Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
2022 March 30
Credits: Illustration: Sam Moorfield; Data: CSIRO, HST (HUDF), ESA, NASA;
Image: J. English (U. Manitoba), EMU, MeerKAT, DES (CTIO); Text: Jayanne English
What is a Cosmic Puzzle that no one expected to see? Odd Radio Circle is also known as ORCs. The ORC-1 is one of the five objects that were discovered using the new Australia n SKA Pathfinder radio array. The data from the South Africa n MeerKAT array is used in the final image in the video. The radio data is combined with a Dark Energy Survey map. An illustration by an artist explores one idea about the origins of the ORC. If two black holes collide in the center of a galaxy, they could create a ring of radio radiation. These grow to fill the frame. The expansion of the ORC can be tracked until it is a million light-year s across. The Square Kilometer Array can help test this and other promising scenarios.
Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
NASA Official: Phillip Newman Specific rights apply.
A service of: ASD at NASA / GSFC
Michigan Tech. U.