(meteorobs) Deficit of southern meteor streams apparently confirmed

[Chris Peterson]

The first question to ask is if it is, indeed, significant, where that 
term is rigorously defined statistically. In fact, the imbalance between 
northern and southern streams may be within reasonable error bars given 
the number of total streams.

If the imbalance is found to be statistically significant, I'd look for 
some association between outer planet resonances and the inclinations of 
Earth and the outer planets with respect to the invariable plane. It's 
almost certainly something that would require numerical modeling to study.

Chris

*******************************
Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com

On 3/22/2014 3:30 AM, dfischer at astro.uni-bonn.de wrote:
> I'm at the annual meeting of the German meteor society -
> http://meteoros.de/akm/seminar14/index.html - right now, and this morning
> we learned about a new analysis of international video data that seems to
> confirm with hard numbers that there is a significant deficit of radiants
> in the southern sky: as you can see in S. Molau's summary slide
> https://twitter.com/cosmos4u/status/447289852493434880/photo/1/large over
> 1/2 of all streams are located north of +30°N. Has this significant
> hemispheric asymmetry also shown up in other data sets (e.g. radar) - and
> if it's real: what could be the explanation?
>
> Daniel Fischer in Dessau