Galaxy formation in lambda cold dark matter model

الملخص EN

The present work adapts the lambda cold dark matter Λ CDM model for simulating 106 dark matter and 106 gas particles to form galaxies inside a box of size (70Mpc / h)3.

The simulation is shown from high redshift z = 10 (1.2Gyr.) after the Big Bang to the low redshift z = 0 (13.4Gyr.) which represents the present day.

The position of the particles and the temperature-density relations were studied at each epoch.

It is found that the galaxies formation start at low redshift z = 5 and the gas cooled at 104 K.

The web construction of voids, filaments and clusters of galaxies were observed clearly at z = 0.

Sixteen processors of high performance supercomputer of Nottingham University-England were used in the simulation and the run took more than one day.