Harp detail (IMAGE) Northwestern University Caption Close-up view of the harp-like structures. Magnetic filaments appear in pairs and clusters, side by side with equal spacing between them. Credit Farhad Yusef-Zadeh/Northwestern University Usage Restrictions Add credit License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.