A Long Period Horizontal Pendulum

A Long Gestation Period

Long Period Exoplanets

Recent imaging campaigns indicate the possible existence of massive planets on ∼> 1000 year orbits about a few percent of normal stars. Such objects are not easily explained in most current planet formation models. In this Letter we use a large ensemble of N-body simulations to evaluate the potential for planet scattering during relaxation of dynamically active systems to explain very long peri...

Long Period Fibre Gratings

Evidence for a Long - period Planet

High precision radial velocity (RV) measurements spanning the years 1980.8–2000.0 are presented for the nearby (3.22 pc) K2 V star ǫ Eri. These data, which represent a combination of six independent data sets taken with four different telescopes, show convincing variations with a period of ≈ 7 yrs. A least squares orbital solution using robust estimation yields orbital parameters of period, P =...

Amyotrophic lateral sclerosis: a long preclinical period?

The onset of amyotrophic lateral sclerosis (ALS) is conventionally considered as commencing with the recognition of clinical symptoms. We propose that, in common with other neurodegenerations, the pathogenic mechanisms culminating in ALS phenotypes begin much earlier in life. Animal models of genetically determined ALS exhibit pathological abnormalities long predating clinical deficits. The ove...