SIMBAD references

2018MNRAS.481.3966B - Mon. Not. R. Astron. Soc., 481, 3966-3987 (2018/December-2)

Bayesian model comparison and analysis of the Galactic disc population of gamma-ray millisecond pulsars.

BARTELS R.T., EDWARDS T.D.P. and WENIGER C.

Abstract (from CDS):

Pulsed emission from almost one hundred millisecond pulsars (MSPs) has been detected in γ-rays by the Fermi Large-Area Telescope. The global properties of this population remain relatively unconstrained despite many attempts to model their spatial and luminosity distributions. We perform here a self-consistent Bayesian analysis of both the spatial distribution and luminosity function simultaneously. Distance uncertainties, arising from errors in the parallax measurement or Galactic electron-density model, are marginalized over. We provide a public PYTHON package (available from http://github.com/tedwards2412/MSPDist) for calculating distance uncertainties to pulsars derived using the dispersion measure by accounting for the uncertainties in Galactic electron-density model YMW16. Finally, we use multiple parametrizations for the MSP population and perform Bayesian model comparison, finding that a broken power-law luminosity function with Lorimer spatial profile are preferred over multiple other parametrizations used in the past. The best-fitting spatial distribution and number of γ-ray MSPs is consistent with results for the radio population of MSPs.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): pulsars: general - Galaxy: disc - gamma-rays: general

Simbad objects: 154

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2019.10.19-05:28:08

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