7 papers
An Ultra-long Wavelength Sky Model with Absorption Effect
Yanping Cong, Bin Yue, Yidong Xu +3
The radio sky at frequencies below MHz is still largely unknown, this remains the last unexplored part of the electromagnetic spectrum in astronomy. The upcoming space exp…
The Tianlai Dish Pathfinder Array: design, operation and performance of a prototype transit radio interferometer
Fengquan Wu, Jixia Li, Shifan Zuo +34
The Tianlai Dish Pathfinder Array is a radio interferometer designed to test techniques for 21~cm intensity mapping in the post-reionization universe as a means for measuring large…
Design, operation and performance of the PAON4 prototype transit interferometer
R. Ansari, J. E Campagne, D. Charlet +14
PAON4 is an L-band (1250-1500 MHz) small interferometer operating in transit mode deployed at the Nançay observatory in France, designed as a prototype instrument for Intensity Map…
A high-resolution self-consistent whole sky foreground model
Qizhi Huang, Fengquan Wu, Xuelei Chen
The neutral hydrogen 21cm line is potentially a very powerful probe of the observable universe, and a number of on-going experiments are trying to detect it at cosmological distanc…
Progress in the Construction and Testing of the Tianlai Radio Interferometers
Santanu Das, Christopher J. Anderson, Reza Ansari +44
The Tianlai Pathfinder is designed to demonstrate the feasibility of using a wide field of view radio interferometers to map the density of neutral hydrogen in the Universe after t…
Extracting 21cm signal by frequency and angular filtering
Qizhi Huang, Fengquan Wu, Reza Ansari +1
Extracting the neutral hydrogen (HI) signal is a great challenge for cosmological 21cm experiments, both the astrophysical foregrounds and the receiver noise are typically several…