Julia M. Riley facts for kids
Julia M. Riley is a British scientist who studies space, known as an astrophysicist. She helped create a way to sort different types of objects in space called the Fanaroff–Riley classification.
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About Julia Riley
Julia M. Riley was born in 1947. Her father, Maurice Hill, was also a scientist who studied the Earth's oceans. Her grandfather, Archibald Vivian Hill, won a Nobel Prize for his work in how the body works.
Dr. Riley is a special member, called a Fellow, at Girton College at the University of Cambridge. She works with the Cavendish Astrophysics Group there. Her main area of study is radio astronomy. This is a way of looking at space using radio waves instead of light. She also teaches physics to students at the University of Cambridge.
How She Classified Radio Galaxies
In 1974, Dr. Riley worked with another scientist named Bernard Fanaroff. They wrote an important paper together. In this paper, they sorted radio galaxies into two main groups. Radio galaxies are huge galaxies that give off strong radio waves.
Their way of sorting these galaxies was based on their shape. This system became known as the Fanaroff–Riley type I and II (FRI and FRII).
Fanaroff–Riley Type I (FRI)
In FRI galaxies, most of the radio waves come from close to the center of the galaxy. Imagine a bright light that is strongest right in the middle.
Fanaroff–Riley Type II (FRII)
In FRII galaxies, most of the radio waves come from bright spots far away from the center. These bright spots are like two glowing areas on either side of the galaxy.
External links
- Webpage at Girton College
- Webpage at Cavendish Astrophysics Group
See also
In Spanish: Julia Riley para niños
