Radio Signals tagged posts

Are Nearby Planets Sending Radio Signals to Each Other?

Illustration of star with two orbiting planets communicating with radio signals
Illustration showing communication between planets beyond our solar system looking from the perspective of Earth. New research using the Allen Telescope Array looked for this type of communication, similar to communication between Earth and our rovers on Mars, in the TRAPPIST-1 star system. Credit: Zayna Sheikh

Researchers have developed a new method using the Allen Telescope Array to search for interplanetary radio communication in the TRAPPIST-1 star system.

A new technique allows astronomers to home in on planets beyond our solar system that are in line with each other and with Earth to search for radio signals similar, for example, to ones used to communicate with the rovers on Mars...

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Hidden Supermassive Black Holes reveal their Secrets through Radio Signals

An artist’s impression of a red quasar. Red quasars are enshrouded by gas and dust, which may get blown away by outflows from the supermassive black hole, eventually revealing a typical blue quasar.
Credit: S. Munro & L. Klindt
Licence: Attribution (CC BY 4.0)
I think this is the strongest evidence so far that red quasars are a key element in how galaxies evolve
Dr Victoria Fawcett

Astronomers have found a striking link between the amount of dust surrounding a supermassive black hole and the strength of the radio emission produced in extremely bright galaxies. The findings are published in the Monthly Notices of the Royal Astronomical Society.

The team of international astronomers, led by Newcastle University and Durham University, UK, used new data from the Dark Energy Spectroscopic Instrument (DESI), which is conducting a five year survey of large scale structure in the universe that will include optical spectra for ~3 million quasars; extremely bright galaxies powered by supermassive black holes...

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Penetrating Radar Aboard the Chang’E-4 Rover Reveals Layers of the Moon’s History

Penetrating radar aboard the Chang'E-4 rover reveals layers of the moon's history
Image taken by the panoramic camera (PCAM) on board the Chinese Yutu 2 lunar rover as it looked back at the Chang’e 4 lander. Credit: Nature Communications (2019). DOI: 10.1038/s41467-019-12278-3/Wikimedia Commons/CC BY-SA

A team of space scientists at the Planetary Science Institute, working with colleagues from the Chinese Academy of Sciences, Shenzhen University and the University of Aberdeen, has used data from China’s Chang’E-4 rover to learn more about the history of the moon. In their study, reported in the Journal of Geophysical Research: Planets, the group analyzed lunar-penetrating radar (LPR) data sent back from the rover.

China’s Chang’E-4 rover has been wandering around on the far side of the moon since 2018...

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Radio Signals from Distant Stars Suggest Hidden Planets

Using the world’s most powerful radio antenna, scientists have discovered stars unexpectedly blasting out radio waves, possibly indicating the existence of hidden planets.

The University of Queensland’s Dr Benjamin Pope and colleagues at the Dutch national observatory ASTRON have been searching for planets using the world’s most powerful radio telescope Low Frequency Array (LOFAR) situated in the Netherlands.

“We’ve discovered signals from 19 distant red dwarf stars, four of which are best explained by the existence of planets orbiting them,” Dr Pope said.

“We’ve long known that the planets of our own solar system emit powerful radio waves as their magnetic fields interact with the solar wind, but radio signals from planets outside our solar system had yet to be picked up.

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