Orpington Astronomical Society

Astronomy => In the Media... => Topic started by: mickw on Sep 16, 2009, 14:27:26

Title: Comet Outburst Spawns Mini-Comets
Post by: mickw on Sep 16, 2009, 14:27:26
A comet recently spewed out a cluster of mini comets in a huge outburst that was the largest ever witnessed by astronomers.

A team of researchers began observing the comet 17P/Holmes in October 2007, after it was reported that the object, about 2.2 miles wide (3.6 km wide), had brightened by a million times in less than a day.

UCLA researcher Rachel Stevenson and colleagues noted multiple fragments flying rapidly away from the comet's nucleus. They continued observing for several weeks after the outburst using the Canada-France-Hawaii Telescope in Hawaii and watched as the dust cloud ejected by the comet grew to be larger than the sun.

More:   http://www.space.com/scienceastronomy/090915-mini-comets.html (http://www.space.com/scienceastronomy/090915-mini-comets.html)
Title: Re: Comet Outburst Spawns Mini-Comets
Post by: MarkS on Sep 16, 2009, 17:30:05
Interesting.

I wonder if the individual jets in this digitally enhanced image of mine are due to those fragments?

(http://www.markshelley.co.uk/Astronomy/holmes_jets_20071031.jpg)

If I go back to my original data and apply a Laplacian filter instead of a rotational one I might be able to tease out better detail.

(From the 0.3 meter, Shelley back garden telescope!)

Mark
Title: Re: Comet Outburst Spawns Mini-Comets
Post by: Ian on Sep 16, 2009, 18:04:45
and applying the "Unbelieveable luck of the Shelley" filter too...  :D
Title: Re: Comet Outburst Spawns Mini-Comets
Post by: MarkS on Sep 16, 2009, 19:41:21
Quote from: Ian
and applying the "Unbelieveable luck of the Shelley" filter too...  :D

Indeed - I was fortunate enough to buy the C11 just one week before the Holmes outburst.

Mark
Title: Re: Comet Outburst Spawns Mini-Comets
Post by: Ian on Sep 16, 2009, 20:15:52
see, I knew it :)
Title: Re: Comet Outburst Spawns Mini-Comets
Post by: mickw on Sep 16, 2009, 20:34:48
I don't beleive it ...............................

"Shakes head in disbelief"   :roll:
Title: Re: Comet Outburst Spawns Mini-Comets
Post by: Tony G on Sep 16, 2009, 23:00:33
Quote from: Tony G on Sep 07, 2009, 21:39:51
'I just happened to have my camera with me (with my new C11), when...................'  ;)

Tony G

Deja Vu   :roll:  ;)

Tony G
Title: Re: Comet Outburst Spawns Mini-Comets
Post by: Mac on Sep 16, 2009, 23:54:03
Considering the amount of lady luck you seem to have acquired

could you pick the numbers for fridays euro lottery please.

Cheers. ;)