Statistical tests of distribution of perihelion points of long-period comets

Details Statistical tests of distribution of perihelion points of long-period comets Statistical tests of distribution of perihelion points of long-period comets

Oct 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979mnras.189...45y&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 189, Oct. 1979, p. 45-56.

Astronomy and Astrophysics

Astronomy

12

Comets, Perihelions, Statistical Distributions, Statistical Tests, Apexes, Hemispheres, Monte Carlo Method, Random Processes, Solar Rotation

Scientific paper

Modification of Fisher's method (1953) of testing a hypothesis on a distribution of points on a sphere to determine whether the perihelion points are uniformly randomly distributed in each hemisphere is presented. Since comets with perihelia in the north of the ecliptic are more likely to be discovered than those in the south, the distributions of perihelion points in the north and south of the ecliptic should be separately investigated to determine if they can be considered as samples taken from a population with uniform distribution in each hemisphere. It is shown that: (1) when comets are taken as a whole, the null-hypothesis of uniform distribution can be rejected, and (2) when comets are classified according to their perihelion distances (q), the null-hypothesis of uniform distribution cannot be rejected only for comets q greater than 1 AU and beta (ecliptic latitude of perihilion) greater than O. In addition, statistical tests are made regarding the null-hypothesis that the preferred direction of perihelion distribution is close to the solar motion apex by randomly choosing the same number of comets with positive beta as the number with negative beta. It is concluded that the perihelion points of absolutely bright comets are strongly distributed in the direction of the solar apex.

Affiliated with

Also associated with

No associations

Rating

Statistical tests of distribution of perihelion points of long-period comets 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 Statistical tests of distribution of perihelion points of long-period comets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Statistical tests of distribution of perihelion points of long-period comets will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1388366