Efficient Computation of Hyperspherical Bessel Functions

Details Efficient Computation of Hyperspherical Bessel Functions Efficient Computation of Hyperspherical Bessel Functions

1998-05-13

arxiv.org/abs/astro-ph/9805173v1

Astronomy and Astrophysics

Astrophysics

9 pages with 4 included figures. C code available on request

Scientific paper

Fast and accurate computations of the power spectrum of cosmic microwave background fluctuations are essential for comparing current and upcoming data sets with the large parameter space of viable cosmological models. The most efficient numerical algorithm for power spectrum calculation, recently implemented by Seljak and Zaldarriaga, involves integrating sources against spherical Bessel functions or, in the case of a non-flat universe, analogous hyperspherical Bessel functions. Evaluation of these special functions usually dominates the computation time in non-flat spatial geometries. This paper presents a highly accurate and very fast WKB approximation for computing hyperspherical Bessel functions which will greatly increase the speed of microwave background power spectrum computations in open and closed universes.

Affiliated with

Also associated with

No associations

Rating

Efficient Computation of Hyperspherical Bessel Functions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Efficient Computation of Hyperspherical Bessel Functions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Efficient Computation of Hyperspherical Bessel Functions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-52849