(ORDO NEWS) — The galaxy SDSSJ0826+5630 sent out a signal with a wavelength of 21 cm. This is the first time that a radio signal of this type has been detected at such a distance.
Scientists have detected radio signals from a star-forming galaxy 9,000,000,000 light-years from Earth. The galaxy , designated SDSSJ0826 +5630, sent out a signal with a wavelength of 21 cm.
In fact, astronomers can look into the mysteries of the early universe, as this galaxy existed when the universe was only 4.9 billion years old.
Cosmologist and study co-author Arnab Chakraborty said “this is the equivalent of looking back in time 8.8 billion years.” This is the first time a radio signal of this type has been detected at such a great distance.
The astronomer also said: “The galaxy emits various kinds of radio signals.
Until now, it has only been possible to pick up this particular signal from a nearby galaxy, limiting our knowledge to those galaxies closer to Earth.”
The researchers were able to capture the signals using the Giant Metrowave Radio Telescope. A weak signal was detected at such a record distance thanks to gravitational lensing.
Study co-author Nirupam Roy said that “gravitational lensing amplifies the signal from a distant object to help us peer into the early universe.”
In this case, the signal was distorted by the presence of another galaxy, but this still allowed the telescope to pick it up.
The researchers used this signal to measure the gas composition of the distant galaxy from which it originated.
The researchers found that the atomic mass of the gaseous contents of this galaxy is almost twice the mass of stars visible to us.
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