|
|
Article: New findings in astrophysics described from Wayne State University.
- Article from:
- Physics Week
- Article date:
- November 10, 2009
CopyrightCOPYRIGHT 2009 NewsRX. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
|
According to a study from the United States, "We consider accretion of matter onto a low mass black hole surrounded by ionized medium."
"We show that, because of the higher mobility of protons than electrons, the black hole would acquire positive electric charge. If the black hole's mass is about or below 1020 g, the electric field at the horizon can reach the critical value which leads to vacuum instability and electron-positron pair production by the Schwinger mechanism," wrote C. Bambi and colleagues, Wayne State University.
The researchers concluded: "Since the positrons are ejected by the emergent electric field, while electrons are back-captured, ...