Modeling and maximum likelihood fitting of gamma-ray and radio light curves of millisecond pulsars detected with Fermi
Abstract
Pulsed gamma rays have been detected with the Fermi Large Area Telescope (LAT) from more than 20 millisecond pulsars (:\ISPs), some of which were discovered in radio observations of bright, unassociated LAT sources.
We have fit the radio and gamma-ray light curves of 19 LAT-detected MSPs in the context of geometric, outermagnetospheric emission models assuming the retarded vacuum dipole magnetic field using a Markov chain
Monte Carlo maximum likelihood technique. We find that, in many cases, the models are able to reproduce the
observed light curves well and provide constraints on the viewing geometries that are in agreement with those
from radio polarization measurements. Additionally, for some MSPs we constrain the altitudes of both the
gamma-ray and radio emission regions. The best-fit magnetic inclination angles are found to cover a broader
range than those of non-recycled gamma-ray pulsars
URI
http://hdl.handle.net/10394/32145http://www.slac.stanford.edu/econf/C110509/Fermi_proc.pdf
https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20120009377.pdf