|5th of December 2015|
|Antennas, the Universe and Everything|
|by Aaron Chippendale (CASS)|
Antennas and the Universe |
The main graphic shows a first-pass map of the radio sky at 70.625 MHz, which is dominated by our Galaxy. We made this map using the 64 m Parkes Radio Telescope and a new, prototype, self-calibrating receiver. Alex Dunning (CASS) and Keith Bannister (CASS) are leading the development of this new receiver at CSIRO for precision measurements of the red-shifted 21 cm line of neutral hydrogen during the earliest epochs of star and galaxy formation in the first billion years after the Big Bang. The new receiver is unique in that it automatically calibrates away the noise contributions of the LNA, including the component that leaks out the input of the receiver, bounces off the antenna, and then re-enters the receiver.
Antennas and Everything
The smaller images along the top demonstrate antenna applications that affect every-day life and have significant overlap with the tools and techniques of radio astronomy.
Image Credits: Parkes Radio Telescope (CSIRO), Breast Imaging System (Technical University of Denmark), and Bullet Train (Alok Mishra [Public domain], via Wikimedia Commons).
Aaron Chippendale presented this work at the 2015 Bolton & Student Symposium.