2023 RTP round - Impact of of calibration sky models on EoR angular power spectrum
Applications open: 8/07/2022
Applications close: 18/08/2022
About this scholarship
"The Murchison Widefield Array (MWA) is a radio telescope, located at the Murchison Radio-astronomy Observatory in the mid-west of Western Australia which is considered ideal for its low-level radio frequency interference. The instrument serves as a precursor for Low-Frequency Square Kilometre Array. The first construction phase of the MWA, commonly known as Phase I, consists of 128 tiles. Each tile is made up of 4x4 dual polarised dipoles. These tiles are optimised to operate between 70-300 MHz. Phase I of the MWA was among the first-generation radio interferometers focused on the detection of the Epoch of Reionisation (EoR) and it was designed as a general-purpose array to improve both the imaging capabilities and sensitivity on angular power spectrum scales. The EoR is the period when the Universe went from being completely neutral to an ionised one. Phase II of the MWA was designed through lessons learnt from MWA Phase I and other experiments dedicated toward the EoR, which is an update of 56 new tiles beyond the circumference of the existing ones.
Observations of the EoR using the 21 hydrogen lines are challenged by strong Galactic and extra-Galactic foregrounds that are a few orders of magnitude higher than the desired 21 cm signal. Precise calibration is one of fundamental keys to separation of these bright foregrounds from the desired 21 cm signal. MWA uses a Real Time and Imaging System (RTS) for data reduction and calibration. An improved version of the RTS is currently being developed by the MWA Team, known as Hyperdrive . The objectives of the project are (1) to calibrate Phase I/Phase II data using hyperdrive and compare with RTS; (2) To estimate a lower bound for point sources in our calibration models beyond which negligible difference is observed in the EoR angular power spectrum; (3) to derive (if any) a relationship between array layout and flux density threshold in our sky models; (4) to estimate any instrumental leakage in the EoR power spectrum caused by using incomplete sky models for calibration."
An Internship opportunity may also be available with this project.
- Future Students
Faculty of Science & Engineering
- Science courses
- Engineering courses
- Higher Degree by Research
- Australian Citizen
- Australian Permanent Resident
- New Zealand Citizen
- Permanent Humanitarian Visa
- Merit Based
The annual scholarship package (stipend and tuition fees) is approx. $60,000 - $70,000 p.a.
Successful HDR applicants for admission will receive a 100% fee offset for up to 4 years, stipend scholarships, valued at approx. $28,800 p.a. for up to a maximum of 3.5 years, are determined via a competitive selection process.
For detailed information, visit: Research Training Program (RTP) Scholarships | Curtin University, Perth, Australia.
All applicable HDR courses
This project will suit a student with a broad interest in radio astronomy. They will benefit from a sound understanding of the basic cosmology, and workings of a radio telescope. A background in computing would be highly-beneficial.
If this project excites you, and your research skills and experience are a good fit for this specific project, you should contact the Project Lead (listed below in the enquires section) via the Expression of Interest (EOI) form.
Eligible to enrol in a Higher Degree by Research Course at Curtin University by March 2023
To enquire about this project opportunity that includes a scholarship application, contact the Project lead, Dr Ridhima Nunhokee via the EOI form above.