This week we started in a not too positive note discussing some budget data.
We followed talking about a detector that has been searching
for dark matter particles in the form of WIMPS (Weakly Interacting
Massive Particles). It looks for nuclei recoils due to weak
interactions of the unknown particles with a cryogenically isolated
target, while rejecting events due to cosmic rays (especially muons
created in the upper atmosphere). To date, they have seen 67
candidate events, which represents a 4-sigma signal above the
expected noise background. (At 5 sigma, it will likely be announced
as an official dark matter discovery.) The BBC news item (which appeared Sep. 06): http://www.bbc.co.uk/news/science-environment-14811580 ... and the ArXiv ariticle (Sep. 03): http://arxiv.org/abs/1109.0702
for dark matter particles in the form of WIMPS (Weakly Interacting
Massive Particles). It looks for nuclei recoils due to weak
interactions of the unknown particles with a cryogenically isolated
target, while rejecting events due to cosmic rays (especially muons
created in the upper atmosphere). To date, they have seen 67
candidate events, which represents a 4-sigma signal above the
expected noise background. (At 5 sigma, it will likely be announced
as an official dark matter discovery.) The BBC news item (which appeared Sep. 06): http://www.bbc.co.uk/news/science-environment-14811580 ... and the ArXiv ariticle (Sep. 03): http://arxiv.org/abs/1109.0702
Also talked about SN2011fe
And last but not least we talked about the so called diamond-planet, oh really?
We left for future discussion this piece of news about a star that shouldn't exist
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