New Findings on Cosmic Jets from Black Hole M87

Researchers utilized “significantly enhanced viewing coverage” from the Event Horizon Telescope to follow a cosmic jet stretching 3,000 light-years from the first black hole ever captured in an image. This information was shared in a recent study published this week.

The study, released on Wednesday in Astronomy & Astrophysics, sheds light on the origin and mechanics behind the massive jets that black holes emit, which can travel at nearly the speed of light.

M87, located about 55 million light-years away from Earth in the Messier 87 galaxy, harbors a supermassive black hole that is approximately 6.5 billion times the mass of our Sun. The initial images of M87 were made public in 2019, following data collection by the Event Horizon Telescope in 2017.

Dr. Paddy Boyd from NASA discussed in a video that the black hole is not just large, but also “active.” He notes that only a small fraction of black holes are active at any point. “Does it turn on or off? That’s the idea,” Boyd explained. He emphasized that when jets are fired, there’s a significant magnetic field involved. This captures observational evidence that what researchers have seen corresponds to jets linked to the supermassive black hole at M87’s core.

According to contributions from Scientific American and Space.com, M87 draws in gas and dust from its surroundings and ejects a powerful jet of charged particles from its poles, resulting in a jet stream.

Saurabh, the lead of the team at the Max Planck Institute for Radio Astronomy, indicated that this research marks an early step in connecting theoretical principles of jet launches to tangible observations. He remarked, “Identifying the jet’s source and its relationship with the black hole’s shadow is a crucial piece of the puzzle, providing deeper insight into how the central engine works.”

The Event Horizon Telescope is an extensive network of eight radio observatories worldwide that can detect radio waves emitted from celestial objects like galaxies and black holes, effectively operating as a telescope the size of Earth.

Additionally, the National Science Foundation notes that the event horizon defines the boundary of a black hole where light can no longer escape.

The data used for these findings was gathered during the 2021 Event Horizon Telescope observations. However, the study’s authors mentioned, “While this result holds under the conditions we’ve assessed, forthcoming EHT observations with greater sensitivity and improved mid-baseline coverage will be essential for final validation and more precise results.”