Non-linear Power spectrum

From:
http://adsabs.harvard.edu/abs/2000ApJ...543..503M

Particle resonances

From http://www.science20.com/quantum_diaries_survivor/blog/atlas_vs_cms_dimuon_resonances-75594.

"Show the invariant mass distirbution of pairs of opposite-sign muons collected by the ATLAS and CMS experiment"

CMS figure:

ATLAS figure:

Pulsar Timing Sensitivities to Gravitation Waves from Relativistic Metric Theory of Gravity

From this paper.

Secondary CMB powerspecrum measured SPT

Bow shock

Destruction of solar system by an alien star

A simple planet motion simulation I did for a project in one of the undergraduate course.
I studied what happens to the planets if a solar mass object swing by the Sun closely.

I will explain the details at the journal club meeting.

Do we need extra radiation?

A theory of extra radiation in the Universe

Kazunori Nakayamaa, Fuminobu Takahashib and Tsutomu T. Yanagidab


Abstract
Recent cosmological observations, such as the measurement of the primordial
4He abundance, CMB, and large scale structure, give preference to the existence of extra radiation component. The extra radiation may be accounted for
by particles which were in thermal equilibrium and decoupled before the big bangnucleosynthesis. Broadly speaking, there are two possibilities: 1) there are about 10 particles which have very weak couplings to the standard model particles and decoupled much before the QCD phase transition; 2) there is one or a few light particles with a reasonably strong coupling to the plasma and it decouples after the QCD phase transition.