Solar Measurements for 21 Cm Wavelength Using 3 M Radio Telescope

Abstract

Solar hydrogen line emission has been observed at the frequency of 1.42 GHz (21 cm wavelength) with 3 m radio telescope installed inside the University of Baghdad campus. Several measurements related to the sun have been conducted and computed from the radio telescope spectrometer. These measurements cover the solar brightness temperature, antenna temperature, solar radio flux, and the antenna gain of the radio telescope. The results demonstrate that the maximum antenna temperature, solar brightness temperature, and solar flux density are found to be 970 K, 49600 K, and 70 SFU respectively. These results show perfect correlation with recent published studies.

Solar eclipse observations with small radio telescope in Hong Kong in 21cm radio frequency band

“…Besides, thanks to the advance in technology, sensitivity for the backend system had improved a lot so that two-dimensional mapping for the radio sun can easily be achieved. Recently, one of the interesting results was published by making use a UK made telescope at University of Baghdad (Jallod and Abood, 2019). However, the excellent results for the cm bands radio wave can be attributed to the extensive study from Goldstone Apple Valley Radio Telescope Observations (Velusamy et al, 2020).…”