Abstract Details

Name: Suraj Dhiwar
Affiliation: Savitribai Phule Pune University
Conference ID : ASI2023_679
Title : ASTROSAT detection of LyC emmiters in GOODS-North
Authors : Suraj Dhiwar and Kanak Saha
Mode of Presentation: Oral
Abstract Category : Extragalactic Astronomy
Abstract : One of the outstanding problems of current observational cosmology is to understand the nature of sources that produced the ionizing radiation after the Cosmic Dark Age. Due to the steep decline of intergalactic medium transmission, direct detection of these reionization sources is difficult at high redshift (z). The FUV band of the Ultraviolet Imaging Telescope (UVIT) onboard AstroSat with rest-frame Lyman limit of hydrogen at 912 Å from z ∼ 0.97, is ideally suited for such detections. Here we present the Lyman continuum (LyC) emitters detected at redshift z~1.2-1.6 in the Astrosat Ultradeep Deep Field North (AUDFn) using UVIT. These sources emitting extreme Ultraviolet radiation at a rest-frame wavelength of ~600 Å would be essential in constraining the shape of the ionization spectrum. We present the estimated escape fraction, ISM properties and SED models of the detected LyC emitters.