Abstract Details
| Name: Sujata Mohanty Affiliation: CMR University Conference ID: ASI2017_1191 Title : Study of linear and non-linear cosmological bias of galaxies: Theory vs observations Authors and Co-Authors : Dr. Ramesh Mohan Thamankar CMR University Dr. Rajesh Gopal CMRIT Bangalore Abstract Type : Poster Abstract Category : General Relativity and Cosmology Abstract : In this universe 90% of the matter is dark matter which is not visible and 10% ofthe matter is baryonic matter which is visible . Baryonic matter includes all the galaxies that we we see today. But the evolution of large scale structure includes the underlying dark matter . Dark matter is only affected by gravitational field whereas the baryonic matter is affected by gravitational field, as well as radiation pressure , magnetic field etc. This difference leads to the study of bias factor called as cosmological bias. The field of research is open for the study of cosmological properties which is possible by the study of cosmological bias. It is the ratio of baryonic matter density to the dark matter density. The study of cosmological bias really an interesting topic to unfold many more mystery about the evolution of large scale structures. Cosmological bias provides a wide scope to learn the properties of underlying dark matter. So cosmological bias is a significant topic for study and research. In this paper i have formulated equations containing bias coefficients and calculated the same in quasi-linear regime when there is a transition of structure formation from linear to non-linear region. The same problem is also treated in the presence of magnetic field to get bias coefficients. That means the magnetic field can be one of the bias tracer element. |