EDP Sciences
Free access
Volume 433, Number 2, April II 2005
Page(s) 713 - 715
Section The Sun
DOI http://dx.doi.org/10.1051/0004-6361:20042508

A&A 433, 713-715 (2005)
DOI: 10.1051/0004-6361:20042508

Research Note

Monte Carlo simulation of solar p-mode profiles revisited: Bias and uncertainty estimation from one, not many, fits

T. Toutain1, 2, Y. Elsworth1 and W. J. Chaplin1

1  School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
    e-mail: [ype;wjc]@bison.ph.bham.ac.uk
2  Institute of Theoretical Astrophysics, University of Oslo, PO Box 1029 Blindern, 0315 Oslo, Norway
    e-mail: tierry.toutain@astro.uio.no

(Received 9 December 2004 / Accepted 19 January 2005 )

It is quite common in helioseismology to use extensive Monte Carlo simulations to investigate the bias and associated uncertainties in fitted p-mode parameters. This can, however, be very time-intensive if the fitting problem is complicated or large datasets (in time or resolution) are involved. Here, we show that it is often possible to reduce significantly the task by taking advantage of the statistical properties of the p-mode profiles.

Key words: methods: data analysis -- methods: statistical -- Sun: helioseismology

© ESO 2005