Largest Radio Survey Maps 13.7M Cosmic Objects
The largest radio survey of the cosmos ever conducted has identified 13.7 million powerful cosmic objects and events, including black holes, supernovas, and merging galaxies. The survey provides an unprecedented catalog of dynamic cosmic processes, from stellar birth and death to galactic collisions. This massive dataset offers a detailed window into the universe's most energetic phenomena, creating a comprehensive map of cosmic activity across vast distances and time scales.
- This comprehensive map of the universe was created using the Low Frequency Array (LOFAR) telescope, which is the largest and most sensitive low-frequency radio telescope in the world. - The project, known as the LOFAR Two-metre Sky Survey (LoTSS-DR3), is the result of over a decade of observations and international collaboration between multiple European institutions. - The survey provides the most complete census to date of actively growing supermassive black holes, offering new insights into their evolution and interaction with their host galaxies. - By observing at low radio frequencies, the survey captures a view of the cosmos that is dramatically different from what is seen in visible light, revealing energetic phenomena like jets from black holes and intense star formation. - The massive dataset, totaling 18.6 petabytes, required more than 20 million core hours of computing time to process. - In addition to well-known cosmic events, the survey has also uncovered rare and faint objects, such as merging galaxy clusters and faint supernova remnants. - An upgraded version of the telescope, LOFAR2.0, is expected to double the survey speed and, combined with improved data processing, will allow for even more detailed studies of the radio universe. - The data from this survey is publicly available, providing a valuable resource for hundreds of new astronomical studies on topics ranging from cosmic magnetic fields to the formation of cosmic structures.
