Black Holes

Building on decades of effort, Lizhong Zhang, Member (2023–24) in the School of Natural Sciences; James Stone, Professor in the School; and a team of astrophysicists have achieved a major milestone: developing the most comprehensive model to date of luminous black hole accretion. Their breakthrough allows scholars to "observe" such black hole systems not through a telescope, but through a computer.

Frank and Peggy Taplin Member George N. Wong, Visitor Lia Medeiros, and Professor James Stone, all from the Institute's School of Natural Sciences, have developed an innovative technique to search for black hole light echoes. Their novel method, which will make it easier for the mass and the spin of black holes to be measured, represents a major step forward, since it operates independently of many of the other ways in which scientists have probed these parameters in the past.

A new image from the Event Horizon Telescope collaboration, which includes George Wong, Frank and Peggy Taplin Member in the School of Natural Sciences, has uncovered strong and organized magnetic fields spiraling from the edge of the supermassive black hole at the center of the Milky Way. 

This article from ACSR Discovery profiles computational work by James Stone, Professor in the School of Natural Sciences, and his colleagues, which has revealed details about how matter falling into black holes and the energy released from them impacts the evolution of the universe.

A pair of astronomers, including Itai Linial, Member (2022–23) in the School of Natural Sciences, "have discovered a handful of supermassive black holes that are associated with bursts of X-rays that recur every few hours or days." 

Scholars from the School of Natural Sciences brought together astrophysicists from across the world for a workshop focused on improving understanding of observations from the Event Horizon Telescope (EHT). The organizers also hosted an observing night for the IAS community, featuring a specially constructed radio telescope.

George Wong, Frank and Peggy Taplin Member in the School of Natural Sciences, and astrophysicists from Princeton University and Vanderbilt University have determined conclusively that energy close to the event horizon of M87’s central black hole is pushing outward, not inward—as one would normally assume with black holes.

New research published by Lev Arzamasskiy, current Member in the School of Natural Sciences, and his collaborators, which include past Member (1999–2001) and Visitor (2005) Eliot Quatert, has provided "invaluable" insights into the basic plasma physics that occurs in astrophysical systems.