Abstract Details
| Name: Saumyadip Samui Affiliation: Presidency University, Kolkata Conference ID: ASI2018_1677 Title : Cosmic Ray driven outflows from high-z galaxies Authors and Co-Authors : Kandaswamy Subramanian (IUCAA), Raghunathan Srianand (IUCAA) Abstract Type : Invited Abstract Category : Extragalactic astronomy Abstract : Galactic scale outflows are ubiquitous to all star forming galaxies, locally as well as in high redshifts. It is believed that such outflows are responsible for spreading of metals in the intergalactic medium. Here, we present a semi-analytical model of galactic outflows from high redshift galaxies. Both hot gas and cosmic rays generated by supernova are considered in driving the outflow. The presence of cosmic rays makes outflow to escape galactic potential much easily even if the thermal gas loses its energy via radiative cooling. We show that these cosmic ray driven outflows also spread magnetic fields along with the metals in a significant volume of the universe. Further, such outflows have considerable influence on the thermal history of the inter galactic medium. |