Abstract Details

Name: Hum Chand
Affiliation: Central University of Himachal Pradesh
Conference ID: ASI2021_512
Title : Probing the environment and central engine of AGN at different length scales
Authors and Co-Authors : Vineet Ojha (ARIES),Priyanka Jalan (ARIES), Sapna Mishra(ARIES), Vivek Kumar Jha (ARIES), R. Srianand (IUCAA), G. C. Devangan (IUCAA)
Abstract Type :
Abstract Category : Extragalactic Astronomy
Abstract : Various observational probes of the central engine and environment of AGN over a range of redshift play a key role in our understanding of the formation and evolution of proto-galaxy at high redshift. In this context, we will summarise our recent results of comparative studies of Narrow line Seyfert I (NLSY1) and Broad-line Seyfert I (BLSY1) using the X-ray/optical studies to constraint the emission mechanism of the central engine in the kpc scale. Further, we will summarise the environment of the AGN on kpc to Mpc scale using the analysis of Lyman alpha forest using a large sample of QSOs pairs (projected at <1.5 arcmin separation in 2-3 redshift). Finally, we will discuss our understanding of the typical AGNs outflow feedback detected as a blue-shifted broad absorption line (BAL, ~0.1c velocity) in AGN spectra, especially for the SDSS sample of a newly emergent BAL trough in BALQSOs.