Speaker
Description
The removal of strong foreground contamination is one of the primary challenges for detecting the redshifted 21cm signal from the Epoch of Reionization (EoR). An end-to-end simulation that mimics a realistic astrophysical foreground, as well as the observational and instrumental effects, is necessary to develop and justify various pipelines of detection of the 21cm signal from EoR. In this work, we present an end-to-end simulation of SKA1-LOW observation at three separate frequency bands at 60-70 MHz, 110-120MHz, and 160-170 MHz, respectively, which has a pixel size of 5", a frequency resolution of 20kHz and an FoV of 100 square degrees. For astrophysical foregrounds, we consider the Galactic synchrotron and free-free emission, extragalactic AGN, and radio halo from galaxy clusters. The SKA1-LOW configuration with antenna response is implemented using the OSKAR software, and we also consider the antenna's thermal noise, gain and phase error, and interference from the ionosphere. The simulation will be helpful for the SKA user community, especially for developing and verifying the algorithm that detects the EoR signal from the actual observation.
| Presentation length | short |
|---|
