Speaker
Helene Laffon
(CENBG)
Description
The millisecond pulsar (MSP) luminosity distribution is useful to address e.g. contributions to the distribution of the diffuse positrons and gamma rays within our Galaxy. Gamma-ray luminosity versus spin-down power (Edot) is also a key observable to constrain emission models. The Shklovskii effect consists of an artificial increase of the apparent period derivative value (Pdot) over the intrinsic one due to the pulsar's transverse motion. Accounting for this effect can significantly change the Edot value in many cases: it depends on the MSP's distance and proper motion. In this contribution we will focus on the gamma-ray detection of four MSPs with the Fermi Large Area Telescope (LAT) and on parallax and proper motion measurements for an ensemble of gamma-ray MSPs using Nançay radio telescope data, that we use to compute the Shklovskii corrections and update the luminosity vs Edot relation, bringing new constraints on these pulsars' properties.
| Registration number following "ICRC2015-I/" | 962 |
|---|---|
| Collaboration | FERMI |
Primary author
Helene Laffon
(CENBG)
Co-authors
Dr
David A. Smith
(CENBG, IN2P3/CNRS)
Dr
Lucas Guillemot
(LPC2E, CNRS/INSU)
