Astronomers measured the temperature of a Uranus ring, which was first named Epsilon. The result: the cluster of ice and rock is a 77 kelvin hammer.
The sky, our long-lasting electrically blue-colored ball of our solar system, is surrounded by 13 rings. They have been discovered recently since 1977 because of their fainting. In 2017, new images of the mysterious planet were captured by the Atacama Large Millimeter Array and the very large telescope, both in Chile, which highlighted the thermal energy, or lack thereof, in its rings.
A paper that will be published this month in the Astrophysical Journal (here is the free version of arXiv) describes a study of these images and concludes that Epsilon is a cool 77 Kelvin, about the same temperature as the boiling point of liquid nitrogen. The Uranus rings are divided into two sets, for what it is worth: an inner set of eleven and an outer pair. Epsilon is the outermost of the inner eleven.
A composite picture of the atmosphere of Heaven and rings on radio waves taken with the Atacama Large Millimeter Array. Epsilon is the bright ring you can see … Image credit: UC Berkeley image by Edward Molter and Imke de Pater
"The Saturn's main rings are broad, bright and have a range of particles of size, from small dust in the inner ring D to tens of meters in size in the main rings," said Imke de Pater, paper co-signer and professor of astronomy at the University of California, in Berkeley, USA. "The small end is missing on the main rings of Heaven, the brightest ring, epsilon, consists of golf courses and larger rocks."
Epsilon is also the widest ring, extending from 20 to 100 kilometers in width, compared to Saturn, tens of thousands of kilometers. Jupiter and Poseidon are also surrounded by particle perfumes. Jupiter consists of small, small particles, and Neptune is mainly dust.
The images do not quite explain where the material originates in the rings of Heaven. "We already know that the epsilon ring is a bit weird because we do not see the smallest things," said Edward Molter, the first author of the paper and a graduate student at UC Berkeley. "Something has wiped out the smallest things out, or we all ridicule together." We just do not know it. "This is a step towards understanding their composition and if all the rings come from the same original material or different for each ring.
It is believed that the rings can be made of pieces of material from asteroids, moon fragments or waste remaining from the creation of the Solar System 4.5 billion years ago, which are now captured by the gravity of Uranus. ®