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News: The CHIME telescope has made its first standalone detection of hydrogen’s faint glow from when the universe was about five billion years old.
About Canadian Hydrogen Intensity Mapping Experiment (CHIME) Telescope
- The Canadian Hydrogen Intensity Mapping Experiment (CHIME) is a radio telescope built in 2017.
- Location: It is located in British Columbia, Canada.
- Objective: It was built to map the distribution of hydrogen gas in the early universe and study cosmic expansion and dark energy.
- Working Mechanism:
- Radio-wave collection: Its four massive parabolic antennas collect radio waves in the 400–800 MHz range.
- Digital focusing: It has no moving parts.
- It uses digital signal processing to focus incoming radio signals and determine their direction.
- Data processing: A powerful correlator processes data at about 7 terabits per second.
- Sky coverage: As Earth rotates, the telescope receives radio signals from half of the sky.
- Key Features:
- Hydrogen mapping: It maps the combined radio glow of hydrogen to study its distribution and clustering.
- Independent observations: It can study dark energy using its own data without relying on other telescope results.
- Other capability: It can detect and study Fast Radio Bursts (FRBs) from distant galaxies.
