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Galactic Pulsar Population Generator (GPPG) ver. 1.0

This webpage is designed to provide a package of codes with those interested in the modeling of Galactic pulsar population as well as the selection effects of radio-pulsar surveys. In collaboration with Matthew Bailes, Paul Harrison and Rachel Dewey, a significant portion of the codes (mostly written in fortran77) was originally established by Duncan Lorimer, and has been used in several works including Lorimer et al. (1993) and Curran and Lorimer (1995). One of the most recent work using this code can be found in a paper by Kalogera et al. (2004). In this work, we revised the Galactic merger rate of double-neutron-star systems including the double-pulsar system (PSR J0737-3039). We note that we consider only those known pulsar binaries (NS-NS or NS-WD) in Galactic disk in this work.

The current version of GPPG has two features:

1. PSR GENERATOR (/gppg/modpop/)
reads an input data file (/gppg/data/psrpara.inp and /gppg/data/psrinfo.dat) and creates a data file (gppg.dat) containing a number of model pulsars based on the assumption on their spatial and luminosity distribution. User can assign the total number of samples (Npsr), i.e. how many model pulsars to be created and saved in the output data file.
2. SURVEY SIMULATOR (/gppg/surveys/)
reads a number of input data files including gppg.dat and returns a table of the number of pulsars detected (Ndet) for a given population size (Npop). The outcome is saved in /gppg/data/survey.res
One can freely modified both PSR GENERATOR and SURVEY SIMULATOR for their own purposes and use the codes separately. We will provide a source code to calculate a merger rate of a given psr population (hopefully) in the near future. As this project is on-going, we would appreciate any comments, requests, or bug-reports(!) to improve the functionality of the package.


How to Use GPPG?

Information for installation and usage can be found here

This webpage, and the provided codes are created as a part of the work done by Chunglee Kim, Vicky Kalogera and Dunc Lorimer between 2001-2004.

Questions and/or comments to
Chunglee Kim (e-mail: ckim at astro.cornell.edu)