma-ray pulsars are simply infeasible without further knowledge of their orbital parameters. I will present methods with which we can conduct searches for candidate binary gamma-ray pulsars for which orbital constraints are known from optical observations of a likely companion star. I will also highlight some example sources where these methods have been used. Additionally, some redback MSPs can be more easily timed in gamma rays than with radio observations; I will also explain how these new methods can be used to do so.

Primary author

Lars Nieder

Co-author

Colin Clark (Max Planck Institute for Gravitational Physics (Albert Einstein Institute), Hannover)

Presentation materials

Peer reviewing

Paper