LOFAR: Astronomers Have a New Way to Bypass Earth's Atmosphere

Find out the latest thinking about our universe.
User avatar
AVAO
Commander
Posts: 624
Joined: Tue May 28, 2019 12:24 pm
AKA: multiwavelength traveller
Location: Zurich, Switzerland

LOFAR: Astronomers Have a New Way to Bypass Earth's Atmosphere

Post by AVAO » Sun Jun 09, 2024 6:30 pm

Astronomers Have a New Way to Bypass Earth's Atmosphere
universe today | 2024 June 04
Radio telescopes have an advantage over optical telescopes, in that radio telescope can be used even in cloudy conditions here on Earth. That’s because the longer wavelengths of radio waves can pass through clouds unhindered. However, some wavelengths are still partially obscured by portions of Earth’s atmosphere, especially by the ionosphere which traps human-made Radio Frequency Interference (RFI).

Astronomers have developed a new calibration technique that allows them to take sharp images in low radio frequencies — between 16 and 30 MHz — for the first time, bypassing the influence of the ionosphere. The astronomers say this will allow them to study things like plasmas emanating from ancient black holes and perhaps even detect exoplanets that orbit small stars.

The technique was developed by an international team of researchers led by astronomers from Leiden University in the Netherlands.

“It’s like putting on a pair of glasses for the first time and no longer seeing blurred,” said Christian Groeneveld from Leiden University, who led the research.
[...]

...more
TY4YA Jac