EDP Sciences
Free Access
Volume 392, Number 2, September III 2002
Page(s) 757 - 771
Section Instruments, observational techniques and data processing
DOI https://doi.org/10.1051/0004-6361:20020930
Published online 30 August 2002

A&A 392, 757-771 (2002)
DOI: 10.1051/0004-6361:20020930

SNOC: A Monte-Carlo simulation package for high- z supernova observations

A. Goobar1, E. Mörtsell1, R. Amanullah1, M. Goliath2, L. Bergström1 and T. Dahlén3

1  Physics Department, Stockholm University, SCFAB, 106 91 Stockholm, Sweden
2  Swedish Defence Research Agency (FOI), 172 90 Stockholm, Sweden
3  Stockholm Observatory, SCFAB, 106 91 Stockholm, Sweden

(Received 15 April 2002 / Accepted 18 June 2002 )

We present a Monte-Carlo package for simulation of high-redshift supernova data, SNOC. Optical and near-infrared photons from supernovae are ray-traced over cosmological distances from the simulated host galaxy to the observer at Earth. The distances to the sources are calculated from user provided cosmological parameters in a Friedmann-Lemaître universe, allowing for arbitrary forms of "dark energy". The code takes into account gravitational interactions (lensing) and extinction by dust, both in the host galaxy and in the line-of-sight. The user can also choose to include exotic effects like a hypothetical attenuation due to photon-axion oscillations. SNOC is primarily useful for estimations of cosmological parameter uncertainties from studies of apparent brightness of type Ia supernovae vs redshift, with special emphasis on potential systematic effects. It can also be used to compute standard cosmological quantities like luminosity distance, lookback time and age of the universe in any Friedmann-Lemaître model with or without quintessence.

Key words: methods: numerical, data analysis, Cosmology: cosmological parameters

Offprint request: A. Goobar, ariel@physto.se

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